Browsing by Author "De Silva, R.L."
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Item Asphyxiation of tea roots in clayey soils(The Tea Research Institute. Talawakele, 1967) De Silva, R.L.Item Blister blight control. recommendations to estates(Tea Research Institute. Thalawakele, 1966) De Silva, R.L.Item Conversion to the metric system(The Tea Research Institute. Talawakele, 1971) De Silva, R.L.Item Deficiency diseases and the symptoms of magnesium deficiency(Tea Research Institute. Thalawakele, 1959) Mulder, D.; De Silva, R.L.Item The dynamic environment(Tea Research Institute. Thalawakele, 1971) De Silva, R.L.Item The dynamic environment(The Tea Research Institute. Talawakele, 1971) De Silva, R.L.Item The economics of blister blight control -1 fungicide dose(The Tea Research Institute. Talawakele, 1967) De Silva, R.L.Item Epidemiology of tea Blister blight (Exobasidium vexans)(The Tea Research Institute. Talawakele, 1969) Kerr, A.; De Silva, R.L.Item Factors affecting productivity on tea estates in Sri Lanka -1- Infilling vacancies in tea fields(Tea Research Institute. Thalawakele, 1975) De Silva, R.L.; Manipura, W.B,Item Factors affecting productivity on tea estates in Sri Lanka -1- the impact of each field on annual crop production(Tea Research Institute. Thalawakele, 1975) De Silva, R.L.; Saravanapavan, T.V.Item Factors affecting productivity on tea estates in Sri Lanka. 3 proper land use(Tea Research Institute. Thalawakele, 1977) De Silva, R.L.Item The importance of soil air for tea root growth(The Tea Research Institute. Talawakele, 1968) De Silva, R.L.; Seevaratnam, L.A.Item The influence of shallow topsoil on the incidence of collar and branch canker disease of tea (Phomopsis theae)(The Tea Research Institute. Talawakele, 1968) De Silva, R.L.; Fernando, S.R.A.Item Information requirements of scientific and technical personnel(NARESA:Colombo, 1978) De Silva, R.L.Item Investigations on some aspects of the interrelationship between yield and quality in tea (Camellia sinensis L.)(Tea Research Institute. Thalawakele, 1979) De Silva, R.L.Item Investigations on the effect of some foliar fungicidal sprays on certain properties of made tea(The Tea Research Institute. Talawakele, 1965) Kirtisinghe, D.; De Silva, R.L.Item Investigations with new fungicides for the control of blister blight (Exobasidium vexans massee) on tea(The Tea Research Institute. Talawakele, 1965) De Silva, R.L.Item Losses of crop caused by exobasidium vexans massee -2- losses on unshaded, high -yielding clonal tea(Tea Research Institute. Thalawakele, 1974) De Silva, R.L.; Saravanapavan, T.V.; Murugiah, S.Item Losses of tea crops caused by Exobasidium vexans message on tea(Tea Research Institute. Thalawakele, 1972) De Silva, R.L.; Murugiah, S.; Saravanapavan, T.V.Item Maintenance leaf -fall in low-grown tea(The Tea Research Institute. Talawakele, 1966) De Silva, R.L.; Waidyanatha, U.P. De S.