Anaerobic compost
This process of compost preparation involves the decomposition of organic materials in anaerobic conditions. The N, P and K contents are 0.90%, 0.83%, and 0.65%. This utilizes weeds, crop stubbles, or straw, crop residues such as cotton stalks, ground nut husks, leaves, sugarcane trash, urine-soaked earth, and litter from cattle-shed, waste fodder, hedge clipping, etc. It takes about 4-5 months to prepare in a trench.