Sirisena, D.N.Prof. Rathnayake, W.M.U.K.Kumarasinghe, H.C.A.Kumarathunga, D.P.2022-03-082022-03-082021-10https://dl-doa.nsf.gov.lk/handle/1/43251-3otherNitrogenAn easy way to give nitrogen to the paddy fieldBiocharEasy way of applying Nitrogen of paddy fieldsArticle