I produce my own food and I use organic fertilizer and organic soil, and I produce so much food that I have to give them away sometimes. The main source of Nitrogen is chicken manure composted or chicken manure compost tea, or worm casting . I produce my own seeds from any plant and I keep them for a long time inside a refrigerator The best way to plant is not directly to the soil but using seeding trays. A new source of food for family is MIcrogreens, they can be produced in seven days instead of waiting for 90 and 120 days I am a self educated Agronomist