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)
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