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Urea as a nitrogen fertilizer for rubber plantations in sri lanka II.. agronomic investigations
Yogarathnam ,N.
;
Perera, M.A.
(
Rabbur Research Institute of Sri Lanka. Agalawaththa
,
1981
)
Gas exchange parameters for early selection of Hevea brasiliensis Muell. Arg
Nugawela, A.
;
Aluthhewage, R.K.
(
Rubber Research Institute. Agalawatte
,
1985
)
Effect of the rootstock and scion on bud emergence of Hevea budgrafts
Samaranayake, C.
;
Abeywardena, V.
;
Gunaratne, R.B.
;
Bandara, K.A.G.
(
Rubber Research Institute. Agalawatta
,
1980
)
A nursery progeny test of SALB resistant hybrids of interspecific crosses of hevea
Gonclaves, P.D.S.
;
Fernando, D.M.
;
Rossetti, A.G.
(
Rubber Research Institute. Agalawatta
,
1980
)
Urea as a source of nitrogen for rubber plantations in Sri Lanka I.. a review and preliminary observations
Yogaratnam, N.
(
Rubber Research Institute Sri Lanka. Agalawaththa
,
1981
)
Zero-Grazed pasture under immature Hevea rubber. improved productivity of Panicum maximum and P. maximum + Pueraria phaseoloides and their competition with Hevea
Waidyanatha, U.P.de S.
;
Wijesinghe, D.S.
;
Stauss, R.
(
Rubber Research Institute. Agalawaththa
,
1982
)
The effect of nitrogen rates and cutting frequencies on the productivity of two ecotypes of Panicum maximum interplanted with immature rubber
Dissanayake, S.N.
;
Waidyanatha, U.P. de S.
(
Rubber Research Institute of Sri Lanka. Agalawaththa
,
1982
)
Fertilizer use among perennial crops
Peries, O.S.
;
Yogarathnam, N.
(
Rubber Research Institute of Sri Lanka. Agalawaththa
,
1982
)
Observations on the development of the sporophore of Rigidoporus lignosus and the release and germination of basidiospores
Liyanage, I.
;
Peries, O.S.
;
Liyanage, A. de S.
;
Wettasinghe, C.
(
Rubber Research Institute of Sri Lanka. Agalawaththa
,
1982
)
Effects of pottasium and magnesium on leaf and bark nutrient contents of young Hevea brasiliensis
Weerasuriya, S.M.
;
Yogaratnam, N.
(
Rubber Research Institute. Agalawatta
,
1989
)
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Author
Nugawela, A. (4)
Peries, O.S. (4)
Samaranayake, C. (4)
Aluthhewage, R.K. (3)
Yogaratnam, N. (3)
Jayasinghe, C.K. (2)
Waidyanatha, U.P. De S. (2)
Weerasuriya, S.M. (2)
Wickremasinghe, W.N. (2)
Yapa, P.A.J. (2)
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Subject
Rubber (27)
Agriculture (26)
Yield (5)
Plant growth (4)
Cover crops (3)
Dry matter yield (3)
Fertilizers (3)
Hevea brasiliensis (3)
Nitrogen fertilizers (3)
Photosynthesis (3)
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Date Issued
1989 (2)
1988 (4)
1987 (1)
1986 (3)
1985 (4)
1984 (5)
1982 (4)
1981 (2)
1980 (2)