Effect of nitrogen-and potassium-based fertilizers on nitrogen fixation in the winged bean, Psophocarpus tetragonolobus

Parthipan, S.Kulasooriya, S.A.2015-06-032015-06-031989MIRCEN Journal, 5:p.335-341https://dl-ifs.nsf.gov.lk/handle/1/336AgricultureEffect of nitrogen-and potassium-based fertilizers on nitrogen fixation in the winged bean, Psophocarpus tetragonolobusArticle