Ahad, M.A.Debnath, N.C.2020-09-022020-09-021989Tropical Agriculturist, 145:p.25-29https://dl-doa.nsf.gov.lk/handle/1/2682CaKAvailable CaAvailable KRhizosphereAvailable soil K and Ca in the rhizosphere of rice, maize, soybean and juteArticle