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  What is the basis of classifying manure? What are vermicompost and green manure? Name the nutrients which is supplied by green manure to the soil.

Answer:

                  Manures are classified on the basis kind of biological material available for decomposition.                                                           (1) Vermicompost It is a process when compost is prepared by using earthworms to hasten the process of decomposition of plants and animal refuse. In this earthworms helps to breakdown the wastes. This activity along with the excreta of the worms makes the compost rich in nutrients.                               (1) Green manure This practice involves growing or ploughing and mixing of green crops with soil to improve physical structure and soil fertility. Green manure supplies nitrogen, phosphorus to the soil.                                        (1)