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Item Degree of phosphorous saturation in intensively cultivated soils in Sri Lanka(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2010) Amarawansha, E.A.G.S.; Indraratne, S.P.Item Effective cation exchange capacity. suitability for Sri Lankan soils(Soil Science Society of Sri Lanka:Colombo, 2003) Indraratne, S.P.Item Soil amendments and fertilizers as sources and sinks of heavy metals. Joachim memorial lecture 2009(Soil Science Society of Sri Lanka:Peradeniya, 2009) Indraratne, S.P.Item Characterization of an alfisol collected from dry zone of Sri Lanka to elucidate the retention mechanisms of pollutants(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2013) Sanjeevani, U.K.P.S.; Indraratne, S.P.; Weerasooriya, S.V.R.; Vitharana, W.A.U.