Sunn Hemp is an erect, herbaceous annual shrub. It is a summer legume crop with a well-developed taproot system.
It is primarily used as a cover crop or as a green manure to improve the nitrogen status of the soil. It can also be used as a source of fibre, but has limited use as a forage crop. This is mostly due to its palatability, digestibility and alkaloid toxicity.
It requires a minimum rainfall of 300 mm per annum.
Yields 5-18 t DM/ha/season
Depending on environmental conditions and management
Fixes high levels of Nitrogen
Adapted to low fertility soils
Known to suppress certain nematodes species