Which one is green manure/biofertilizer

Options

A. Sesbania
B. Maize
C. Rice
D. Oat

Answer

A

Explanation

Green manure is a type of cover crop grown to add nutrients and organic matter to the soil. Typically a green manure crop is grown for a specific period of time and then ploughed under and incorporated into the soil while it is green or shortly after flowering. It used leguminous crop such as sesbania aculeata, sesbania rostrata and crotalaria juncea.