{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.fertilizer","code":"thing-q83323","url":"https://ver.cy/models/thing/q83323/","name":"fertilizer","alternateNames":["liquid plant manure","nettle manure","potash","self-supplied fertilizer","commercial fertilizer","aquatic plant fertilizer","Metaphos","chemical fertilizer","Agronomic ores","Phosphate fertiliser","Carbonation scum","manure"],"kind":"thing","status":"published","version":"0.2.0-wave.2","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.MAT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A substance applied to soil or plants to supply nutrients such as nitrogen, phosphorus and potassium, including mineral fertilisers such as potash and ammonium compounds, organic fertilisers such as manure, compost and plant teas, and specialised products for aquatic plants, hydroponics and gardens; fertilisers raise yields but require careful use to avoid pollution of water and air, and are regulated for composition, labelling and use.","purpose":"Let an agent explain fertiliser types and nutrients, support choosing and applying fertilisers safely in gardens and farms, describe environmental effects and regulation with attribution, and describe production and history.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Nutrient supply","Mineral or organic","Yield effect","Environmental risk"],"structure":{"bundles":[{"id":"choose","name":"Choose","description":"Choosing fertiliser.","layers":[{"id":"needs","name":"Needs","description":"Matching plant needs.","findings":[{"id":"needs-finding","name":"Needs","description":"Needs.","questions":[{"text":"Which fertiliser suits this crop or garden, based on soil testing and plant needs, according to horticultural guidance?","kind":"action"},{"text":"What do the numbers on fertiliser labels mean?","kind":"definition"}]}]},{"id":"organic","name":"Organic","description":"Organic options.","findings":[{"id":"organic-finding","name":"Organic","description":"Organic.","questions":[{"text":"How are manure, compost and plant teas such as nettle manure made and used?","kind":"provenance"},{"text":"How do organic and mineral fertilisers compare?","kind":"provenance"}]}]}]},{"id":"apply","name":"Apply","description":"Applying safely.","layers":[{"id":"application","name":"Application","description":"Rates and timing.","findings":[{"id":"application-finding","name":"Application","description":"Application.","questions":[{"text":"How much fertiliser should be applied and when, according to guidance, to avoid waste and damage?","kind":"provenance"},{"text":"Which rules restrict application near water?","kind":"provenance"}]}]},{"id":"storage","name":"Storage","description":"Storage and safety.","findings":[{"id":"storage-finding","name":"Storage","description":"Storage.","questions":[{"text":"How should fertilisers be stored and handled safely, and which pose fire or explosion risks?","kind":"provenance"},{"text":"Is there an incident now?","kind":"boundary"}]}]}]},{"id":"environment","name":"Environment","description":"Environmental effects.","layers":[{"id":"pollution","name":"Pollution","description":"Water and air pollution.","findings":[{"id":"pollution-finding","name":"Pollution","description":"Pollution.","questions":[{"text":"How do fertilisers cause eutrophication and emissions, and what does research say about mitigation?","kind":"provenance"},{"text":"Which regulations address it?","kind":"provenance"}]}]},{"id":"debate","name":"Debate","description":"Policy debates.","findings":[{"id":"debate-finding","name":"Debate","description":"Debates.","questions":[{"text":"What are the attributed positions on fertiliser use, organic farming and food security?","kind":"provenance"},{"text":"Is the presentation neutral?","kind":"boundary"}]}]}]},{"id":"learn","name":"Learn","description":"Production and history.","layers":[{"id":"production","name":"Production","description":"How fertilisers are made.","findings":[{"id":"production-finding","name":"Production","description":"Production.","questions":[{"text":"How are nitrogen, phosphate and potash fertilisers produced, and what are the supply and energy issues?","kind":"provenance"},{"text":"Which entry fits a specific fertiliser?","kind":"action"}]}]},{"id":"history","name":"History","description":"History.","findings":[{"id":"history-finding","name":"History","description":"History.","questions":[{"text":"How did fertilisers develop from manure and guano to synthetic ammonia, and how did they change agriculture?","kind":"provenance"},{"text":"Which misconceptions arise?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Report nutrient content, application timing and rules from product labels and guidance.","Record applications for the farm it is authorized to work for."],"mustNot":["Apply fertilizer near watercourses or above permitted rates.","Store fertilizers in ways that create fire, explosion or contamination risk.","Assist in diverting fertilizers for making explosives.","Misstate nutrient content or contaminants on a product."],"requiresHuman":["Applying fertilizer at scale or in sensitive areas.","Buying or transferring regulated mineral fertilizers."]},"ethics":{"considerations":["Fertilizers feed people but runoff kills rivers and coastal waters.","Some mineral fertilizers have caused major explosions and are misused by criminals."],"affectedParties":["Farmers and workers","Downstream communities","Aquatic life"]},"owners":{"steward":"The farm or person who holds it; agriculture and environment authorities regulate use.","roles":[],"masterSystems":[]},"relations":[{"target":"Q115922789","type":"parent","note":"registry parent class"},{"target":"Q2746959","type":"parent","note":"registry parent class"},{"target":"Q79529","type":"parent","note":"registry parent class"},{"target":"agrochemical","type":"related","note":"category"},{"target":"chemical substance","type":"related","note":"category"},{"target":"nitrile","type":"related","note":"nitrogen chemistry contrast"},{"target":"water treatment","type":"related","note":"nutrient pollution"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.fertilizer","Wikidata: Q83323 (https://www.wikidata.org/wiki/Q83323)"]},"properties":{"applicability":"required","items":["Bulk density:  kg/m3 - Measure the mass per occupied volume under stated packing conditions for solid fertilizer.","Water solubility:  g/L - Measure the mass dissolved per volume of water at a stated temperature for a specified fertilizer composition.","Moisture content:  % by mass - Determine water mass relative to sample mass using a method suitable for the fertilizer composition."]},"recognition":{"applicability":"required","items":["Supplies plant nutrients","Mineral or organic","Soil conditioners improve structure rather than supply nutrients","Granules, powders, liquids or organic materials such as manure."]},"capabilities":{"applicability":"required","items":["explain types and nutrients","support choosing and applying","describe environmental effects and regulation","describe production and history"]},"hazards":{"applicability":"required","items":["Water pollution and eutrophication","Over-application and plant damage","Storage hazards of some mineral fertilisers"]},"interfaces":{"applicability":"required","items":["Fertiliser composition and labelling regulations","Nitrate and water protection rules","Organic farming standards"]},"context":{"applicability":"required","items":["Supplying plant nutrients.","nitrogen, phosphate and potash mineral fertilisers","compound and slow-release fertilisers","organic fertilisers such as manure and compost","liquid and foliar fertilisers including plant teas","aquatic and hydroponic fertilisers"]}},"sources":[{"title":"Wikidata item Q83323: fertilizer","url":"https://www.wikidata.org/wiki/Q83323","note":"identity and sense of the item"},{"title":"Wikipedia: Fertilizer","url":"https://en.wikipedia.org/wiki/Fertilizer","note":"general description of the item"}],"openQuestions":["Should each nutrient fertiliser be a separate entry?","How should application guidance be localised?","How should regulations be linked?"],"resources":{"spec":"/models/things/publications/thing-q83323/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q83323/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T23:04:34Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:33+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}