Glyricidia species is used as

Gliricidia species is used as Green manure and Green leaf manure.
Gliricidia is a genus of flowering plants in the legume family, Fabaceae and tribe Robinieae. The species G. sepium is a small, deciduous, ornamental tree, cultivated and used for a variety of purposes in tropical regions.
Gliricidia is a fast-growing, nitrogen-fixing leguminous tree that is used in agroforestry to add nitrogen and organic matter to the soil.