Manure :
• It is a source of organic matter.
• It supplies small quantities of nutrient to the soil.
• It is prepared by the decomposition of animal excreta and plant waste.
Various forms of Manures :
(A) Compost : The process in which animal excreta (like cow dung), kitchen waste, plant remains, waste food, sewage waste etc. are decomposed in pits is known as composting.
(B) Vermicompost : Compost prepared by using earthworms to hasten the process of decomposition of plants and animals refuse is called vermicompost.
(C) Green manure : Some plants like sun hemp, guar etc. are grown and after sometime mulched by ploughing in the field. These green plants turn into green manures. They are rich in nitrogen and phosphorus.
