Explanation: Sesbania is a legume commonly used as a green manure crop to add nitrogen and organic matter to the soil.

• The most common species of sesbania used in Asia are Sesbania cannabina (former name acculeata), S. rostrata and S. cannabina (which produce nitrogen-fixing nodules in its roots).
• Sesbania rostrata (produces nitrogen-fixing nodules in both roots and stems) and is commonly found in Africa.

Source: Sesbania – IRRI Rice Knowledge Bank