What is the main nutrient that compost produces?

Nitrogen is the main nutrient that compost produces. Dark-colored, fresh-smelling, nutrient-rich compost results from 30 to 1 ratiOS of carbon- to nitrogen-rich recyclables since the former supplies the energy and the latter the food. The breakdown of compostables and their interaction with one another and with air, heat, macro- and micro-organisms, and moisture yields calcium, copper, hydrogen, iron, manganese, nitrogen, oxygen, phosphorus, potassium and zinc.