Browsing Vidyodaya Journal of Science by Author "Ranaweera, S.S."

Now showing items 1-6 of 6

Effects of Foliar Application of Nitrogen and Molybdenum on the Uptake of Nitrogen, Seed Yield and Its Quality of Soybeans (Glycine max (L.) Merr.)

Ranaweera, S.S. (1992)

Effects of foliar nutrition of soybeans (cv.PB-I) with nitrogen and molybdenum on the seed yield and its quality are reported. Nitrogen uptake was positively affected by the foliar application of nitrogen. Foliar ...
The Effects of Papaya Ringspot Virus Infection on the Nitrogen Metabolism of Carica papaya L.: Part I. Protein and Non-protein Nitrogen Contents in Leaves

Wijendra, W.A.S.; Ranaweera, S.S.; Salim, N. (1995)

The effects of papaya ringspot virus (PRSV) infection, on protein and non-protein nitrogen contents in the leaves of the host, Carica papaya L. were examined. The protein and non-protein nitrogen contents were affected ...
The Effects of Papaya Ringspot Virus Infection on the Nitrogen Metabolism of Carica papaya L.: Part II. Composition of Free Amino Acids in the Leaves

Wijendra, W.A.S.; Ranaweera, S.S.; Salim, N. (1995)

Leaves of mechanically inoculated Carica papaya L. plants with papaya ringspot virus (PRSV) were examined for free amino acids by using paper, thin layer and high pressure liquid chromatography (HPLC) techniques. Seven ...
Mineral Nutrition of Cymbopogon nardus (L) Rendle: Part I. Effects of Magnesium and Phosphorus Nutrition on Growth and the Yield of Essential Oil

Ranaweera, S.S.; Thilakaratne, W.P. (1992)

A greenhouse pot experiment with thirteen treatments of fertilizers was conducted to examine the effects of phosphorus and magnesium on the growth of Cymbopogon nardus (L) Rendle (Ceylon citronella) and the yield of ...
Mineral Nutrition of Cymbopogon nardus (L) Rendle: Part II. Effects of Magnesium and Phosphorus Nutrition on the Fractional Composition of Essential Oil

Ranaweera, S.S.; Thilakaratne, W.P. (1992)

Results obtained from a fertilizer experiment conducted with thirteen treatments indicate the positive effect of phosphorus and magnesium nutrition on the yield and the fractional composition of essential oil of ...
Mosquito-larvicidal Activity and Activity Constituents of Acorus calamus L. Essential Oil

Ranaweera, S.S. (1995)

Fractions of Acarus calamus oil obtained by vacuum liquid chromatography showed increased mosquito-larvicidal activity against III instar larvae of Culex quinquefasciatus from LCso' 39ppm in unfractionated oil to LCso,27ppm. ...

Browsing Vidyodaya Journal of Science by Author "Ranaweera, S.S."

Browsing Vidyodaya Journal of Science by Author "Ranaweera, S.S."

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