{"id": "card_floor_agriculture", "kind": "note", "title": "Agriculture — soil, sun, and chemistry into food", "body": "Crops fix carbon by photosynthesis (glucose) and need fixed nitrogen (Haber-Bosch ammonia, feeding half the world). Pillars rest on biology (the crop), chemistry (fertilizer and photosynthesis) and ecology (the agro-ecosystem). The stick (stick_agriculture_soil_sun_and_chemistry_into_food) seals ammonia per mole of nitrogen and the molar mass of glucose (tools/seed_agriculture.py).", "source": {"label": "Narrow Highway — agriculture", "url": "", "authority_tier": "engine_derived", "ref": "stick_agriculture_soil_sun_and_chemistry_into_food"}, "shelf": "codex", "box": "agriculture", "bands": ["floor", "agriculture", "one map"], "subject": "Agriculture — soil, sun, and chemistry into food", "connections": [{"to_card_id": "card_agriculture_the_crop", "relationship": "has_part", "evidence": "a pillar (The crop - photosynthesis and growth)"}, {"to_card_id": "card_agriculture_fertilizer", "relationship": "has_part", "evidence": "a pillar (Fertilizer - fixing nitrogen)"}, {"to_card_id": "card_agriculture_agroecosystem", "relationship": "has_part", "evidence": "a pillar (The agro-ecosystem - pests and pollinators)"}, {"to_card_id": "card_k_floor_of_discovery", "relationship": "part_of", "evidence": "feeding the world on the one map, rooted in the Floor of Discovery"}], "author": "engine", "created_at": 0.0, "updated_at": 0.0, "visibility": "public", "lifecycle_stage": "public", "volatility": "permanent", "surface": "secular", "generated": false, "call": "codex.agriculture", "facets": {"subject": ["floor", "one map"]}, "presentation": {"glyph": "•", "kind_label": "agriculture", "by": "Narrow Highway — agriculture", "authority": "engine_derived", "posted": "", "standing": ""}, "neighbors": [{"id": "card_agriculture_the_crop", "title": "The crop - photosynthesis and growth", "relationship": "has part", "why": "a pillar (The crop - photosynthesis and growth)", "href": "/card/card_agriculture_the_crop", "resolved": true}, {"id": "card_agriculture_fertilizer", "title": "Fertilizer - fixing nitrogen", "relationship": "has part", "why": "a pillar (Fertilizer - fixing nitrogen)", "href": "/card/card_agriculture_fertilizer", "resolved": true}, {"id": "card_agriculture_agroecosystem", "title": "The agro-ecosystem - pests and pollinators", "relationship": "has part", "why": "a pillar (The agro-ecosystem - pests and pollinators)", "href": "/card/card_agriculture_agroecosystem", "resolved": true}, {"id": "card_k_floor_of_discovery", "title": "The Floor of Discovery — one floor, and by its design the fear of God", "relationship": "part of", "why": "feeding the world on the one map, rooted in the Floor of Discovery", "href": "/card/card_k_floor_of_discovery", "resolved": true}], "house": {"door": "FIND", "kind": "card", "trail": "connections", "seal": "/card/card_floor_agriculture", "next_step": {"do": "follow a connection: what this card rests on, and what rests on it", "door": "FIND", "tool": "card_connections", "params": {"id": "card_floor_agriculture"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}