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Urine is a high nitrogen content liquid fertilizer that could be used, i would also think that FPJ made from legumes would be high in nitrogen also or other high nitrogen plants like corn or comfrey but i don't think any of them will be as rich as FAA or urine. You could also plant legumes in with your crops such as hairy vetch, Legumes r known to pull nitrogen out of the air and store it in small sacks on the roots that the soil bacteria have access to and release to the plants.
by dagoofman · over 5 years ago