Sesbania

SesbaniadrummondiiPlant

Sesbania cannabiana 002

Sesbania is a genus of flowering plants in the Fabaceae family, also commonly known as the legume, pea, or bean family. This genus includes between 50 to 60 species and is found throughout the tropics and subtropics, with a few species extending into temperate regions. The members of this genus are collectively known as sesbanias. They are notable for their rapid growth and nitrogen-fixing abilities, which allow them to improve soil fertility. Sesbania species are used for various purposes, including green manure, fodder, fiber, and wood. Some species are also cultivated for their ornamental value or for their edible parts.

Description

Sesbania species are annual or perennial herbs, shrubs, or small trees. The leaves are typically pinnate with numerous leaflets, and the flowers are usually brightly colored, ranging from white to yellow, pink, or red. The fruit is a legume (pod) that varies in size and shape among species.

Ecology

Sesbania species play a significant role in their ecosystems. They are capable of nitrogen fixation, a process by which atmospheric nitrogen is converted into ammonia, thereby enriching the soil with nitrogen and improving its fertility. This makes sesbanias valuable in agroforestry systems and as a means of reforesting degraded areas. They are often used in intercropping systems and as cover crops to protect and enhance soil health.

Uses

Green Manure

Some Sesbania species, such as Sesbania grandiflora and Sesbania sesban, are widely used as green manure. They are grown and then plowed into the soil to increase soil organic matter and nitrogen content.

Fodder

The leaves and young pods of certain species are used as fodder for livestock, providing a valuable source of protein.

Fiber and Wood

Sesbania bispinosa, commonly known as the sesbania pea, produces a fiber used in making paper and textiles. The wood of some sesbania species is used for making small articles and as firewood.

Ornamental

Species such as Sesbania grandiflora, with its large, attractive flowers, are grown as ornamental plants in gardens and landscapes.

Edible Uses

The flowers and young pods of Sesbania grandiflora are edible and are used in traditional dishes in Southeast Asia.

Conservation

While many Sesbania species are common and not considered at risk, habitat destruction and overharvesting have led to a decline in some species. Conservation efforts are necessary to ensure the survival of these species and the ecological benefits they provide.

Selected Species

• Sesbania grandiflora (syn. Aeschynomene grandiflora) – Agati, grandiflora
• Sesbania sesban (syn. Aeschynomene sesban) – Egyptian Rattlepod
• Sesbania bispinosa (syn. Sesbania aculeata) – Dhaincha, Prickly sesban

See Also

• Legumes
• Nitrogen fixation
• Agroforestry
• Green manure