Browsing by Author "Mapa, R.B."
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Item Aggregate stability of major soils in the wet zone of Sri Lanka(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1997) Jayalath, K.D.D.; Mapa, R.B.Item Aggregate stability of soils of the intermediate zone of Sri Lanka(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2001) Rajapaksha, K.L.N.; Mapa, R.B.; Dassanayake, A.R.Item Characterization of soil hydraulic properties of the noncalcic brown soils(Soil Science Society of Sri Lanka:Peradeniya, 1987-88) Mapa, R.B.; Bodhinayake, W.L.Item Characterization of soil physical properties in Andigama series in relation to coconut root growth(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1996) Vidhana Arachchi, L.P.; Mapa, R.B.; Yapa, P.A.J.; Somapala, H.Item Characterization of soil water movement in reddish brown earth soils (alfisol)(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1990) Pathmarajah, S.; Mapa, R.B.Item Determination of insitu field capacity of noncalcic brown soils(Soil Science Society of Sri Lanka:PEradeniya, 1989) Bodhinayake, W.L.; Mapa, R.B.Item Determination of resource competition and soil fertility regeneration in sloping agricultural land technology (SALT) for tea in the up-country wetzone (WU2) of Sri LankaWijenaike, W.C.; De Costa, W.A.J.M.; Mapa, R.B.Item Development and application of a national digital soil database for land resource planning in Sri Lanka(Soil Science Society of Sri Lanka:Colombo, 2003) Eilers, R.G.; Lelyk, G.W.; Goh, T.B.; Mapa, R.B.; Dasanayake, A.R.Item Effect of mulching, potassium fertilizer and clones in minimizing drought effects in young tea(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1992) Ekanayake, P.B.; Sangakkara, U.R.; Mapa, R.B.Item Effect of potassium on drought tolerance of groundnuts and chilies in Mahaweli system BMapa, R.B.; Wadasinghe, G.Item Effect of texture and organic matter on soil water retention parameters(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2002) Rajapaksha, K.L.N.; Mapa, R.B.; Sassanayake, A.R.Item Fertility evaluation for wet zone soils of Sri Lanka(Soil Science Society of Sri Lanka:Colombo, 1999) Mapa, R.B.Item Geostatistical analysis of soil properties to support spatial sampling in a paddy growing alfisol(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2010) Nayanaka, V.G.D.; Vitharana, W.A.U.; Mapa, R.B.Item Hydrological implications of soil water dynamics under an alley cropping system in the mid country intermediate zone of Sri Lanka(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1998) Nayakekorala, H.B.; Mapa, R.B.; Maddumabandara, C.M.Item Land suitability evaluation for cultivation of oil palm in the wet zone of Sri Lanka(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1997) Kalupahana, A.; Mapa, R.B.Item Land use effects on aggregate size distribution in reddish brown latasolic soils (Rhodudults)(Soil Science Society of Sri Lanka:Peradeniya, 1991) Mapa, R.B.; Wanasundara, W.M.N.U.Item Litter accumulation from Mucuna bracteata cover crop and its effects on some soil chemical properties in rubber plantations(Rubber Research Institute. Agalawatta, 2010) Chathurika, S.; Samarappuli, L.; Mapa, R.B.Item Paddy sector. challenges and changes in 2020(People's Bank. Colombo, 1999) Mapa, R.B.Item Relationship between clay activity and specific surface with clay mineralogy for some major soils of Sri Lanka(Soil Science Society of Sri Lanka:Colombo, 1996) Mapa, R.B.Item Soil water dynamics in alley cropping systems in the dry zone of Sri Lanka(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2001) Keerthisena, R.S.K.; Mapa, R.B.; Yapa, P.A.J.