Sabesan, K.Sathananda, C.2020-09-022020-09-021986Tropical Agriculturist, 142:p.83-88https://dl-doa.nsf.gov.lk/handle/1/2728SOYBEANSPhosphorusPotassiumNodulationYieldSoybeanEffect of phosphorus and potassium on nodulation and yield of soybeansArticle