Browsing by Author "Dharmakeerthi, R.S."
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Item Assessing the quality of biochar produced from coconut husk waste(Soil Science Society of Sri Lanka:Peradeniya, 2014) Vasujini, P.; Dandeniya, W.S.; Dharmakeerthi, R.S.Item Availability and leaching of nutrients after biofilm biofertilizer applications into a Red Yellow Podsolic soil(Rubber Research Institute:Agalawatta, 2014) Hettiarachchi, R.P.; Dharmakeerthi, R.S.; Seneviratne, G.; Jayakody, A.N.; De Silva, E.; Gunathilake, T.; Thewarapperuma, A.; Maheepala, C.K.Item Beneficial nutrient management practices for improving maize (zea mays) yield in a tropical entisol(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2015) Mariaselvam, A.A.; Dandeniya, W.S.; Indraratne, S.P.; Dharmakeerthi, R.S.Item Changes in structural and chemical properties of rice husk biochar co-pyrolysed with Eppawala rock phosphate under different temperatures(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2018-12) Dissanayake, D.K.R.P.L.; Dharmakeerthi, R.S.; Karunarathna, A.K.; Dandeniya, S.W.Item Comparison of the effectiveness of liquid and granule fertilizer mixtures on rubber plants raised by young budding technique(Rubber Research Institute. Agalawatta, 1997) Dharmakeerthi, R.S.; Yogaratnam, N.Y.; Samarappuli, L.; Silva, S.N.; Yakandawala, A.Effectiveness of granule fertilizer mixtures was compared with currently used liquid formulations on plants raised by young budding technique.Granule formulations are agronomicaly effective provided that they are applied in small quantities.Urea based mixtures was found to be comparatively mire detrimental than sulfate of ammonia based mixtures when used at concentrations higher than the recomended levels.Currently recommended fertilizer schedule with liquid formulations was the most effective programme for young budding among the treatments tested.Reduced frequency of application increased the deiback percentage significantly.However,it could be applied at two-week intervals instead of weekly intervals equally effectively,thereby reducing the application cost almost by half.Item Cyanotoxicity screening of cyanobacteria isolated from paddy fields in Sri Lanka using molecular methods(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka:Makandura, 2018) Munasinghe, M.A.B.J.; Balasooriya, B.L.W.K.; Piyathilaka, M.A.P.C.; Amarawansa, R.P.U.I.; Dandeniya, W.S.; Dharmakeerthi, R.S.Item Determination of desirable properties of bacteria, fungi and their biofilm associated with rubber rhizosphere(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2016) Hettiarachchi, R.P.; Dharmakeerthi, R.S.; Seneviratne, G.; Jayakody, A.N.; De Silva, K.E.; Gunathilake, T.; Thewarapperuma, A.Item Develop mass culture techniques for cyanobacterial inoculants as biofertilizer for paddy cultivation(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka:Makandura, 2018) Sadharekha, W.M.G.W.; Balasooriya, B.L.W.K.; Amarawansa, R.P.U.I.; Dandeniya, W.S.; Dharmakeerthi, R.S.Item Dynamics of nitrifiers in soils of intensively vegetable cultivated areas in Sri Lanka(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2019-11) Nawarathna, K.K.K.; Dandeniya, W.S.; Dharmakeerthi, R.S.; Weerasinghe, P.Item Exploring the Yield Response of Paddy (Oryza sativa L.) under Varying Levels of Soil Nitrogen, Phosphorus and Potassium(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2020-10) Kulasinghe, H.P.G.T.N.; Vitharana, U.W.A.; Dharmakeerthi, R.S.; Sirisena, D.N.; Rathnayake, W.M.U.K.Item Fertilizer usage and land productivity in intensively cultivated vegetable farming systems in Sri Lanka: an analysis based on a questionnaire survey(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2018-12) Upekshani, H.A.N.; Dharmakeerthi, R.S.; Weerasinghe, P.; Dandeniya, W.S.Item Growth of young budding plants as affected by type and packing density of the potting media(Rubber Research Institute. Agalawatta, 2009) Dharmakeerthi, R.S.; Siriwardana, E.A.D.; Edirimanna, V.U.; Chandrasiri, J.A.S.Item Humic acid based liquid organic fertilizer improved the growth of nursery and immature rubber plants grown in Boralu soil series(Rubber Research Institute:Agalawatta, 2013) Dharmakeerthi, R.S.; Chandrasiri, J.A.S.; Edirimanne, V.U.Item Impact of converting a rubber plantation into an oil palm plantation on physical quality of a red yellow podzolic soil in the low country wet zone of Sri Lanka(Soil Science Society of Sri Lanka:Peradeniya, 2009) Upekshani, U.A.N.; Dharmakeerthi, R.S.Item Microbial biofilms:novel biofertilizers for rubber plantations(Rubber Research Institute of Sri Lanka:Agalawatta, 2011) Hettiarachchi, R.P.; Dharmakeerthi, R.S.; Seneviratne, G.Item Molecular identification of cyanobacteria isolated from paddy fields of Sri Lanka(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka:Makandura, 2018) Sunil, A.J.Y.A.D.; Balasooriya, B.L.W.K.; Amarawansa, R.P.U.L.; Dandeniya, W.S.; Dharmakeerthi, R.S.Item Nutritional status of rubber growing soils in the Moneragala district(Rubber Research Institute . Agalawatta, 2005) Dharmakeerthi, R.S.; Silva, S.N.; Yakandawala, A.; Jayasinghe, W.K.Item Performance evaluation of a down draft double chamber pyrolysis reactor under field conditions(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2018-12) Alahakoon, A.M.Y.W.; Karunarathna, A.K.; Dharmakeerthi, R.S.Item Potential for rubber(Hevea brasiliensis Muell.Arg) cultivation in the Eastern Province of Sri Lanka(NSF. Colombo, 2011) Rodrigo, V.H.L.; Iqbal, S.M.M.; Dharmakeerthi, R.S.Item Preliminary investigations on ecophysiology of rubber (Hevea brasiliensis Muell.Arg.) and oil palm (Elaeis guineensis Jacq.) grown under plantaion conditions in Sri Lanka(2010) Senevirathna, A.M.W.K.; Karunathilake, P.K.W.; Nalleperuma, N.A.A.S.; Karunadasa, P.; Dharmakeerthi, R.S.