International Sugar Journal

Use of cowpea (Vigna unguiculata) as a green manure and its effect on nitrogen (N) requirement and productivity of sugarcane* [Full subscriber]

Abstract The use of green manure to supplement or to replace the use of industrially synthetized nitrogenous fertilizers has attracted the interest of farmers worldwide, and sugarcane growers are no exception. Generally, sugarcane is fertilized with high rates of urea, causing a reduced profit and increased risk of pollution to the atmosphere and water bodies. To evaluate the response of sugarcane productivity to the incorporation of cowpea (Vigna unguiculata) as a green manure to replace or to complement fertilization with urea, an experiment was conducted during four crop cycles (plant cane and three ratoons) in the Cauca Valley in Colombia.…

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