ABSTRACT
The manures are organic in nature, plant or animal origin and contain organic matter in large proportion and plant nutrients in small quantities and used to improve soil productivity by correcting soil physical, chemical and biological properties. The materials included in this group are farmyard manure (FYM), compost, sewage sludge and green manure. Of these FYM, compost and green manure are the most important and widely used bulky organic manures. FYM is one of the most important agricultural by products. Unfortunately, however nearly 50 per cent of the cattle dung production in India today is utilized as fuel and is thus lost to agriculture. Vermicompost is the product of composting utilizing various species of worms, usually red wigglers, white worms, and earthworms to create a heterogeneous mixture of decomposing vegetable or food waste, bedding materials, and vermicast. The common concerted organic manures are oilcake, blood-meals, fish manure, meat meal and wool waste.
