What is green manure? How is it beneficial?

Explanation

Green manure is obtained by collection and decomposition of green leaves,twiigs of trees, shurbs and herbs growing in wastelenads, field bunds etc. Green manure improves soil structure, increases water holding capacity and decreases soil loss by erosion.It also helps in reclamation of alkaline soils and reduces weed proliferation.It is a manure obtained from undecomposed green material derived from leguminous plants e.g Sunhemp,Dhaincha etc.