[2] It is now widely grown throughout the tropics and subtropics[2] as a source of green manure, fodder and lignified fiber obtained from its stem.

Leaf simple, c. 2.5v10.5 cm long, c. 6–20 mm broad, linear or oblong, obtuse or subacute, apiculate, pubescent on both sides, hairs appressed, silky.

[9] However, researchers in Brazil hypothesized that planting and incorporating Crotalaria juncea with animal manure could enhance the nutrient mineralization pattern for agricultural crops.

After measuring the amounts of Nitrogen, Phosphorus, and Potassium in the soils, it was discovered that Crotalaria juncea along with only half the usual dose of goat manure produced the best results.

[10] The objective was to find the mixture between Crotalaria juncea and Napier grass that would yield the highest vegetable seedling production.

[10] Although reported to contain antinutritional factors such as alkaloids, sunn hemp is grown for fodder to feed cattle, mainly in India.

The method of phytoremediation functions effectively in decontamination and remediation by using microorganisms and plants to remove, transfer, stabilize, or destroy harmful elements.

In addition, phytoremediation is effective in removal of copper, which has been identified as a metal strongly present in the soil of Crotalaria juncea.

However, an excess of copper in plant tissues has demonstrated the potential of affecting both physiological and biochemical processes including photosynthesis.

[14] The structures of chloroplasts have been affected by the excess of copper, which ultimately resulted in decreased pigmentation levels of Crotalaria juncea.

[15] There are, however, studies that have indicated that Crotalaria juncea has a high tolerance to copper concentrations in the soil and root systems which are beneficial traits for phytostabilization programs.

[16] Studies have also shown that phosphate and Rhizophagus clarus (an arbuscular mycorrhizal fungus) are capable in altering the physiological responses of Crotalaria juncea that is found in soil high in copper levels.

[17] Phosphate has been demonstrated to be effective in reducing the level of toxicity in Crotalaria juncea, resulting in promotion of plant growth.

When the application of phosphate is coupled with the inoculation of Rhizophagus clarus, the result is a synergistic effect that allows copper toxicity levels to be reduced through various mechanisms.

[17] Phosphate uptake is significantly improved in the presence of AMF, which functions to effectively reduce the amount of available heavy metals.