Vigna – an annual plant from the legume family, known as 'cowpea' or yardlong bean. Its main species is Vigna unguiculata subsp. sesquipedalis, and the MARFA variety is included in the list of popular types. The plant prefers a warm climate and sufficient moisture but cannot tolerate overwatering. The vegetative period from germination to grain maturity is 100–120 days.
Vigna stems can reach lengths of up to 3–4 meters, and numerous side shoots actively bear fruit, creating a dense plant structure. Each bush requires reliable support, as the total weight of pods during active fruiting can exceed 5 kilograms. The pods are long – from 30 to 100 centimeters, thin and fleshy, fiberless, and green in color. The beans inside have a brownish tint. Unlike regular beans, Vigna differs with a sweeter taste and delicate texture.
Vigna varieties, including MARFA, differ in maturity periods and yield: from 1.5 to 2.5 kg per square meter. The plant can be used in home cooking as boiled, fried, or canned product; green beans, seeds, and even leafy mass are suitable for consumption. The remaining part of the plant can be fed to agricultural animals. Due to its height and stem density, Vigna is also an excellent choice for vertical greening.
Vigna is cultivated as a vegetable crop, and its beans are valued for their high nutritive value and mild taste. The plant grows easily in greenhouses or via seedling method, allowing harvest at different times of the year.
