Journal of the Soil Science Society of Sri Lanka

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Organic manure as a supplementary source of nitrogen in wetland rice cultivation
(Soil Science Society of Sri Lanka:Colombo, 2001) Sirisena, D.N.; Wickramasinghe, W.M.A.D.B.; Weerakoon, W.M.W.; Bandara, S.T.; Kumaragamage, D.
Effect of nitrogen on 1000-grain weight and grain filling of rice
(Soil Science Society of Sri Lanka:Peradeniya, 2005) Sirisena, D.N.; Hafeel, R.F.; Wickramasinghe, W.M.A.D.B.; Lilani, K.L.; Chandrakumari, K.L.L.
Rice straw silica -solubility characteristics and use as a silicon source in paddy cultivation
(Soil Science Society of Sri Lanka:Peradeniya, 2004) Wickramasinghe, W.M.A.D.B.
Suitability classification of some important soil fertility parameters of paddy fields in Kurunegala district
(Soil Science Society of Sri Lanka:Peradeniya, 2008) Rathnayake, W.M.U.K.; Sirisena, D.N.; Bandara, W.M.J.; Wickramasinghe, W.M.A.D.B.