Legume rotations
Farmers already host nitrogen-fixers in clover and beans.
Half the nitrogen in many human bodies now traces to industrial ammonia. That is a census fact, not a brand.
Surplus fertilizer can fuel coastal dead zones. The cycle does not stop at the farm gate.
Body interfaces
Haber-Bosch bread
Industrial ammonia grew the 20th-century population. A human shove on the cycle.
Dead zones
Nitrate runoff can bloom algae that then steal oxygen.
N2O climate
A strong greenhouse gas from soils and waters when the relay is leaky.
Wastewater anammox
Plants can save energy by skipping full nitrification. Engineering, not a home kit.
Drinking-water nitrate
Limits exist for infants in some codes. Ask local water reports, not an atlas.
This page is not a fertilizer schedule.
Keep exploring
More in Beneficial allies
Gut microbiome
A diverse intestinal community fed by fibre — not a single ideal species list and not a wellness shop.
Familiarity 88Probiotics
Live microbes in food or capsules — strain-specific guests, not a whole microbiome and not medical advice.
Familiarity 90Fermentation
Microbes turning food into kimchi, doenjang, yoghurt and other living crafts — chemistry plus culture.
Familiarity 85Skin microbiome
A site-specific living film — oily, moist and dry neighbourhoods, not a sterile wrapper.
Familiarity 62Soil microbes
The hidden workforce of land — decomposers, mycorrhizae and a mostly uncultured majority.
Familiarity 48