{"key":"grow","title":"Robots that grow food","kanji":"農","one_line":"Sunlight grows calories, LEDs grow greens, robots move trays and scout at night; humans still pick fruit.","thesis":"Fully automated food production is not a robot arm in a field; it is intralogistics plus a crop twin: plants on standard carriers move past fixed stations, a model-predictive controller sets climate and light, and robots do the night work of UV-C dosing and scouting. Physics sets the boundary: LED efficacy is already near its 3.4-4.1 umol/J ceiling, so lettuce costs about 7-11 kWh/kg in light alone and a full human diet under LEDs would need over 100 kWh per person per day. The non-obvious insight from more than $2.3B of failed or distressed indoor-farm and ag-robot capital is that the failures were capital-structure and crop-choice failures, while the control problem is essentially solved (AI beat growers at Wageningen) and harvesting is the true unsolved robot task. For ORIJO this means daylight vaults for calories and fruit, LED cassettes only for greens, a jo-grid coordinate system that makes every plant legible to cheap fixed machines, and sale as equipment rather than as a farming business.","subsystems":[{"id":"GROW-S1","name":"Photon supply: daylight first, LED top-up","function":"Deliver the daily light integral (DLI, mol/m2/day) each crop needs at the lowest kWh and capex per mol.","how_it_works":"Photosynthesis is driven by photon count (400-700 nm), so a light recipe is a DLI target = PPFD (umol/m2/s) x photoperiod (s) / 1e6. Electric lighting energy per m2 is DLI / photosynthetic photon efficacy (PPE, umol/J): at DLI 15 and 3.0 umol/J a lettuce tier needs about 1.4 kWh/m2/day, or about 7-11 kWh per kg of lettuce at 48-70 kg/m2/yr, before HVAC. Physics caps the gain from better LEDs: the best fixtures reach about 3 umol/J and the practical ceiling is about 3.4 (white+red) to 4.1 (blue+red) umol/J, so the remaining lever is yield per photon (canopy capture, far-red, harvest index) and using free sunlight. Greenhouses buy far less electricity per kg than plant factories because the sun supplies the photons; plant factories win on water, CO2 and land, not on purchased energy.","options":[{"name":"Sole-source LED tiers (plant factory / PFAL)","principle":"Multi-tier racks under LED at fixed DLI; sealed climate","maturity":"COMMERCIAL","trl":9,"trl_why":"Spread, AeroFarms and others have operated at commercial scale for years; the business model, not the light, failed in most cases.","key_numbers":[{"label":"Best independently tested LED fixture efficacy","value":"about 3.0 (blue+red); 2.5-2.8 (white+red)","unit":"umol/J","basis":"measured","sources":["src-kusuma2020"]},{"label":"Practical efficacy limit with current LED technology","value":"3.4 (white+red); 4.1 (blue+red)","unit":"umol/J","basis":"calculated","sources":["src-kusuma2020"]},{"label":"Purchased electricity, lettuce, plant factory","value":247,"unit":"kWh_e per kg dry weight","basis":"calculated","sources":["src-graamans2018"]},{"label":"Lighting electricity per kg lettuce at DLI 15, 3.0 umol/J, 48-70 kg/m2/yr","value":"7.2-10.6","unit":"kWh/kg fresh","basis":"calculated","sources":["src-kusuma2020","src-anyground-v3"]}],"best_for":["E1 rooftop","E3 desert (sealed, water-saving)","E4 arctic winter","E8 lunar"],"limits":"Purchased energy per kg is 1.2-3.5x a greenhouse's; only economic for short-cycle, high-value, perishable crops (greens, herbs, strawberries)."},{"name":"Daylight greenhouse/vault with LED supplement","principle":"Glazed YOSHI-6G/greenhouse collects solar photons; LEDs fill the DLI gap in winter","maturity":"COMMERCIAL","trl":9,"trl_why":"Dutch glasshouse horticulture is the mature global benchmark; the AGC compartments are standard Venlo greenhouses.","key_numbers":[{"label":"Purchased electricity, lettuce greenhouse, Netherlands / UAE / Sweden","value":"70 / 111 / 182-211","unit":"kWh_e per kg dry weight","basis":"calculated","sources":["src-graamans2018"]},{"label":"Electricity per kg cucumber, AI-controlled greenhouse (winner Sonoma) vs growers","value":"3.59 vs 3.02","unit":"kWh/kg","basis":"measured","sources":["src-hemming2019"]}],"best_for":["E2 forest clearing","E5 mountain","E6 coast","E7 steppe"],"limits":"Weather-coupled yield; heating load at high latitude; glazing adds mass and cleaning tasks."},{"name":"Sealed space-analog chamber (EDEN ISS / APH class)","principle":"Closed volume, LED, aeroponic/porous-tube roots, full sensor suite","maturity":"PILOT","trl":6,"trl_why":"EDEN ISS ran 286 days in Antarctica and APH runs on ISS, but at 12.5 m2 and 0.2 m2.","key_numbers":[{"label":"EDEN ISS whole-greenhouse productivity 2018","value":0.075,"unit":"kg fresh/m2/day","basis":"measured","sources":["src-zabel2020"]},{"label":"APH root-module growth area","value":0.2,"unit":"m2","basis":"reported","sources":["src-monje2018"]}],"best_for":["E4 arctic","E8 lunar","T4 research station"],"limits":"Small area, high crew-time, worst-case energy; not a production model."}]},{"id":"GROW-S2","name":"Root zone, water and nutrient dosing","function":"Keep oxygen, water and ions at the root at set-points with near-zero discharge.","how_it_works":"Hydroponic NFT channels run a 1-3 mm film of nutrient solution down a slope so roots sit in air and water at once; deep-water rafts buffer temperature and pump failures; aeroponics fogs roots and maximises oxygen but has no buffer if a nozzle clogs. An EC/pH controller doses stock A/B and acid in small pulses, while ion-selective or periodic lab assays correct drift in K, Ca and NO3 that EC cannot see. Transpired water is condensed by the HVAC coil and returned, which is why sealed farms report very high water recirculation. Porous-tube and wick systems survive micro-gravity and power loss but are harder to keep evenly wet: NASA Veggie's passive wicking needed manual watering while APH's porous tubes worked well.","options":[{"name":"NFT / ebb-flow trays with closed-loop EC/pH","principle":"Gravity film or flood-drain over shallow trays","maturity":"COMMERCIAL","trl":9,"trl_why":"Standard in plant factories (Spread reports 98% cultivation water recycling).","key_numbers":[{"label":"Cultivation water recycling, Spread Techno Farm","value":98,"unit":"%","basis":"claimed","sources":["src-fruitnet-spread2017"],"note":"Fruitnet wording is ambiguous ('recycling rate improved by 98%'); treat as company claim"}],"best_for":["all"],"limits":"Pythium and biofilm spread through shared solution; needs per-cassette isolation and disinfection."},{"name":"High-pressure aeroponics","principle":"Mist roots on a timer","maturity":"COMMERCIAL","trl":8,"trl_why":"AeroFarms used aeroponics commercially; failure tolerance remains a design issue.","key_numbers":[{"label":"EDEN ISS lettuce productivity range in aeroponic sealed greenhouse","value":"0.043-0.080","unit":"kg/m2/day","basis":"measured","sources":["src-zabel2020"]}],"best_for":["E3 desert","E8 lunar"],"limits":"Nozzle clogging kills roots within hours; needs redundant pumps."},{"name":"Porous tube / wick passive root zone","principle":"Capillary supply under slight suction","maturity":"PILOT","trl":7,"trl_why":"Flown on ISS (APH porous tube works; Veggie wicks inconsistent).","key_numbers":[{"label":"Veggie typical PAR","value":"200-300","unit":"umol/m2/s","basis":"reported","sources":["src-johnson2021"]}],"best_for":["E8 lunar","BYOBU-G screens"],"limits":"Low throughput; uneven moisture."}]},{"id":"GROW-S3","name":"Crop brain: digital twin and set-point control","function":"Turn sensor data into climate, light, irrigation and harvest decisions without a resident grower.","how_it_works":"A crop growth model (photosynthesis-respiration-partitioning) is coupled to a greenhouse energy balance; model-predictive control (MPC) optimises set-points over a horizon against price and weather forecasts, while reinforcement learning (RL) learns policies in a simulator. The Wageningen Autonomous Greenhouse Challenge is the only public, controlled benchmark: teams remotely set points for real 96 m2 compartments, and actuators were driven by a standard process computer. In 2018 one AI team beat expert growers on net profit (EUR 24.78 vs 21.18 per m2) with less heat and water but more electricity; in the 2022 lettuce edition the winner beat the reference, which 'would have been second'. Cameras (RGB/NIR/thermal) give canopy cover and stress indices, so the twin updates its harvest-date estimate daily.","options":[{"name":"MPC on a mechanistic crop + climate model","principle":"Optimise set-points over a forecast horizon","maturity":"PILOT","trl":7,"trl_why":"Demonstrated in AGC compartments and commercial climate computers (Priva/Ridder class); not yet fully unattended.","key_numbers":[{"label":"AGC 2018 winner net profit vs reference growers","value":"24.78 vs 21.18","unit":"EUR/m2 (4-month cucumber)","basis":"measured","sources":["src-hemming2019"]},{"label":"AGC 2018 winner heat and water per kg cucumber vs reference","value":"2.49 vs 3.20 kWh heat; 4.91 vs 5.52 L","unit":"per kg","basis":"measured","sources":["src-hemming2019"]}],"best_for":["all"],"limits":"Needs a calibrated crop model per cultivar; sensors drift."},{"name":"Reinforcement learning policies","principle":"Learn control from simulated and logged episodes","maturity":"EXPERIMENTAL","trl":4,"trl_why":"Mostly simulation comparisons (RL vs MPC, 2023); few real-crop trials.","key_numbers":[{"label":"AGC 2022 (lettuce) winner net profit","value":5.93,"unit":"EUR/m2","basis":"measured","sources":["src-agc3-2022"]}],"best_for":["fleet learning across many identical cassettes"],"limits":"Sample inefficiency; safety constraints; sim-to-real gap."}]},{"id":"GROW-S4","name":"Plant logistics: bring the plant to the robot","function":"Move trays/towers/gutters through fixed stations (seed, transplant, space, inspect, harvest, wash) so that robots are stationary and cheap.","how_it_works":"The industrial insight in Spread, IGS, AeroFarms and patented tower farms is to turn farming into intralogistics: plants live on standard carriers (trays, towers, gutters) that conveyors, shuttles or AMRs index past stationary stations. A stationary harvester or transplanter works on a known pose with a fixed camera, so it needs no free-space navigation and can be calibrated once. Spacing is done by moving plants from dense to wide-pitch carriers at set ages, keeping canopy light capture high. The cost is a rigid, capital-heavy plant: every carrier, rail and station must be built before the first kg. Iron Ox moved whole grow modules with a mobile robot (Grover) to a robotic workstation; it shut down in 2023.","options":[{"name":"Conveyor/shuttle tray systems in multi-tier racks","principle":"Trays index along tiers; lifts move them to work cells","maturity":"COMMERCIAL","trl":9,"trl_why":"Spread Techno Farm Keihanna (designed for 30,000 heads/day) runs automated cultivation.","key_numbers":[{"label":"Spread Techno Farm design output","value":"30,000 heads (about 3 t) per day","unit":"lettuce","basis":"target","sources":["src-fruitnet-spread2017"]},{"label":"Labour reduction vs Spread's earlier Kameoka plant","value":50,"unit":"%","basis":"claimed","sources":["src-fruitnet-spread2017"]}],"best_for":["HATA-4 cassette","farm typology T1"],"limits":"High fixed capex; one jam stops a tier."},{"name":"Mobile robot moves modules to a workstation (Iron Ox Grover class)","principle":"AMR lifts grow modules and carries them to a fixed arm","maturity":"PILOT","trl":7,"trl_why":"Operated in a commercial-scale greenhouse but company closed.","key_numbers":[{"label":"Iron Ox total funding before collapse","value":98,"unit":"million USD","basis":"reported","sources":["src-robotreport-ironox"]}],"best_for":["YOSHI-6G floor"],"limits":"Floor area per robot; few crops fit the module."},{"name":"Vertical tower conveyors","principle":"Towers hang from a track and move to transplant/harvest stations","maturity":"PILOT","trl":7,"trl_why":"Multiple granted patents (e.g. KR102728964B1, JP7105384B2) describe it; its main commercial user (Plenty) reorganised in 2025 and now runs only a strawberry farm (both patents assigned to MJNN LLC).","key_numbers":[{"label":"Plenty peak valuation to post-bankruptcy value","value":"1.9 billion to below 15 million","unit":"USD","basis":"reported","sources":["src-conversation2025"]}],"best_for":["large farms only"],"limits":"Tall clear-height buildings; not foldable.","sources":["src-pat-jp7105384","src-pat-kr102728964"]}]},{"id":"GROW-S5","name":"Manipulation: harvest, pollinate, de-leaf","function":"Detect, reach, detach and place fruit, and set fruit where bees are impossible.","how_it_works":"A harvest cycle has five steps: detect (RGB-D/CNN), localise the peduncle, plan an obstacle-free approach, detach (cut, twist, or suction-then-cut), and place the fruit. A 2014 review of 50 robots found average success of 66% and 33 s per fruit, with none commercialised; SWEEPER (2020) reached 61% only in a crop trained for the robot and 18% in a normal crop, at 24 s per fruit, half of it logistics. The lesson is that crop architecture (fruit hanging clear of leaves, fixed gutter height, single-truss varieties) matters more than the arm. Flying tethered pickers (Tevel) take the arm to orchard fruit; greenhouse tomato robots (Four Growers) and strawberry robots (Dogtooth, Agrist for peppers) are in early commercial deployment. Strawberries indoors still rely on bees (Oishii).","options":[{"name":"Rail-mounted arm in a fixed-coordinate fruit wall","principle":"Pipe-rail cart or gantry with 6-DoF arm and vision","maturity":"PILOT","trl":6,"trl_why":"Commercial pilots exist (Four Growers GR series, SWEEPER trials); success still <70% in normal crops.","key_numbers":[{"label":"Average harvest success across 50 harvesting robots","value":66,"unit":"%","basis":"measured","sources":["src-bac2014"]},{"label":"Average cycle time across 50 robots","value":33,"unit":"s per fruit","basis":"measured","sources":["src-bac2014"]},{"label":"SWEEPER success, modified vs current crop","value":"61 vs 18","unit":"%","basis":"measured","sources":["src-arad2020"]},{"label":"SWEEPER cycle time","value":24,"unit":"s per fruit (15 s in lab at higher speed)","basis":"measured","sources":["src-arad2020"]},{"label":"Ridge-planting strawberry dual-arm robot success (greenhouse, after flower/fruit thinning; untrimmed 30.23%)","value":49.3,"unit":"%","basis":"measured","sources":["src-yu2024"]}],"best_for":["YOSHI-6G cherry tomato wall"],"limits":"Throughput of about 90-150 fruit/h per arm is a fraction of a skilled picker."},{"name":"Tethered flying pickers (Tevel FAR)","principle":"Drones tethered to a ground unit pick with suction arm","maturity":"PILOT","trl":7,"trl_why":"Named commercial deployments in Italy, California and Chile (company site).","key_numbers":[{"label":"Fruit types claimed","value":"apples, peaches, apricots, nectarines, plums, pears","unit":"-","basis":"claimed","sources":["src-tevel-site"]}],"best_for":["E7 orchard estates"],"limits":"Orchard-only; no throughput data published."},{"name":"Biological pollination (bumblebees/honeybees indoors)","principle":"Hive in the grow room","maturity":"COMMERCIAL","trl":9,"trl_why":"Standard in greenhouse tomato; used in vertical strawberry farms.","key_numbers":[{"label":"Oishii total capital raised (incl. 2026 Series C first close of 150)","value":370,"unit":"million USD","basis":"reported","sources":["src-pulse2-oishii"]}],"best_for":["strawberry","tomato"],"limits":"Hive health under LEDs; quarantine sites."}]},{"id":"GROW-S6","name":"Protection and sensing robots (UV-C, laser, scouting)","function":"Replace sprays and scouting walks with light doses and cameras.","how_it_works":"UV-C (about 254 nm) damages fungal DNA; applied at night it defeats photolyase repair that blue light triggers in daylight, so a slow night pass suppresses powdery mildew without residues. Saga Robotics' Thorvald does this on strawberries and vines while also counting flowers and fruit every few days. Laser weeders use a CNN to locate each weed meristem and fire a diode laser for milliseconds, heating it until it dies; throughput scales with the number of laser heads. The same camera pass is a phenotyping scan, so protection and sensing share the platform.","options":[{"name":"Night UV-C rover (Thorvald class)","principle":"Autonomous rover with UV-C lamp arrays","maturity":"COMMERCIAL","trl":9,"trl_why":"Sold and operated over several seasons in UK strawberries and US vineyards.","key_numbers":[{"label":"Share of UK tabletop strawberry production treated","value":"about one fifth (2025 news) to 30% (company site)","unit":"%","basis":"claimed","sources":["src-saga-site","src-saga-news2025"]},{"label":"Pesticide reduction","value":"70-100","unit":"%","basis":"claimed","sources":["src-saga-site"]},{"label":"California vineyard area treated 2025","value":"almost 1,300","unit":"acres","basis":"claimed","sources":["src-saga-site"]}],"best_for":["YOSHI-6G","E7 farm"],"limits":"Mildews mainly; needs repeated passes; UV hazard to people."},{"name":"Laser weeder (Carbon Robotics)","principle":"CNN + diode lasers","maturity":"COMMERCIAL","trl":9,"trl_why":"Sold commercially since 2022; G2 line launched Feb 2025.","key_numbers":[{"label":"G1 LaserWeeder lasers","value":"30 x 150","unit":"W","basis":"claimed","sources":["src-carbon-site"]},{"label":"G1 coverage","value":"0.5-1.5","unit":"acre/h","basis":"claimed","sources":["src-carbon-site"]},{"label":"G2 600 price","value":"1.4 million plus annual support","unit":"USD","basis":"reported","sources":["src-gai-carbon-g2"]},{"label":"G2 600 kill rate","value":450000,"unit":"weeds/h","basis":"claimed","sources":["src-carbon-yt-g2"]}],"best_for":["E7 vegetable fields"],"limits":"Capex sized for large vegetable farms; irrelevant inside cassettes."}]},{"id":"GROW-S7","name":"Open-ground light robots","function":"Seed, weed, water and scout outdoor beds without heavy tractors.","how_it_works":"Cartesian gantries (FarmBot) know each plant's x,y coordinate because they planted it, so watering and weeding are just coordinate lookups. Swarms of small electric seeders (Fendt Xaver: 50 kg, 400 W robots in groups of 6-12) trade width for number and record every seed's position and time, which later becomes the weeding map. Large autonomy retrofits (John Deere, Monarch) keep the tractor form; Monarch's 2025 crisis and lawsuit over tractors 'unable to operate autonomously' show the gap between demo and unsupervised field work.","options":[{"name":"Cartesian gantry over raised beds (FarmBot)","principle":"Stepper-driven gantry with tool-changer: seeder, watering nozzle, weeder, soil sensor, camera","maturity":"COMMERCIAL","trl":8,"trl_why":"Open-source kits sold for a decade; mainly education/research, little production evidence.","key_numbers":[{"label":"Tool envelope spec","value":"<=0.5 kg, <=200 mm high, <=100 mm diameter","unit":"per tool","basis":"reported","sources":["src-farmbot-docs"]}],"best_for":["home garden beds","E7"],"limits":"Low yield area; not weather-proof long term."},{"name":"Seeding swarms (Fendt Xaver)","principle":"6-12 small electric robots, cloud-planned","maturity":"PILOT","trl":6,"trl_why":"Field trials and dealer offers, limited commercial scale.","key_numbers":[{"label":"Robot mass and motor","value":"50 kg; 400 W","unit":"-","basis":"reported","sources":["src-fwi-xaver"]},{"label":"Seed hopper / area per fill","value":"20 L / about 0.5 ha at 90,000 seeds/ha","unit":"-","basis":"reported","sources":["src-xaver-dealer"]}],"best_for":["E7 steppe/farmland"],"limits":"Seeding only; slow per unit."},{"name":"Autonomous electric tractor (Monarch)","principle":"Retrofit autonomy on a compact tractor","maturity":"PILOT","trl":6,"trl_why":"Sold but litigation alleges autonomy failures; pivot to licensing.","key_numbers":[{"label":"Monarch capital raised","value":">=220","unit":"million USD","basis":"reported","sources":["src-tc-monarch"]},{"label":"Possible layoffs announced Nov 2025","value":"up to 102","unit":"employees","basis":"reported","sources":["src-tc-monarch"]}],"best_for":["vineyards, orchards"],"limits":"Business risk; supervision still needed."}]},{"id":"GROW-S8","name":"On-site protein and loop closure","function":"Turn residues, CO2 and light into protein; close N, P and carbon loops.","how_it_works":"Black soldier fly larvae (BSFL) digest wet organic residues in 12-14 days and convert roughly 10-26% of substrate dry matter into larval biomass, leaving frass as fertiliser. Duckweeds (Lemna, Wolffia) double fast on shallow nutrient water and are harvested by skimming; growth rises with light up to at least 150 umol/m2/s. Cyanobacteria (Limnospira/spirulina) in air-lift photobioreactors make protein and O2 from CO2, as in MELiSSA compartment 4a. These shorten the food chain by one trophic step versus animals, but only BSFL and mushrooms run on waste rather than electricity.","options":[{"name":"BSF larvae bin (KAMADO-B)","principle":"Larval digestion of residues","maturity":"COMMERCIAL","trl":8,"trl_why":"Industrial BSF plants exist; small closed-loop integration is new.","key_numbers":[{"label":"Bioconversion rate, restaurant food waste (industrial scale, 14 d)","value":18.34,"unit":"% (vs 11.02% Gainesville diet)","basis":"measured","sources":["src-bsf-insects2026"]},{"label":"Bioconversion rate with moderate orthophosphate","value":"22.5-26.1","unit":"%","basis":"measured","sources":["src-bsf-p2026"]}],"best_for":["all sites with kitchen/crop residue"],"limits":"EU prohibits food waste as insect substrate (per the 2026 study); larvae feed to fish/poultry rather than humans in most markets."},{"name":"Duckweed skim shelves (UKI-P)","principle":"Floating macrophyte on recirculating nutrient film under LED","maturity":"PILOT","trl":5,"trl_why":"Small re-circulating indoor vertical duckweed farms demonstrated (Petersen 2022).","key_numbers":[{"label":"Growth-rate increase from 50 to 150 umol/m2/s (L. minor / W. hyalina)","value":"67 / 76","unit":"%","basis":"measured","sources":["src-petersen2022"]}],"best_for":["T4 station","E8 lunar","UKI-P"],"limits":"LED energy per kg protein; food-safety approval of Wolffia varies by market."},{"name":"Cyanobacteria photobioreactor (MELiSSA C4a)","principle":"Air-lift PBR producing O2 and edible biomass","maturity":"PILOT","trl":5,"trl_why":"Integrated with nitrifying and animal compartments in the MELiSSA Pilot Plant.","key_numbers":[{"label":"MELiSSA Pilot Plant higher-plant chamber volume","value":9,"unit":"m3","basis":"reported","sources":["src-peiro2020"]}],"best_for":["E8 lunar","T4"],"limits":"Contamination control; palatability."}]}],"projects":[{"id":"PRJ-spread","name":"Techno Farm Keihanna","org":"Spread Co.","country":"Japan","year_or_period":"2017 announced; 2018 operating","what":"Automated lettuce plant factory designed for 30,000 heads/day with conveyor-based cultivation and in-house LEDs","status":"active","outcome_or_lesson":"Rare long-lived profitable-scale PFAL; standardised trays + stationary automation + one crop; status beyond 2022 not re-verified here.","sources":["src-fruitnet-spread2017"]},{"id":"PRJ-aerofarms","name":"AeroFarms","org":"AeroFarms","country":"USA","year_or_period":"2004-present (Ch.11 Jun 2023; emerged Sep 2023; later acquired by a Palm Ventures affiliate per company site)","what":"Aeroponic vertical farms; Newark converted to R&D; Danville VA farm sold to investor NewCo","status":"active","outcome_or_lesson":"Survived by cutting everything except one farm's ramp-up to profitability.","sources":["src-aerofarms-site","src-agfunder-aerofarms"]},{"id":"PRJ-bowery","name":"Bowery Farming","org":"Bowery","country":"USA","year_or_period":"2015-Nov 2024","what":"Multi-site vertical farms for greens","status":"closed","outcome_or_lesson":">$700M raised, $2.3B peak valuation, $150M KKR loan; closed via ABC with 187 layoffs - debt-financed capex on a low-margin commodity.","sources":["src-agdive-bowery"]},{"id":"PRJ-plenty","name":"Plenty Unlimited","org":"Plenty","country":"USA","year_or_period":"2014-present (Ch.11 23 Mar 2025; emerged 29 May 2025, strawberries only)","what":"Tower vertical farms; Compton LA leafy-greens farm closed Dec 2024 (headline only); Virginia strawberry farm with Driscoll's","status":"active","outcome_or_lesson":"About $1B raised (~$940M per Hortidaily); value reportedly fell from $1.9B to below $15M (The Conversation); experts cite unachievable plans and loss of grower voice. Emerged from Ch.11 after 53 days with only the Virginia strawberry farm; 2026 operating status not independently confirmed.","sources":["src-agfunder-plenty","src-conversation2025","src-elevenflo-plenty","src-hortidaily-plenty2025","src-packer-plenty-compton"]},{"id":"PRJ-80acres","name":"80 Acres Farms","org":"80 Acres Farms","country":"USA","year_or_period":"2015-Aug 2026","what":"Five fully automated indoor farms, 18,000+ retail outlets; acquired Kalera farms and merged with Soli Organic","status":"closed","outcome_or_lesson":">$350M raised; CEO Mike Zelkind: could not secure capital (3 Aug 2026). Infinite Acres CEO and former 80 Acres president blamed 'impatient capital and an accumulating debt burden' (JPFA symposium, 1 Sep 2026).","sources":["src-agfunder-80acres","src-hortidaily-infiniteacres"]},{"id":"PRJ-infiniteacres","name":"Infinite Acres","org":"80 Acres (JV with Priva and Ocado from 2019)","country":"Netherlands","year_or_period":"2019-Sep 2026","what":"Vertical-farm technology supplier","status":"failed","outcome_or_lesson":"Declared bankrupt 8 Sep 2026 after the US parent wound down: a tech vendor tied to one operator dies with it.","sources":["src-hortidaily-infiniteacres"]},{"id":"PRJ-kalera","name":"Kalera","org":"Kalera","country":"USA/Germany","year_or_period":"to Apr 2023 (Ch.11)","what":"Vertical lettuce farms; assets later sold, three farms acquired by 80 Acres (2025)","status":"failed","outcome_or_lesson":"Assets outlived two owners; the buildings were never the problem, the capital structure was.","sources":["src-packer-kalera","src-bizj-80acres-kalera"]},{"id":"PRJ-jones","name":"Jones Food Company (JFC2)","org":"Jones Food Company / Ocado (~70%)","country":"UK","year_or_period":"to Apr 2025 (administration)","what":"14,448 m2 vertical farm opened 2024","status":"closed","outcome_or_lesson":"High tech and UK energy costs vs low produce prices; 61 redundancies.","sources":["src-agnav-jones"]},{"id":"PRJ-infarm","name":"Infarm","org":"Infarm","country":"Germany","year_or_period":"2013-2023","what":"In-store and hub modular vertical farms across Europe and beyond","status":"failed","outcome_or_lesson":"Declared bankrupt (Sep 2023 headline); distributed in-store farms multiplied service visits. Details not re-verified here.","sources":["src-agfunder-infarm"]},{"id":"PRJ-appharvest","name":"AppHarvest","org":"AppHarvest","country":"USA","year_or_period":"2018-Jul 2023 (Ch.11)","what":"60-acre Morehead KY glasshouse plus three more; SPAC-listed 2020","status":"failed","outcome_or_lesson":"Greenhouses sold to established growers (Mastronardi, Bosch, Equilibrium): the assets work under experienced operators.","sources":["src-wiki-appharvest"]},{"id":"PRJ-ironox","name":"Iron Ox","org":"Iron Ox","country":"USA","year_or_period":"2015-2023","what":"Robotic greenhouse: Grover AMR moved modules to a robotic arm; Max managed nutrients","status":"closed","outcome_or_lesson":"$98M raised; ~half staff laid off Nov 2022; shut down 2023; Lockhart site later bought by Sensei Farms (headline).","sources":["src-robotreport-ironox","src-bizj-ironox"]},{"id":"PRJ-oishii","name":"Oishii","org":"Oishii","country":"USA/Japan","year_or_period":"2016-present","what":"Indoor vertical strawberries with bee pollination; acquired Tortuga AgTech (2025) robotics","status":"active","outcome_or_lesson":"$150M Series C first close May 2026 ($370M total): premium fruit, not commodity greens, is where indoor capital still flows.","sources":["src-pulse2-oishii"]},{"id":"PRJ-igs","name":"IGS Growth Tower","org":"Intelligent Growth Solutions","country":"UK","year_or_period":"2013-present","what":"Sealed tower vertical farm sold as technology to operators","status":"active","outcome_or_lesson":"Vendor model (sell towers, not lettuce); raised $28.5M Jan 2024 (snippet, unverified).","sources":["src-igs-snippet"]},{"id":"PRJ-agc","name":"Autonomous Greenhouse Challenge","org":"Wageningen University & Research","country":"Netherlands","year_or_period":"2018, 2019-20, 2021-22, 2024-25 editions","what":"International teams control real greenhouse compartments remotely with AI","status":"research","outcome_or_lesson":"AI beat expert growers on profit in 2018 (cucumber) and the reference ranked only second in 2022 (lettuce): control is no longer the bottleneck.","sources":["src-hemming2019","src-agc3-2022"]},{"id":"PRJ-sweeper","name":"SWEEPER","org":"EU H2020 consortium (WUR et al.)","country":"EU","year_or_period":"2015-2018","what":"Sweet pepper harvesting robot in a commercial greenhouse","status":"research","outcome_or_lesson":"61% success only when the crop was adapted; 18% otherwise.","sources":["src-arad2020"]},{"id":"PRJ-fourgrowers","name":"GR-series tomato harvester","org":"Four Growers","country":"USA","year_or_period":"2019-present","what":"Stereo-vision arm robot picking and grading greenhouse tomatoes; Syngenta collaboration 2023","status":"pilot","outcome_or_lesson":"Early fleet deployments; no independent throughput data found.","sources":["src-fourgrowers"]},{"id":"PRJ-saga","name":"Thorvald","org":"Saga Robotics","country":"Norway/UK/USA","year_or_period":"2016-present","what":"Autonomous night UV-C and crop-counting rover","status":"shipped","outcome_or_lesson":"Protection, not picking, is the first robot task that paid: one pass delivers a dose and a dataset.","sources":["src-saga-site","src-saga-news2025"]},{"id":"PRJ-tevel","name":"Flying Autonomous Robots","org":"Tevel Aerobotics","country":"Israel","year_or_period":"2016-present","what":"Tethered drones picking orchard fruit","status":"pilot","outcome_or_lesson":"Commercial pilots named (Rivoira IT, HMC Farms US, Unifrutti CL); throughput undisclosed.","sources":["src-tevel-site","src-tevel-yt"]},{"id":"PRJ-dogtooth","name":"Strawberry harvesting robot","org":"Dogtooth Technologies","country":"UK","year_or_period":"2016-present","what":"Tabletop strawberry picker on rails","status":"pilot","outcome_or_lesson":"Third-party pages claim up to 200 kg/day (unverified).","sources":["src-dogtooth-snippet"]},{"id":"PRJ-agrist","name":"Agrist L","org":"Agrist","country":"Japan","year_or_period":"2019-present","what":"Wire-hanging harvest robot for peppers/cucumbers moving above the crop","status":"pilot","outcome_or_lesson":"Hanging-rail kinematics avoids floor obstacles - relevant to ridge rails (unverified specs).","sources":["src-agrist-snippet"]},{"id":"PRJ-carbon","name":"LaserWeeder","org":"Carbon Robotics","country":"USA","year_or_period":"2018-present","what":"Tractor-pulled CNN + laser weeder; G2 modular line 2025","status":"shipped","outcome_or_lesson":"Proves perception-to-actuation at commercial throughput; capex suits large vegetable farms.","sources":["src-carbon-site","src-gai-carbon-g2","src-carbon-yt-g2"]},{"id":"PRJ-monarch","name":"MK-V autonomous electric tractor","org":"Monarch Tractor","country":"USA","year_or_period":"2018-present (crisis Nov 2025)","what":"Electric tractor with driver-optional autonomy","status":"pilot","outcome_or_lesson":"Lost Foxconn manufacturing, dealer lawsuit over autonomy, pivot to licensing (>70% of 2025 revenue).","sources":["src-tc-monarch"]},{"id":"PRJ-xaver","name":"Xaver","org":"Fendt / AGCO","country":"Germany","year_or_period":"2017-present","what":"Swarm of small electric seeding robots","status":"pilot","outcome_or_lesson":"Seed-level position logging is the reusable idea.","sources":["src-fwi-xaver","src-xaver-dealer"]},{"id":"PRJ-farmbot","name":"FarmBot Genesis","org":"FarmBot Inc.","country":"USA","year_or_period":"2016-present","what":"Open-source CNC gantry farming kit","status":"shipped","outcome_or_lesson":"Shows coordinate farming; little evidence of production-scale yield.","sources":["src-farmbot-docs"]},{"id":"PRJ-edeniss","name":"EDEN ISS","org":"DLR and EU H2020 consortium","country":"Antarctica (Neumayer III)","year_or_period":"2018-","what":"Container space-analog greenhouse, 12.5 m2","status":"research","outcome_or_lesson":"268 kg in 286 days (21.4 kg/m2 per season; 27.4 kg/m2/yr annualised) - realistic worst-case for small sealed systems.","sources":["src-zabel2020"]},{"id":"PRJ-nasa","name":"Veggie and Advanced Plant Habitat","org":"NASA","country":"USA/ISS","year_or_period":"2014-present","what":"Leafy greens (Veggie) and fully automated research chamber (APH, 0.2 m2)","status":"active","outcome_or_lesson":"Passive watering needed crew help; actively controlled porous tubes worked.","sources":["src-johnson2021","src-monje2018"]},{"id":"PRJ-lp1","name":"Lunar Palace 1 / Lunar Palace 365","org":"Beihang University","country":"China","year_or_period":"2014; 2017-2018 (370 days)","what":"Bioregenerative habitat with 58 m2 plant area, mealworms for protein","status":"research","outcome_or_lesson":"98.2% material closure (preprint); plant production met crew plant-food needs; the ~55%-of-food figure refers to the 3-crew 2014 design (Wikipedia), not verified for LP365.","sources":["src-fu2021","src-wiki-lp1"]},{"id":"PRJ-melissa","name":"MELiSSA Pilot Plant","org":"ESA / UAB Barcelona","country":"Spain","year_or_period":"1989-present","what":"Compartmentalised loop: nitrifiers, cyanobacteria, higher plants, rat crew mock-up","status":"research","outcome_or_lesson":"Air distribution alone decided lettuce uniformity in a 9 m3 chamber - CFD before crops.","sources":["src-garcia2021","src-peiro2020"]},{"id":"PRJ-smallhold","name":"Smallhold","org":"Smallhold","country":"USA","year_or_period":"to Feb 2024 (bankruptcy)","what":"Mushroom vertical farms","status":"failed","outcome_or_lesson":"Even low-energy crops fail when the business is capital-heavy distributed farms (headline only).","sources":["src-agfunder-smallhold"]},{"id":"PRJ-naurvik","name":"Naurvik","org":"Arctic Research Foundation with AAFC, CSA and NRC","country":"Canada (Nunavut)","year_or_period":"2019-present","what":"Off-grid three-container hydroponic farm in Gjoa Haven, run by local technicians","status":"operating","outcome_or_lesson":"Seven years of community operation above the Arctic Circle on mostly wind and solar; space-agency partners treat it as a lunar analogue. No yield, kWh/kg or cost data published - the evidence gap ORIJO KITA must close with a public ledger.","sources":["src-vfd-naurvik"]},{"id":"PRJ-growcer","name":"Growcer (incl. acquired Freight Farms assets)","org":"The Growcer","country":"Canada","year_or_period":"2015-present","what":"Container farms for northern and remote communities; since 2025 a farm-as-a-service fund under CAD 1,000/week; bought Freight Farms assets July 2025","status":"operating","outcome_or_lesson":"The survivor in container farming bundled service, financing and support - the opposite of Freight Farms, which sold hardware tied to a cloud it could not keep alive. Supports the SHIKINEN lease model.","sources":["src-vfd-growcer-2026","mind:src-freightfarms-ch7"]}],"papers":[{"id":"P-zabel2020","title":"Biomass Production of the EDEN ISS Space Greenhouse in Antarctica During the 2018 Experiment Phase","authors":"Zabel, Zeidler, Vrakking et al.","year":2020,"venue":"Frontiers in Plant Science","doi_or_url":"10.3389/fpls.2020.00656","finding":"268 kg fresh food from 12.5 m2 in 286 days (0.075 kg/m2/day; cucumber 0.321, lettuce 0.043-0.080, tomato 0.046-0.052 kg/m2/day).","type":"field-trial"},{"id":"P-fu2021","title":"Establishment of a closed artificial ecosystem to ensure human long-term survival on the moon","authors":"Fu, Yi, Du, Liu, Xie, Liu","year":2021,"venue":"bioRxiv","doi_or_url":"10.1101/2021.01.12.426282","finding":"370-day crewed run reached 98.2% material closure, 99.7% urine and 67% solid-waste recovery.","type":"experiment"},{"id":"P-johnson2021","title":"Supplemental Food Production With Plants: A Review of NASA Research","authors":"Johnson, Boles, Spencer, ..., Wheeler","year":2021,"venue":"Frontiers in Astronomy and Space Sciences","doi_or_url":"10.3389/fspas.2021.734343","finding":"About 40-50 m2 of high-light crops per person supply dietary calories; insects could cut it to 35-40 m2.","type":"review"},{"id":"P-kusuma2020","title":"From physics to fixtures to food: current and potential LED efficacy","authors":"Kusuma, Pattison, Bugbee","year":2020,"venue":"Horticulture Research","doi_or_url":"10.1038/s41438-020-0283-7","finding":"Best fixtures reach about 3 umol/J; current-technology limits are 3.4 (white+red) and 4.1 (blue+red) umol/J.","type":"review"},{"id":"P-graamans2018","title":"Plant factories versus greenhouses: Comparison of resource use efficiency","authors":"Graamans, Baeza, van den Dobbelsteen, Tsafaras, Stanghellini","year":2018,"venue":"Agricultural Systems","doi_or_url":"10.1016/j.agsy.2017.11.003","finding":"Plant factory lettuce needs 247 kWh_e/kg dry vs 70-211 kWh_e/kg dry in greenhouses across 24-68 N.","type":"model"},{"id":"P-bac2014","title":"Harvesting Robots for High-value Crops: State-of-the-art Review and Challenges Ahead","authors":"Bac, van Henten, Hemming, Edan","year":2014,"venue":"Journal of Field Robotics","doi_or_url":"10.1002/rob.21525","finding":"Across 50 robots: 85% localisation, 75% detachment, 66% harvest success, 33 s cycle, none commercialised.","type":"review"},{"id":"P-arad2020","title":"Development of a sweet pepper harvesting robot","authors":"Arad, Balendonck, Barth et al.","year":2020,"venue":"Journal of Field Robotics","doi_or_url":"10.1002/rob.21937","finding":"24 s per fruit; 61% success in best-fit crop vs 18% in current crop.","type":"field-trial"},{"id":"P-bac2017","title":"Performance Evaluation of a Harvesting Robot for Sweet Pepper","authors":"Bac, Hemming, van Tuijl, Barth et al.","year":2017,"venue":"Journal of Field Robotics","doi_or_url":"10.1002/rob.21709","finding":"The robot generally had difficulty picking; stem perception was the useful new capability (no headline number in abstract).","type":"field-trial"},{"id":"P-hemming2019","title":"Remote Control of Greenhouse Vegetable Production with Artificial Intelligence","authors":"Hemming, de Zwart, Elings, Righini, Petropoulou","year":2019,"venue":"Sensors","doi_or_url":"10.3390/s19081807","finding":"Winning AI team earned EUR 24.78/m2 vs 21.18 for expert growers over 4 months of cucumber in 96 m2 compartments.","type":"experiment"},{"id":"P-vandelden2021","title":"Current status and future challenges in implementing and upscaling vertical farming systems","authors":"van Delden, SharathKumar, Butturini, Graamans, Heuvelink, Kacira et al.","year":2021,"venue":"Nature Food","doi_or_url":"10.1038/s43016-021-00402-w","finding":"Upscaling needs gains in profitability, energy efficiency, policy and acceptance (qualitative review; 472 citations).","type":"review"},{"id":"P-kozai2019","title":"Towards sustainable plant factories with artificial lighting (PFALs) for achieving SDGs","authors":"Kozai","year":2019,"venue":"IJABE 12(5)","doi_or_url":"10.25165/j.ijabe.20191205.5177","finding":"Reviews cost and productivity of Japanese PFALs; companion slides cite 100 t/yr from a 404 m2 floor PFAL (about 250 kg/m2 floor/yr, multi-tier; snippet).","type":"review"},{"id":"P-kaschubek2021","title":"Optimized crop growth area composition for long duration spaceflight","authors":"Kaschubek","year":2021,"venue":"Life Sciences in Space Research","doi_or_url":"10.1016/j.lssr.2021.05.005","finding":"Minimum area for exact macronutrients 106.86 m2/person; 39.88 m2 if wheat + potato with relaxed composition.","type":"model"},{"id":"P-yan2019","title":"Growth, Nutritional Quality, and Energy Use Efficiency of Hydroponic Lettuce as Influenced by DLI","authors":"Yan, He, Niu et al.","year":2019,"venue":"HortScience","doi_or_url":"10.21273/HORTSCI14236-19","finding":"No significant fresh/dry weight difference between DLI 12.60 and 15.12 mol/m2/d while energy use efficiency fell linearly with DLI.","type":"experiment"},{"id":"P-martin2024","title":"Environmental life cycle assessment of an on-site modular cabinet vertical farm","authors":"Martin, Bustamante, Zauli et al.","year":2024,"venue":"Frontiers in Sustainable Food Systems","doi_or_url":"10.3389/fsufs.2024.1403580","finding":"0.78-1.18 kg CO2e per kg lettuce produced on site, comparable to or lower than conventional sourcing.","type":"model"},{"id":"P-lcareview","title":"Quantitative review of environmental life cycle assessments of vertical farms (preprint)","authors":"not confirmed","year":2025,"venue":"Research Square (preprint)","doi_or_url":"https://www.researchsquare.com/article/rs-10962166/latest","finding":"Snippet: median 62 kg/m2 cultivation-area yield and 10-39 kWh/kg energy use (abstract not read).","type":"review"},{"id":"P-vfmodel2024","title":"An integrated energy-yield-cost model to evaluate clean energy solutions for vertical farms","authors":"not confirmed","year":2024,"venue":"Computers and Electronics in Agriculture","doi_or_url":"https://www.sciencedirect.com/science/article/pii/S016816992400200X","finding":"Snippet: producing 1 kg lettuce in VFs requires 7-10 kWh (paper not read).","type":"model"},{"id":"P-petersen2022","title":"Influence of Light Intensity and Spectrum on Duckweed Growth and Proteins in a Small-Scale, Re-Circulating Indoor Vertical Farm","authors":"Petersen, Demann, Restemeyer et al.","year":2022,"venue":"Plants","doi_or_url":"10.3390/plants11081010","finding":"Raising light from 50 to 150 umol/m2/s increased growth 67-76% and protein yield 50-89%; spectrum had no significant effect.","type":"experiment"},{"id":"P-coughlan2022","title":"Duckweed bioreactors: Challenges and opportunities for large-scale indoor cultivation of Lemnaceae","authors":"Coughlan, Walsh, Bolger, Burnell et al.","year":2022,"venue":"Journal of Cleaner Production","doi_or_url":"10.1016/j.jclepro.2021.130285","finding":"Review of indoor duckweed bioreactor design (abstract not available; no number extracted).","type":"review"},{"id":"P-garcia2021","title":"Integration of Nitrifying, Photosynthetic and Animal Compartments at the MELiSSA Pilot Plant","authors":"Garcia-Gragera, Arnau, Peiro et al.","year":2021,"venue":"Frontiers in Astronomy and Space Sciences","doi_or_url":"10.3389/fspas.2021.750616","finding":"Three compartments (nitrifier, Limnospira PBR, rat isolator) ran integrated with high robustness.","type":"experiment"},{"id":"P-peiro2020","title":"Air Distribution in a Fully-Closed Higher Plant Growth Chamber Impacts Crop Performance of Hydroponically-Grown Lettuce","authors":"Peiro, Pannico, Colleoni et al.","year":2020,"venue":"Frontiers in Plant Science","doi_or_url":"10.3389/fpls.2020.00537","finding":"In a 9 m3 closed chamber, CFD-redesigned air inlets turned uneven lettuce growth into homogeneous growth.","type":"experiment"},{"id":"P-bsf2026","title":"From Waste to Resource: Performance of Black Soldier Fly Larvae Reared on Restaurant Food Waste at an Industrial Scale","authors":"not extracted","year":2026,"venue":"Insects","doi_or_url":"10.3390/insects17040396","finding":"Restaurant waste gave BCR 18.34% vs 11.02% and FCR 5.48 vs 9.09 on a standard diet over 14 days.","type":"field-trial"},{"id":"P-bsfP2026","title":"Phosphorus role in bioconversions of food waste by black soldier fly larvae","authors":"not extracted","year":2026,"venue":"Waste Management","doi_or_url":"10.1016/j.wasman.2026.115475","finding":"Moderate orthophosphate kept BCR at 22.5-26.1%; excess dropped it to 8.2%.","type":"experiment"},{"id":"P-morcego2023","title":"Reinforcement Learning versus Model Predictive Control on greenhouse climate control","authors":"Morcego, Yin, Boersma, van Henten et al.","year":2023,"venue":"Computers and Electronics in Agriculture","doi_or_url":"10.1016/j.compag.2023.108372","finding":"Unified framework comparison of RL and MPC in simulation (no headline number in abstract).","type":"model"},{"id":"P-lowenberg2019","title":"Economics of robots and automation in field crop production","authors":"Lowenberg-DeBoer, Huang, Grigoriadis, Blackmore","year":2019,"venue":"Precision Agriculture","doi_or_url":"10.1007/s11119-019-09667-5","finding":"Of 4,817 documents only 18 economic studies qualified; all found some profitable scenarios, mostly on prototype data.","type":"review"},{"id":"P-vougioukas2019","title":"Agricultural Robotics","authors":"Vougioukas","year":2019,"venue":"Annual Review of Control, Robotics, and Autonomous Systems","doi_or_url":"10.1146/annurev-control-053018-023617","finding":"Breeding and horticultural practice that reduce variability at source are key; snippet reports 50-84% harvest success for apple/citrus arms.","type":"review"},{"id":"P-yu2024","title":"Design, Development, Integration, and Field Evaluation of a Ridge-Planting Strawberry Harvesting Robot","authors":"Yu, Xie, Zhang et al.","year":2024,"venue":"Agriculture","doi_or_url":"10.3390/agriculture14122126","finding":"Dual-arm robot averaged 49.3% harvest success in a natural greenhouse after thinning.","type":"field-trial"},{"id":"P-monje2018","title":"Validation of the Advanced Plant Habitat Facility on ISS","authors":"Monje, Richards, Dimapilis et al.","year":2018,"venue":"NASA NTRS","doi_or_url":"https://ntrs.nasa.gov/citations/20180006722","finding":"APH grows plants in a 0.2 m2 instrumented root module with LEDs up to 600 umol/m2/s red and white.","type":"experiment"},{"id":"P-joensuu2024","title":"Assessment of climate change impact and resource-use efficiency of lettuce production in vertical farming and greenhouse production in Finland","authors":"Joensuu, Kotilainen, Rasanen et al.","year":2024,"venue":"Int. J. Life Cycle Assessment","doi_or_url":"10.1007/s11367-024-02343-5","finding":"Energy source and waste-heat recovery dominate the VF vs greenhouse comparison in Finland (no single number in abstract).","type":"model"},{"id":"PA-riggio2019","title":"Risk of Human Pathogen Internalization in Leafy Vegetables During Lab-Scale Hydroponic Cultivation","authors":"Riggio G, Jones S, Gibson K","year":2019,"venue":"Horticulturae 5(1):25","doi_or_url":"10.3390/HORTICULTURAE5010025","finding":"Reviews six hydroponic types (NFT, DWC, flood and drain, drip, wick, aeroponics); CEA is a potential risk-management route for produce safety, but internalization through roots in recirculating solution is the specific hydroponic hazard (abstract truncated; conclusions not fully read).","type":"review"}],"numbers":[{"id":"GN-01","label":"LED fixture efficacy, best tested","value":"~3.0","unit":"umol/J","basis":"measured","context":"Blue+red; white+red 2.5-2.8","sources":["src-kusuma2020"]},{"id":"GN-02","label":"LED efficacy ceiling with current technology","value":"3.4-4.1","unit":"umol/J","basis":"calculated","context":"Only ~13-37% headroom left: future kWh/kg gains must come from yield per photon and daylight","sources":["src-kusuma2020"]},{"id":"GN-03","label":"Purchased electricity, plant factory lettuce","value":247,"unit":"kWh_e/kg dry","basis":"calculated","context":"vs 70 (NL), 111 (UAE), 182-211 (SE) greenhouses","sources":["src-graamans2018"]},{"id":"GN-04","label":"Lighting electricity per kg lettuce at DLI 15, 3.0 umol/J","value":"7.2-10.6","unit":"kWh/kg fresh","basis":"calculated","context":"Formula: DLI x 365 / (PPE x 3.6) / yield; yields 48-70 kg/m2/yr from v3","sources":["src-kusuma2020","src-anyground-v3"]},{"id":"GN-05","label":"Typical VF lettuce energy intensity","value":"7.7-12.5","unit":"kWh/kg fresh","basis":"calculated","context":"1 / (0.08-0.13 kg FW/kWh) from Pennisi et al. 2025 review abstract. Unverified: 10-39 kWh/kg (Research Square preprint snippet; page body not readable) and 7-10 kWh/kg (Keyvan & Roshandel 2024; full text 403)","sources":["src-pennisi2025","src-lca-review-preprint","src-vf-energy-model2024"]},{"id":"GN-06","label":"Common VF lettuce yield per cultivation area","value":"60-105","unit":"kg/m2/yr","basis":"reported","context":"Peer-reviewed review abstract; per cultivation (tier) area. Earlier snippet median of 62 (preprint) not verifiable","sources":["src-pennisi2025","src-lca-review-preprint"]},{"id":"GN-07","label":"EDEN ISS greenhouse edible yield, 2018 season","value":21.4,"unit":"kg/m2 per 286-day season","basis":"measured","context":"268 kg / 12.5 m2 in 286 days = 21.4 kg/m2 per season; annualised 0.075 kg/m2/d x 365 = 27.4 kg/m2/yr (the abstract figure, consistent)","sources":["src-zabel2020"]},{"id":"GN-08","label":"EDEN ISS cucumber productivity","value":0.321,"unit":"kg/m2/day","basis":"measured","context":"= 117 kg/m2/yr; tomato 0.046-0.052","sources":["src-zabel2020"]},{"id":"GN-09","label":"Crop area per person for dietary calories","value":"40-50","unit":"m2/person","basis":"reported","context":"High light; 35-40 with insects","sources":["src-johnson2021"]},{"id":"GN-10","label":"Optimised minimum crop area per person","value":"39.88-106.86","unit":"m2/person","basis":"calculated","context":"Wheat+potato vs exact macronutrient mix","sources":["src-kaschubek2021"]},{"id":"GN-11","label":"LED lighting energy for a full diet indoors","value":"167-208","unit":"kWh/person/day","basis":"calculated","context":"45 m2 x DLI 40-50 / 3.0 umol/J; even at 4.1 umol/J and 40 m2 = 108 kWh/day - about 7-14x a whole v4 energy-layer home","sources":["src-johnson2021","src-kusuma2020","src-anyground-energy-v4"]},{"id":"GN-12","label":"Lunar Palace 365 material closure","value":98.2,"unit":"%","basis":"measured","context":"370 days, 8 crew in two groups of 4, 58 m2 plant area (Wikipedia); plant production met crew plant-food needs; urine recovery 99.7%, solid waste 67% (bioRxiv preprint abstract). Total-diet share for LP365 not stated in abstract","sources":["src-fu2021","src-wiki-lp1"]},{"id":"GN-13","label":"Harvest robot average success (50 robots)","value":66,"unit":"%","basis":"measured","context":"Cycle time 33 s; none commercialised by 2014","sources":["src-bac2014"]},{"id":"GN-14","label":"SWEEPER success adapted vs normal crop","value":"61 / 18","unit":"%","basis":"measured","context":"24 s per fruit, ~50% logistics","sources":["src-arad2020"]},{"id":"GN-15","label":"AI vs grower net profit (AGC 2018)","value":"24.78 vs 21.18","unit":"EUR/m2","basis":"measured","context":"Cucumber, 4 months, 96 m2 compartments","sources":["src-hemming2019"]},{"id":"GN-16","label":"Spread Keihanna design throughput","value":30000,"unit":"heads/day","basis":"target","context":"~3 t/day; 50% less labour, 98% water recycling, 30% less LED energy (claimed); Fruitnet wording for water is 'recycling rate improved by 98%' (ambiguous). Operating status after 2022 not re-verified (spread.co.jp unreachable)","sources":["src-fruitnet-spread2017"]},{"id":"GN-17","label":"Capital lost in US/UK indoor-farm failures named here","value":">2,350","unit":"million USD raised","basis":"calculated","context":"Bowery >700 + Plenty ~1,000 + 80 Acres >350 + Monarch >=220 + Iron Ox 98 = >=2,368 (Monarch distressed, not closed); excludes AeroFarms, Kalera, Infarm, AppHarvest, Jones","sources":["src-agdive-bowery","src-agfunder-plenty","src-agfunder-80acres","src-tc-monarch","src-robotreport-ironox"]},{"id":"GN-18","label":"Jones Food JFC2 grow area","value":14448,"unit":"m2","basis":"reported","context":"Closed 7 Apr 2025 (61 redundancies) after opening 2024; capital floor GBP 42M = Ocado GBP 17M (2019) + GBP 25M round (Apr 2021), i.e. ~GBP 2,900 per m2 (calculated lower bound of capital, not capex)","sources":["src-agnav-jones"]},{"id":"GN-19","label":"BSF larvae bioconversion rate on restaurant waste","value":18.34,"unit":"% of substrate","basis":"measured","context":"Industrial scale, 14 days","sources":["src-bsf-insects2026"]},{"id":"GN-20","label":"Duckweed growth gain 50->150 umol/m2/s","value":"67-76","unit":"%","basis":"measured","context":"Lemna minor, Wolffiella hyalina","sources":["src-petersen2022"]},{"id":"GN-21","label":"Thorvald pesticide reduction","value":"70-100","unit":"%","basis":"claimed","context":"Strawberry and grapevine, UV-C at night","sources":["src-saga-site"]},{"id":"GN-22","label":"LaserWeeder G2 600 price","value":1.4,"unit":"million USD + annual fees","basis":"reported","context":"20 ft width","sources":["src-gai-carbon-g2"]},{"id":"GN-23","label":"Lettuce DLI plateau","value":"12.6-15.1","unit":"mol/m2/day","basis":"measured","context":"No significant weight gain from 12.6 to 15.1 while energy efficiency fell","sources":["src-yan2019"]},{"id":"GN-24","label":"Salad-greens area per person","value":0.61,"unit":"m2 tier area/person","basis":"calculated","context":"100 g/day x 365 / 60 kg/m2/yr (low end of Pennisi 2025 range; assumed intake)","sources":["src-pennisi2025","src-anyground-v3"]},{"id":"GN-25","label":"HATA-4 lighting load","value":9.2,"unit":"kWh/day","basis":"calculated","context":"6.62 m2 tier area x DLI 15 / 3.0 umol/J","sources":["src-anyground-v3","src-kusuma2020"]},{"id":"GN-26","label":"AGC 2018 winner electricity per kg cucumber","value":"3.59 vs 3.02 (growers)","unit":"kWh/kg","basis":"measured","context":"AI saved heat (2.49 vs 3.20 kWh/kg) and water but used more light","sources":["src-hemming2019"]},{"id":"NG-10","label":"FSMA Produce Safety Rule exemption threshold","value":25000,"unit":"USD average annual produce sales (3-yr)","basis":"reported","context":"Produce for personal or on-farm consumption is also exempt; qualified exemption under USD 500,000 food sales when most sales go to qualified end-users","sources":["src-fda-psr"]},{"id":"NG-11","label":"Naurvik Arctic container farm","value":"3 x 168","unit":"ft2 growing area (pods)","basis":"reported","context":"Gjoa Haven, Nunavut, since 2019; mostly wind and solar; 7 racks and six 50-gal UV-filtered tanks per pod; basil, strawberries, cherry tomatoes; no yield or cost published","sources":["src-vfd-naurvik"]},{"id":"NG-12","label":"Growcer farm-as-a-service price","value":"< 1,000","unit":"CAD per week","basis":"reported","context":"Growcer Fund (2025): farm, maintenance, support and financing spread over 5-10 years; Growcer bought Freight Farms assets in July 2025","sources":["src-vfd-growcer-2026"]}],"failures":[{"what":"Bowery Farming closed (Nov 2024)","why":">$700M equity plus a $150M KKR loan financing multi-site capex; softening premium demand; failed sale.","lesson_for_anyground":"Never finance farm modules with debt sized to a growth story; each HATA cassette must pay back on its own produce or avoided cost, sold as equipment not as a crop promise."},{"what":"Plenty Chapter 11 (Mar 2025, emerged May 2025 as a strawberry-only grower); Compton farm closed Dec 2024","why":"~$1B raised on plans experts call unachievable (watermelons, fruit trees indoors); rising energy prices and infrastructure costs; grower voice lost.","lesson_for_anyground":"Keep the crop list short (greens, herbs, cherry tomato, strawberry) and grower-led; calories go to daylight."},{"what":"80 Acres Farms and Infinite Acres wound down (Aug-Sep 2026)","why":"Could not raise capital after acquisitions; 'impatient capital and an accumulating debt burden'. The tech subsidiary died with the operator.","lesson_for_anyground":"Separate the hardware business from any farming operation; firmware and recipes must run without the vendor (local-first)."},{"what":"Jones Food Company administration (Apr 2025)","why":"High tech cost, UK energy prices, low produce prices; JFC2 14,448 m2 lasted ~1 year.","lesson_for_anyground":"Energy price exposure kills lit farms: pair every lit cassette with owned PV and schedule light to sun hours (HIKARI-DOKI)."},{"what":"AppHarvest Chapter 11 (Jul 2023)","why":"SPAC-funded 60-acre glasshouse; operating problems reported (mold, heat, broken equipment) and shareholder suits; greenhouses then sold to experienced growers.","lesson_for_anyground":"Assets are fine in expert hands - ship with a remote grower service and benchmark against AGC-style reference crops."},{"what":"Iron Ox shut down (2023)","why":"$98M raised for full-robot greenhouse; robots did logistics a conveyor could do; scale and cost unproven.","lesson_for_anyground":"Use robots only where coordinates are unknown or change; use passive rails/rollers for movement."},{"what":"Harvesting robots stalled for 30 years","why":"Average 66% success, 33 s/fruit; SWEEPER 18% in normal crops.","lesson_for_anyground":"Design the crop for the robot: fixed gutter heights, single trusses, cherry tomato on a fixed jo grid; accept human-in-loop picking until >90%."},{"what":"Monarch Tractor crisis (Nov 2025)","why":"Lost contract manufacturer; dealer lawsuit alleging autonomy did not work; pivot to licensing.","lesson_for_anyground":"Do not claim autonomy levels you cannot demonstrate on-site; publish the autonomy ladder level per module."},{"what":"Kalera, Infarm, Smallhold, Growing Underground failures (2023-2025)","why":"Capital-heavy distributed farms, service burden and commodity pricing (details partly unverified).","lesson_for_anyground":"A distributed farm network only works if service minutes per module are measured and capped (<=30 min/week target)."}],"interfaces":[{"with_layer":"energy","exchange":"kWh (largest deferrable load: HATA-4 ~9.2 kWh/day lighting), waste heat from LEDs and dehumidification","design_rule":"Schedule photoperiod by DLI into PV hours (energy-layer HIKARI-DOKI); never grow staple calories under LEDs; LED heat goes into the IRORI hot-water loop via a water-cooled fixture or heat pump."},{"with_layer":"water","exchange":"L of nutrient water in; transpired condensate out (~90%+ recoverable in sealed cassettes)","design_rule":"Every cassette returns its HVAC condensate to the water organ; nutrient solution is isolated per cassette so a Pythium outbreak cannot cross."},{"with_layer":"loop","exchange":"Crop residues, roots, spent substrate -> BSF/compost; urine-derived N/P -> nutrient stock (after assays)","design_rule":"Only plant residues go to KAMADO-B in the EU (food-waste substrate prohibited per 2026 study; legal check per market); recovered nutrients reach edible crops only after pathogen/pharmaceutical tests."},{"with_layer":"mind","exchange":"Images, climate data, set-points, harvest forecasts","design_rule":"Run the crop twin locally on the edge; cloud only aggregates fleet learning; publish an AGC-style reference crop per site."},{"with_layer":"care","exchange":"Fresh food to guests/residents; human minutes for picking and inspection","design_rule":"Guest-facing harvest is a feature (hotel picking ritual) where robots are weak; robots do the night work (UV, scouting, logistics)."},{"with_layer":"build","exchange":"Cassettes, rails, carriers, glazing fabricated to the 910 mm jo pitch","design_rule":"Carriers are half-jo (910 x 455 mm) trays so every station, rail and rack uses one coordinate system."},{"with_layer":"structure","exchange":"Ridge rails for TSURU, glazing for YOSHI-6G, floor loads (HATA-4 380 kg)","design_rule":"Fruit walls hang from ridge rails at fixed heights so the harvest arm and UV bar share one rail."}],"autonomy_ladder":[{"level":"L0","description":"Manual gardening/hydroponics; humans sow, feed, inspect, harvest","human_minutes_per_week":"300+ per cassette (estimate)","enabling_tech":"Timers, hand tools"},{"level":"L1","description":"Automated climate, light and fertigation set-points; humans do all plant handling","human_minutes_per_week":"120-180 (estimate)","enabling_tech":"Climate computer, EC/pH dosing, LED drivers"},{"level":"L2","description":"Plants move on carriers through fixed stations (seeding, spacing, wash); humans harvest and fix jams","human_minutes_per_week":"60-90 (estimate)","enabling_tech":"Tray shuttles/conveyors (Spread, IGS class)"},{"level":"L3","description":"Crop twin sets climate and predicts harvest; cameras flag disease; whole-tray greens harvest automated; human picks fruit and handles exceptions","human_minutes_per_week":"30-45 (v3 HATA-4 target <=30)","enabling_tech":"MPC/RL twin (AGC-proven), fixed cameras, tray cutter"},{"level":"L4","description":"Robots also do UV-C protection, pollination and fruit picking at >90% success in a crop designed for them; human visits weekly for swaps and tasting","human_minutes_per_week":"10-20 (target)","enabling_tech":"Rail arm on fixed fruit wall, night UV-C bar, cartridge swaps by TSURU"},{"level":"L5","description":"Sealed bioregenerative loop with protein (insects/duckweed) and residue recycling, self-diagnosing, months unattended","human_minutes_per_week":"<10 (speculative)","enabling_tech":"Lunar Palace/MELiSSA-class closure; not demonstrated without resident crew"}],"orijo_design":{"recommended_stack":[{"subsystem":"GROW-S1","choice":"Daylight YOSHI-6G vault for fruiting crops and staples; LED HATA-4 cassettes only for greens/herbs/strawberry","why":"Purchased electricity per kg is 1.2-3.5x lower with sunlight (Graamans) and a full LED diet would need 108-208 kWh/person/day."},{"subsystem":"GROW-S2","choice":"NFT/ebb-flow per cassette with closed EC/pH and condensate return; isolated solution per cassette","why":"Mature, 98% recycling reported, and failure isolation limits disease spread."},{"subsystem":"GROW-S3","choice":"Local MPC crop twin with DLI targets, benchmarked against a human-run reference tray each season","why":"AGC shows AI control can match or beat growers; the reference keeps the claim honest."},{"subsystem":"GROW-S4","choice":"Passive roller lanes + one linear shuttle per cassette on half-jo trays (v3 M07)","why":"Conveyors beat AMRs for repeatable moves (Iron Ox lesson); jo pitch gives every station a known coordinate."},{"subsystem":"GROW-S5","choice":"Human-in-loop fruit picking with robotic assist; bees/brush for strawberry; rail arm only after >90% bench success","why":"Field success rates are 18-66%; design the crop first."},{"subsystem":"GROW-S6","choice":"Night UV-C bar and camera on the ridge rail shared with TSURU","why":"Thorvald shows UV-C + scouting is the robot task that pays first."},{"subsystem":"GROW-S7","choice":"Outdoor beds: FarmBot-class gantry only for home/hotel kitchen gardens; rent field robots","why":"Field robots are capex for large farms; ORIJO sites are small."},{"subsystem":"GROW-S8","choice":"KAMADO-B for plant residues; duckweed UKI-P only where market approval exists; mushrooms on spent substrate as low-energy protein (no study read here)","why":"BSF converts 11-26% of substrate; duckweed needs LED energy."}],"new_mechanisms_or_modules":[{"name":"HI-NO-WAKE (sun split)","what":"A planning rule and configurator check that assigns each crop to daylight vault, LED cassette or outdoor bed by kWh per kg of nutrient delivered","how_it_works":"For each crop the configurator computes LED kWh = DLI x days x area / (PPE x 3.6) and compares it with the site's PV surplus; crops whose LED energy exceeds a threshold (for example >15 kWh/kg or >1 kWh per 1,000 kcal) are forced into the YOSHI-6G vault or outdoors. The output is a crop map per typology plus a one-line statement of what share of the diet the site can honestly supply.","prototype_12mo":{"build":"Spreadsheet/JS module in the configurator using v3 crop library and site PSH data","bom_usd":"0-2,000 (software time only; estimate)","test":"Back-test on EDEN ISS, Lunar Palace and two commercial VF published figures","pass":"Predicted kWh/kg within +/-25% of the published values for 3 of 4 cases","kill":"If error >50%, fall back to published lookup tables"}},{"name":"KAGO-MICHI (carrier path)","what":"Half-jo tray carrier with passive rollers, RFID and fiducial, and a single stationary vision + cutter cell at the cassette end","how_it_works":"Trays move by gravity-assisted rollers and one linear shuttle; at the end cell a fixed camera images each tray under controlled light, the twin decides harvest/space/wait, and a band cutter harvests whole trays of greens. Because the camera and cutter never move, calibration is one-time and the only moving robot is a shuttle.","prototype_12mo":{"build":"One HATA-4 tier (1.66 m2) with 8 trays, shuttle, fixed camera and cutter","bom_usd":"6,000-12,000 (estimate)","test":"12 lettuce cycles, logging jams, harvest timing error and human minutes","pass":"<1 jam per 100 tray moves; <=10 human min per tier per week; yield >=48 kg/m2/yr equivalent","kill":">5 jams per 100 moves or yield <30 kg/m2/yr"}},{"name":"YOAKE-UV (pre-dawn UV bar)","what":"UV-C lamp bar plus RGB/NIR camera that rides the YOSHI-6G ridge rail at night","how_it_works":"At night photolyase repair is inactive, so a UV-C dose delivered by a slow rail pass suppresses powdery mildew on tomato/strawberry walls; the same pass counts flowers and fruit to feed the twin. Interlocks keep it off when the room PIR detects people.","prototype_12mo":{"build":"3 m rail segment with UV-C bar, dosimeter and camera over strawberry tabletop","bom_usd":"3,000-7,000 (estimate)","test":"Paired bays, treated vs untreated, mildew incidence and fruit count accuracy over one season","pass":">=50% mildew reduction and fruit count error <15%","kill":"No significant mildew effect or leaf scorch"}},{"name":"TSUBO-KABE (designed fruit wall)","what":"Cherry tomato / strawberry wall where every truss hangs at a fixed jo coordinate so a rail arm can pick","how_it_works":"Plants grow in rigid gutters at fixed heights; trusses are guided by clips onto a 910 mm grid plane, removing the leaf occlusion that drove SWEEPER from 61% to 18%. Humans pick until the arm proves >90% on this wall.","prototype_12mo":{"build":"Two 3.64 m gutters in a YOSHI-6G bay, clip guides, off-the-shelf cobot on a rail","bom_usd":"25,000-45,000 (estimate)","test":"Weekly picking sessions over 6 months, success rate and s/fruit","pass":">=85% success, <=20 s/fruit on the designed wall","kill":"<60% success after 6 months - keep wall for human picking"}},{"name":"MUSHI-DAI (insect bench)","what":"KAMADO-B integration test fed only crop residues, measuring larvae and frass returned","how_it_works":"Residues from cassettes feed BSF larvae; frass is assayed and returned to outdoor beds; larvae go to fish/poultry feed where legal.","prototype_12mo":{"build":"0.91 x 0.91 m bin with temperature, CO2/NH3 sensors and weighing","bom_usd":"1,500-4,000 (estimate)","test":"12 batches on plant residues","pass":"Bioconversion >=10% of substrate; no odour complaints; frass passes pathogen assay","kill":"<5% bioconversion or persistent odour/fly escape"}}],"sizing_reference":{"home_4p":{"salad_greens_target":"4 x 100 g/day = 2.8 kg/week (assumed intake)","tier_area_needed":"2.4 m2 at 60 kg/m2/yr","module":"1 HATA-4 (6.62 m2 tier area, 6.1-8.9 kg/week) covers greens with surplus, or BYOBU-G for herbs only","lighting_kwh_day":"9.2 for a full HATA-4 at DLI 15; ~3.4 if only 2.4 m2 lit","full_diet":"160-200 m2 high-light crop area (40-50 m2/person) - not feasible under LED (670-830 kWh/day); only outdoor/greenhouse partial supply","formula":"area = intake_kg_yr / yield_kg_m2_yr; E_light = DLI x 365 x area / (PPE x 3.6) kWh/yr","basis":"calculated from src-johnson2021, src-kusuma2020, v3 HATA-4"},"hotel_6key":{"guests":"12 (assumed full occupancy)","greens":"12 x 50 g/day = 219 kg/yr -> 3.7 m2 tier area -> 1 HATA-4","cherry_tomato":"12 x 50 g/day = 219 kg/yr -> 11.5-12.9 m2 at EDEN ISS LED tomato 17-19 kg/m2/yr (worst case); fits in one YOSHI-6G (39.7 m2) with room for strawberry and herbs","lighting_kwh_day":"~9 (HATA-4) + vault top-up in winter","formula":"same as home; tomato yield from EDEN ISS 0.046-0.052 kg/m2/day","basis":"calculated (intake assumed)"},"farm_module":{"HATA-4":"4 tiers x 0.91 x 1.82 m = 6.62 m2; 318-464 kg/yr; lighting 3,358 kWh/yr (9.2 kWh/day); 7.2-10.6 kWh/kg lighting only","YOSHI-6G":"39.7 m2 daylight; cucumber at EDEN ISS rate would be 117 kg/m2/yr (LED, sealed) - daylight yields depend on site and are not claimed","people_fed_greens":"one HATA-4 covers greens for about 9-13 people at 100 g/day","formula":"yield = A_tier x Y; people = yield / 36.5","basis":"calculated from v3 HATA-4 and src-zabel2020"}}},"open_problems":["No public, audited kWh/kg, labour h/kg and capex/m2 data from a profitable vertical farm; most numbers are LCA models or company claims.","Labour hours per kg for automated PFALs are rarely published; Spread's 50% reduction is relative, not absolute.","Harvest robots remain below 70% success in normal crops; unknown whether designed fruit walls reach >90% at acceptable s/fruit.","Calorie crops under electric light are physically energy-prohibitive (100+ kWh/person/day); full-diet autonomy needs daylight area or space-grade budgets.","Disease management in shared nutrient loops (Pythium) at L4-L5 without a grower is unproven.","Regulation of insect feed substrates (EU ban on food waste) and of duckweed/Wolffia as human food varies by market.","Long-term (multi-year) unattended operation has no demonstration: Lunar Palace and EDEN ISS had resident crews.","Yield-per-photon improvements (far-red, cultivars bred for VFs) are the remaining energy lever but cultivar availability is limited.","Arctic container farms (Naurvik since 2019, Growcer) publish no yield, kWh/kg or cost data. [gaps-2026-10-29]"],"sources":[{"id":"src-zabel2020","title":"Zabel et al. (2020) Biomass Production of the EDEN ISS Space Greenhouse in Antarctica During the 2018 Experiment Phase, Front. Plant Sci. 11:656","url":"https://doi.org/10.3389/fpls.2020.00656","type":"paper","accessed":"2026-10-29","read_primary":true},{"id":"src-fu2021","title":"Fu et al. (2021) Establishment of a closed artificial ecosystem to ensure human long-term survival on the moon (Lunar Palace 365), bioRxiv 2021.01.12.426282 [bioRxiv preprint]","url":"https://doi.org/10.1101/2021.01.12.426282","type":"paper","accessed":"2026-10-29","read_primary":true},{"id":"src-wiki-lp1","title":"Wikipedia: Yuegong-1 (Lunar Palace 1) facility description","url":"https://en.wikipedia.org/wiki/Lunar_Palace_1","type":"agency","accessed":"2026-10-29","read_primary":true},{"id":"src-johnson2021","title":"Johnson, ..., Wheeler (2021) Supplemental Food Production With Plants: A Review of NASA Research, Front. Astron. Space Sci. 8:734343","url":"https://doi.org/10.3389/fspas.2021.734343","type":"paper","accessed":"2026-10-29","read_primary":true},{"id":"src-monje2018","title":"Monje et al. (2018) Validation of the Advanced Plant Habitat Facility on ISS, NASA NTRS 20180006722","url":"https://ntrs.nasa.gov/citations/20180006722","type":"agency","accessed":"2026-10-29","read_primary":true},{"id":"src-kusuma2020","title":"Kusuma, Pattison & Bugbee (2020) From physics to fixtures to food: current and potential LED efficacy, Hortic. Res. 7:56","url":"https://doi.org/10.1038/s41438-020-0283-7","type":"paper","accessed":"2026-10-29","read_primary":true},{"id":"src-graamans2018","title":"Graamans et al. (2018) Plant factories versus greenhouses: Comparison of resource use efficiency, Agric. Syst. 160:31-43","url":"https://doi.org/10.1016/j.agsy.2017.11.003","type":"paper","accessed":"2026-10-29","read_primary":true},{"id":"src-bac2014","title":"Bac, van Henten, Hemming & Edan (2014) Harvesting Robots for High-value Crops: State-of-the-art Review and Challenges Ahead, J. Field Robotics 31(6)","url":"https://doi.org/10.1002/rob.21525","type":"paper","accessed":"2026-10-29","read_primary":true},{"id":"src-arad2020","title":"Arad et al. (2020) Development of a sweet pepper harvesting robot (SWEEPER), J. Field Robotics","url":"https://doi.org/10.1002/rob.21937","type":"paper","accessed":"2026-10-29","read_primary":true},{"id":"src-bac2017","title":"Bac et al. (2017) Performance Evaluation of a Harvesting Robot for Sweet Pepper, J. Field Robotics","url":"https://doi.org/10.1002/rob.21709","type":"paper","accessed":"2026-10-29","read_primary":true},{"id":"src-hemming2019","title":"Hemming et al. (2019) Remote Control of Greenhouse Vegetable Production with Artificial Intelligence - Greenhouse Climate, Irrigation, and Crop Production, Sensors 19(8):1807","url":"https://doi.org/10.3390/s19081807","type":"paper","accessed":"2026-10-29","read_primary":true},{"id":"src-agc3-2022","title":"Hortidaily (4 Jul 2022) Focus on crop temperature brings victory to Koala in Autonomous Greenhouse Challenge","url":"https://www.hortidaily.com/article/9441502/focus-on-crop-temperature-brings-victory-to-koala-in-autonomous-greenhouse-challenge/","type":"news","accessed":"2026-10-29","read_primary":true},{"id":"src-vandelden2021","title":"van Delden et al. (2021) Current status and future challenges in implementing and upscaling vertical farming systems, Nature Food 2:944-956","url":"https://doi.org/10.1038/s43016-021-00402-w","type":"paper","accessed":"2026-10-29","read_primary":false},{"id":"src-kozai2019","title":"Kozai (2019) Towards sustainable plant factories with artificial lighting (PFALs) for achieving SDGs, IJABE 12(5):28-37","url":"https://doi.org/10.25165/j.ijabe.20191205.5177","type":"paper","accessed":"2026-10-29","read_primary":true},{"id":"src-kozai-slide2021","title":"Kozai (2021) Plant factory with artificial lighting (PFAL): its significance (lecture slides, Chiba University repository; seen as search snippet only)","url":"https://opac.ll.chiba-u.jp/da/curator/900121225/kozai_slide_20210520.pdf","type":"paper","accessed":"2026-10-29","read_primary":false},{"id":"src-kaschubek2021","title":"Kaschubek (2021) Optimized crop growth area composition for long duration spaceflight, Life Sci. Space Res.","url":"https://doi.org/10.1016/j.lssr.2021.05.005","type":"paper","accessed":"2026-10-29","read_primary":true},{"id":"src-yan2019","title":"Yan, He, Niu et al. (2019) Growth, nutritional quality, and energy use efficiency of hydroponic lettuce as influenced by DLI, HortScience","url":"https://doi.org/10.21273/HORTSCI14236-19","type":"paper","accessed":"2026-10-29","read_primary":true},{"id":"src-martin2024","title":"Martin et al. (2024) Environmental life cycle assessment of an on-site modular cabinet vertical farm, Front. Sustain. Food Syst.","url":"https://doi.org/10.3389/fsufs.2024.1403580","type":"paper","accessed":"2026-10-29","read_primary":true},{"id":"src-lca-review-preprint","title":"Quantitative review of environmental life cycle assessments of vertical farms ... energy outlook 2050 (Research Square preprint; numbers from Google Scholar snippet only)","url":"https://www.researchsquare.com/article/rs-10962166/latest","type":"paper","accessed":"2026-10-29","read_primary":false},{"id":"src-vf-energy-model2024","title":"Keyvan & Roshandel (2024) An integrated Energy-Yield-Cost model to evaluate clean energy solutions for vertical farms, Comput. Electron. Agric. (DOI 10.1016/j.compag.2024.108809; full text 403, 7-10 kWh/kg not confirmed)","url":"https://www.sciencedirect.com/science/article/pii/S016816992400200X","type":"paper","accessed":"2026-10-29","read_primary":false},{"id":"src-petersen2022","title":"Petersen et al. 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(2024) Design, Development, Integration, and Field Evaluation of a Ridge-Planting Strawberry Harvesting Robot, Agriculture 14:2126","url":"https://doi.org/10.3390/agriculture14122126","type":"paper","accessed":"2026-10-29","read_primary":true},{"id":"src-agfunder-80acres","title":"AgFunderNews (3 Aug 2026) Indoor ag heavyweight 80 Acres Farms to cease operations","url":"https://agfundernews.com/indoor-ag-heavyweight-80-acres-farms-to-cease-operations","type":"news","accessed":"2026-10-29","read_primary":true},{"id":"src-hortidaily-infiniteacres","title":"Hortidaily (Sep 2026) Infinite Acres declared bankrupt in the Netherlands","url":"https://www.hortidaily.com/article/9872227/infinite-acres-declared-bankrupt-in-the-netherlands/","type":"news","accessed":"2026-10-29","read_primary":true},{"id":"src-agdive-bowery","title":"Agriculture Dive (7 Nov 2024) Celebrity-backed indoor farming company Bowery closes, lays off 187 workers","url":"https://www.agriculturedive.com/news/celebrity-backed-indoor-farming-company-bowery-closes-lays-off-187-workers/732282/","type":"news","accessed":"2026-10-29","read_primary":true},{"id":"src-agfunder-plenty","title":"AgFunderNews (27 Mar 2025) Plenty, an autopsy: It promised the moon, but plants don't run on pitch decks","url":"https://agfundernews.com/plenty-has-an-opportunity-to-succeed-say-some-vertical-farming-experts-what-happens-next","type":"news","accessed":"2026-10-29","read_primary":true},{"id":"src-conversation2025","title":"The Conversation (2025) Five reasons why vertical farming is still the future, despite all the recent business failures","url":"https://theconversation.com/five-reasons-why-vertical-farming-is-still-the-future-despite-all-the-recent-business-failures-248270","type":"news","accessed":"2026-10-29","read_primary":true},{"id":"src-agnav-jones","title":"AgNavigator (14 Apr 2025) Vertical farmer Jones Food Company enters administration","url":"https://www.agnavigator.com/Article/2025/04/14/vertical-farmer-jones-food-company-enters-administration/","type":"news","accessed":"2026-10-29","read_primary":true},{"id":"src-agfunder-aerofarms","title":"AgFunderNews (18 Sep 2023) AeroFarms emerges from Ch. 11 with new CEO, focus on VA farm","url":"https://agfundernews.com/aerofarms-emerges-from-ch-11-as-its-virginia-based-indoor-farm-nears-profitability","type":"news","accessed":"2026-10-29","read_primary":true},{"id":"src-packer-kalera","title":"The Packer (5 Apr 2023) Vertical farmer Kalera files for Chapter 11 bankruptcy (headline/date only; page blocked)","url":"https://www.thepacker.com/news/packer-tech/vertical-farmer-kalera-files-chapter-11-bankruptcy","type":"news","accessed":"2026-10-29","read_primary":false},{"id":"src-bizj-80acres-kalera","title":"Business Journals (4 Mar 2025) 80 Acres acquires three indoor farms from competitor (headline/date only)","url":"https://www.bizjournals.com/cincinnati/inno/stories/news/2025/03/04/80-acres-farms-buys-kalera-denver-atlanta-houston.html","type":"news","accessed":"2026-10-29","read_primary":false},{"id":"src-wiki-appharvest","title":"Wikipedia: AppHarvest","url":"https://en.wikipedia.org/wiki/AppHarvest","type":"news","accessed":"2026-10-29","read_primary":true},{"id":"src-agfunder-infarm","title":"AgFunderNews (28 Sep 2023) Infarm declared bankrupt; rumored $50m raise from Middle East (headline/date only; page 404 on fetch)","url":"https://agfundernews.com/infarm-declared-bankrupt-rumored-to-have-raised-50m-from-middle-east-say-industry-sources","type":"news","accessed":"2026-10-29","read_primary":false},{"id":"src-robotreport-ironox","title":"The Robot Report (2 Nov 2022) Reports of layoffs at Iron Ox","url":"https://www.therobotreport.com/reports-of-layoffs-at-iron-ox/","type":"news","accessed":"2026-10-29","read_primary":true},{"id":"src-bizj-ironox","title":"Austin Business Journal (24 May 2023) After shutdown of robotic farming co. 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description claims 450,000 weeds/hour)","url":"https://www.youtube.com/watch?v=1fOMy7PcSgg","type":"video","accessed":"2026-10-29","read_primary":false},{"id":"src-tc-monarch","title":"TechCrunch (19 Nov 2025) Monarch Tractor preps for layoffs and warns employees it may shut down","url":"https://techcrunch.com/2025/11/19/monarch-tractor-preps-for-layoffs-and-warns-employees-it-may-shut-down/","type":"news","accessed":"2026-10-29","read_primary":true},{"id":"src-fwi-xaver","title":"Farmers Weekly (Oct 2017) Fendt proposes swarm robots for corn planting","url":"https://www.fwi.co.uk/machinery/technology/fendt-proposes-swarm-robots-corn-planting","type":"news","accessed":"2026-10-29","read_primary":true},{"id":"src-xaver-dealer","title":"Dealer page snippet (Bas Agro, 2024): Xaver 20 L seed hopper sows about 0.5 ha at 90,000 seeds/ha (snippet only)","url":"https://www.google.com/search?q=Bas+Agro+Sowing+robot+Fendt+Xaver","type":"company","accessed":"2026-10-29","read_primary":false},{"id":"src-farmbot-docs","title":"FarmBot Genesis v1.6 documentation (tool spec; open-source hardware)","url":"https://genesis.farm.bot/v1.6/extras/mods/tool-spec.html","type":"company","accessed":"2026-10-29","read_primary":false},{"id":"src-fourgrowers","title":"Four Growers / Syngenta collaboration on robotic tomato harvesting (Seed World, 18 Apr 2023) and GR-series snippets","url":"https://www.seedworld.com/us/2023/04/18/syngenta-and-four-growers-inc-collaborate-on-robotic-tomato-harvesting","type":"news","accessed":"2026-10-29","read_primary":false},{"id":"src-dogtooth-snippet","title":"Search snippets on Dogtooth strawberry robot (unverified third-party pages: 'up to 200 kg per day')","url":"https://www.google.com/search?q=Dogtooth+Technologies+strawberry+robot+picking+rate","type":"company","accessed":"2026-10-29","read_primary":false},{"id":"src-agrist-snippet","title":"Search snippet: Agrist L robot picks bell peppers under leaf cover (unverified)","url":"https://www.google.com/search?q=Agrist+cucumber+pepper+harvesting+robot+hanging","type":"company","accessed":"2026-10-29","read_primary":false},{"id":"src-igs-snippet","title":"Search snippets: IGS raised $28.5M (Jan 2024), 12 m Growth Tower (unverified)","url":"https://www.google.com/search?q=Intelligent+Growth+Solutions+energy+kWh+per+kg+tower","type":"news","accessed":"2026-10-29","read_primary":false},{"id":"src-agfunder-smallhold","title":"AgFunderNews (20 Feb 2024) Mushroom vertical farming company Smallhold files for bankruptcy (headline/date only)","url":"https://agfundernews.com/mushroom-vertical-farming-company-smallhold-files-for-bankruptcy-firm-in-worse-financial-shape-than-previously-disclosed","type":"news","accessed":"2026-10-29","read_primary":false},{"id":"src-pat-us11877540","title":"US11877540B2 Tray and Trellis System for an Automated Farm with Robots Working on Plants","url":"https://patents.google.com/patent/US11877540B2/en","type":"patent","accessed":"2026-10-29","read_primary":false},{"id":"src-pat-us20210204490","title":"US20210204490A1 Automated Farm with Robots Working on Plants (cloning room, nursery AS/RS, conveyor trays)","url":"https://patents.google.com/patent/US20210204490A1/en","type":"patent","accessed":"2026-10-29","read_primary":false},{"id":"src-pat-kr102728964","title":"KR102728964B1 Vertical cultivation tower conveyor system for controlled environment farming","url":"https://patents.google.com/patent/KR102728964B1/en","type":"patent","accessed":"2026-10-29","read_primary":false},{"id":"src-pat-wo2022231434","title":"WO2022231434A1 Robotic plant crop picker end effector (enclosing compartment)","url":"https://patents.google.com/patent/WO2022231434A1/en","type":"patent","accessed":"2026-10-29","read_primary":false},{"id":"src-pat-kr20260081974","title":"KR20260081974A Harvester separating vegetables from growing plates in a multi-tier plant factory","url":"https://patents.google.com/patent/KR20260081974A/en","type":"patent","accessed":"2026-10-29","read_primary":false},{"id":"src-anyground-v3","title":"Anyground v3 concept.json (M07 HATA loom, HATA-4, UKI-P, KAMADO-B, YOSHI-6G, M09 TSURU)","url":"research/v3/concept.json","type":"standard","accessed":"2026-10-29","read_primary":true},{"id":"src-anyground-energy-v4","title":"Anyground v4 energy layer dossier (HIKARI-DOKI photoperiod-to-sun scheduler, home sizing)","url":"research/v4/layers/energy.json","type":"standard","accessed":"2026-10-29","read_primary":true},{"id":"src-pennisi2025","url":"https://doi.org/10.1007/s13593-025-01055-w","title":"Pennisi, Gianquinto, Marcelis, Martin et al. (2025) Vertical farming: productivity, environmental impact, and resource use. A review, Agron. Sustain. Dev. (abstract: lettuce 60-105 kg FW/m2/yr; 0.08-0.13 kg FW/kWh)"},{"id":"src-hortidaily-plenty2025","url":"https://www.hortidaily.com/article/9717222/from-billion-dollar-backing-to-bankruptcy-plenty-restructures-for-a-leaner-focused-future/","title":"Hortidaily (25 Mar 2025) From billion-dollar backing to bankruptcy: Plenty restructures (about $940M raised; rising energy prices and infrastructure costs; Richmond VA and Laramie WY continue)"},{"id":"src-elevenflo-plenty","url":"https://elevenflo.com/blog/plenty-unlimited-bankruptcy","title":"ElevenFlo (Jan 2026) Plenty Unlimited reorganizes in 53 days: petition 23 Mar 2025, plan confirmed 15 May 2025, emerged 29 May 2025 with Richmond strawberry farm (secondary source)"},{"id":"src-packer-plenty-compton","url":"https://www.thepacker.com/news/industry/plenty-closes-compton-leafy-greens-farm-focus-strawberries","title":"The Packer (24 Dec 2024) Plenty closes Compton leafy greens farm to focus on strawberries (headline seen in news search; page returned 403, body not read)"},{"id":"src-aerofarms-site","url":"https://www.aerofarms.com/","title":"AeroFarms official site (copyright 2026): microgreens sold via Whole Foods, Harris Teeter, Costco; states acquisition by an affiliate of Palm Ventures (date not shown)"},{"id":"src-pat-jp7105384","url":"https://patents.google.com/patent/JP7105384B2/en","title":"JP7105384B2 Cultivation tower alignment mechanism, MJNN LLC, priority 2019-05-13, granted 2022-07-22"},{"id":"src-fda-psr","title":"US FDA - FSMA Final Rule on Produce Safety (current as of 13 Nov 2024)","url":"https://www.fda.gov/food/food-safety-modernization-act-fsma/fsma-final-rule-produce-safety","type":"regulator","accessed":"2026-10-29","read_primary":true,"added_by":"gaps-2026-10-29"},{"id":"src-fda-preharvest","title":"US FDA - FSMA Final Rule on Pre-Harvest Agricultural Water (effective 5 Jul 2024)","url":"https://www.fda.gov/food/food-safety-modernization-act-fsma/fsma-final-rule-pre-harvest-agricultural-water","type":"regulator","accessed":"2026-10-29","read_primary":true,"added_by":"gaps-2026-10-29"},{"id":"src-riggio2019","title":"Riggio, Jones, Gibson (2019) Risk of Human Pathogen Internalization in Leafy Vegetables During Lab-Scale Hydroponic Cultivation, Horticulturae 5(1):25 (abstract via Elicit; MDPI 403)","url":"https://doi.org/10.3390/HORTICULTURAE5010025","type":"paper","accessed":"2026-10-29","read_primary":false,"added_by":"gaps-2026-10-29"},{"id":"src-vfd-naurvik","title":"Vertical Farm Daily (7 Jul 2025) Inside an arctic greenhouse (Naurvik, Gjoa Haven, Nunavut)","url":"https://www.verticalfarmdaily.com/article/9744857/inside-an-arctic-greenhouse/","type":"news","accessed":"2026-10-29","read_primary":true,"added_by":"gaps-2026-10-29"},{"id":"src-vfd-growcer-2026","title":"Vertical Farm Daily (8 Jun 2026) Rising food prices drives demand for container farming in Canada (Growcer)","url":"https://www.verticalfarmdaily.com/article/9842307/rising-food-prices-drives-demand-for-container-farming-in-canada/","type":"news","accessed":"2026-10-29","read_primary":true,"added_by":"gaps-2026-10-29"}],"verification":{"date":"2026-10-29","method":"Adversarial check of load-bearing claims against DOIs/primary pages via WebFetch, OpenAlex and EuropePMC abstracts/full text, plus one Elicit query and two SerpAPI queries (grow layer serp budget now 47/48).","checked":24,"confirmed":15,"confirmed_items":["GN-01/02 Kusuma 2020 (3.0 blue+red, 2.78 white+red measured; limits 3.4/4.1 calculated)","GN-03 Graamans 2018 247 vs 70/111/182/211 kWhe/kg DW","GN-08 EDEN ISS cucumber 0.321 kg/m2/d","GN-09 Johnson 2021 40-50 m2/person","GN-10 Kaschubek 2021 39.88/106.86 m2","GN-13 Bac 2014 66%, 33 s, 50 robots none commercialised","GN-14 Arad 2020 61/18%, 24 s, ~50% logistics","GN-15/26 Hemming 2019 Table 1-2 (24.78 vs 21.18 EUR/m2; 3.59 vs 3.02 kWh el, 2.49 vs 3.20 kWh heat, 4.91 vs 5.52 L per kg)","GN-19 BSF 18.34% vs 11.02%","GN-20 Petersen 2022 RGR +67/+76%","GN-21 Saga 70-100% (company claim) and ~1,300 acres","GN-22 LaserWeeder G2 600 $1.4M + support fees","GN-23 Yan 2019 DLI 12.60 vs 15.12 no significant difference","80 Acres wind-down 3 Aug 2026 and Infinite Acres bankruptcy 8 Sep 2026; Bowery Nov 2024 (>$700M, $2.3B, $150M KKR, 187 layoffs, ABC); Jones administration Apr 2025 (14,448 m2); Oishii $150M first close, $370M total, Tortuga acquisition; Monarch Nov 2025 crisis (>=220M, Foxconn loss, Burks lawsuit, >70% licensing); Iron Ox $98M; AppHarvest Ch.11 Jul 2023; Smallhold filing 18 Feb 2024 (Ch.11 provisions); AGC 2022 Koala 5.93 EUR/m2; Plenty $1.9B to <$15M (The Conversation)","Patents KR102728964B1, JP7105384B2 (both MJNN LLC), US11877540B2 resolve and match; internal formulas GN-04, GN-11, GN-24, GN-25 recompute correctly; all source ids resolve, none unused"],"corrected":[{"item":"GN-07 EDEN ISS yield","was":"21.4 kg/m2/yr (abstract 27.4 called inconsistent)","now":"21.4 kg/m2 per 286-day season = 27.4 kg/m2/yr annualised; abstract is consistent","source":"src-zabel2020"},{"item":"GN-17 capital in named failures","was":">2,400 million USD","now":">2,350 million USD (named floors sum to 2,368; Monarch not closed)","source":"src-agdive-bowery, src-agfunder-plenty, src-agfunder-80acres, src-tc-monarch, src-robotreport-ironox"},{"item":"GN-12 / PRJ-lp1 diet share","was":"Lunar Palace 365 ~55% of total diet","now":"55% is Wikipedia's design figure for the 3-crew 2014 configuration; LP365 abstract only says plant production met crew plant-food needs; LP365 total-diet share unverified","source":"src-fu2021, src-wiki-lp1"},{"item":"PRJ-plenty status and causes","was":"status pilot; failure cause 'California energy costs'","now":"status active (emerged from Ch.11 29 May 2025, Richmond VA strawberry farm; 2026 operations not independently confirmed); cause: rising energy prices and infrastructure costs (no California-specific source)","source":"src-elevenflo-plenty, src-hortidaily-plenty2025"},{"item":"PRJ-aerofarms status","was":"pilot","now":"active (company site 2026 shows retail microgreens and an acquisition by a Palm Ventures affiliate; date not verified)","source":"src-aerofarms-site"},{"item":"Yu 2024 strawberry robot success","was":"49.3 % (no condition)","now":"49.3% after flower and fruit thinning; 30.23% untrimmed","source":"src-yu2024"},{"item":"GN-05 VF energy intensity","was":"10-39 kWh/kg (preprint snippet) + 7-10 (model, unverified)","now":"7.7-12.5 kWh/kg fresh lettuce (calculated from Pennisi 2025 review 0.08-0.13 kg FW/kWh); 10-39 and 7-10 kept as unverified","source":"src-pennisi2025"},{"item":"GN-06 VF yield","was":"median 62 kg/m2/yr (snippet only)","now":"60-105 kg FW/m2/yr common average (Pennisi 2025 review); median 62 unverified","source":"src-pennisi2025"}],"removed":[],"unverifiable":["GN-05 secondary values 10-39 kWh/kg (Research Square preprint) and 7-10 kWh/kg (Keyvan & Roshandel 2024): source bodies not retrievable","GN-06 median 62 kg/m2/yr (preprint snippet)","PRJ-spread status 'active' beyond 2022 (spread.co.jp connection refused; one SerpAPI query returned irrelevant results)","PRJ-plenty 2026 operating status (only secondary source ElevenFlo; no 2026 primary news)","PRJ-dogtooth, PRJ-agrist, PRJ-igs specs (search snippets only, already labelled unverified in file)","PRJ-infarm details (AgFunder URL now returns 404)","Iron Ox 2023 shutdown and Sensei Farms purchase (bizjournals not fetchable)","Kalera Ch.11 Apr 2023 (The Packer returned 403)","G2 600 kill rate 450,000 weeds/h (YouTube description, claimed only)"],"notes":["GN-12 source src-fu2021 is a bioRxiv preprint (not peer-reviewed as cited).","US11877540B2 concerns cannabis/hemp trellis on an automated farm, granted to individual inventors - relevant as tray/trellis reference only.","TRLs reviewed: no overstatement found that warrants a change; COMMERCIAL 9 for sole-source PFAL lighting and UV-C rover rests on commercial operation, not profitability."],"verdict":"Mostly sound. Paper numbers checked against abstracts/full text were accurate; errors were in interpretation (EDEN ISS per-season vs per-year, LP365 55% diet share), arithmetic (capital sum overstated by ~1.5%), stale statuses (Plenty and AeroFarms are operating, not pilots) and one unsourced cause (California energy). Two preprint/snippet LCA numbers replaced with a peer-reviewed 2025 review. No fabricated DOIs or sources found."},"certification":[{"id":"C-G1","regime":"FSMA Produce Safety Rule (21 CFR 112) + 2024 pre-harvest water rule","jurisdiction":"USA","status":"in force; pre-harvest water compliance 2025-2027 by farm size","applies_to":"Farms selling produce; exempt <= USD 25,000/yr or personal/on-farm consumption","requirement":"Worker hygiene, water, equipment and building standards; pre-harvest water by systems-based assessment","implication_for_orijo":"Homes are exempt; HATA-MURA farm modules that sell produce fall under it. Hydroponic coverage is not explicitly addressed on the FDA pages read; plan as if covered.","sources":["src-fda-psr","src-fda-preharvest"]},{"id":"C-G2","regime":"Hydroponic pathogen hazard (scientific basis)","jurisdiction":"n/a","status":"evidence","applies_to":"Recirculating nutrient solutions","requirement":"Root internalization of enteric pathogens in recirculating systems is the hydroponic-specific hazard","implication_for_orijo":"Never feed untreated greywater or urine-derived nutrient to leafy crops; UV the nutrient loop; keep KAMADO/TSUBO products on validated pathways only.","sources":["src-riggio2019"]}],"revision_log":[{"date":"2026-10-29","by":"gaps-2026-10-29","change":"Added certification paths, new sources/numbers/papers/projects from the completeness-critic pass; see research/v4/gaps-log.md"}]}