There are many benefits of Vigna mungo. These include: It increases the fertility of the soil. It aids digestion. It improves your skin health. It boosts your energy levels. It increases bone mineral density. It helps diabetics. Black gram (Urd bean) is cultivated in the Indian subcontinent primarily as an intercrop with cereals, pigeon peas, etc. during the rainy season and as a pure crop on residual moisture in winter (in rice fallows) and in the spring/summer season (i.e., irrigated crop) in between two main crops.