Contamination of soil with fluoride by long-term application of superphosphates to pastures and risk to grazing animals von MCLAUGHLIN, M. J, STEVENS, D. P, KEERTHISINGHE, D. G, CAYLEY, J. W. D, RIDLEY, A. M

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Inhibition of urease activity in flooded soils: Effect of thiophosphorictriamides and phosphorictriamides von Keerthisinghe, D.G., Freney, J.R.

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Use of urease, algal inhibitors, and nitrification inhibitors to reduce nitrogen loss and increase the grain yield of flooded rice (Oryza sativa L.) von Chaiwanakupt, P, Freney, J.R, Keerthisinghe, D.G, Phongpan, S, Blakeley, R.L

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Effect of wax-coated calcium carbide and nitrapyrin on nitrogen loss and methane emission from dry-seeded flooded rice von Keerthisinghe, D.G, Freney, J.R, Mosier, A.R

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Inhibition of urease activity in flooded soils by phenylphosphorodiamidate and n-(n-butyl) thiophosphorictriamide von qui-Xiang, Luo, Freney, J.R., Keerthisinghe, D.G., Peoples, M.B.

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Inhibition of jack bean urease by phosphoric-and thiophosphorictriamides von Keerthisinghe, D.G., Blakeley, R.L.

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Use of urease inhibitors to reduce ammonia loss from broadcast urea and increase grain yield of flooded rice in Thailand von Phongpan, S., Freney, J. R., Keerthisinghe, D. G., Chaiwanakupt, P.

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Effect of urease, nitrification and algal inhibitors on ammonia loss and grain yield of flooded rice in Thailand von Freney, J. R., Keerthisinghe, D. G., Phongpan, S., Chaiwanakupt, P., Harrington, K. J.

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Use of phenylphosphorodiamidate and N-(n-butyl)thiophosphorictriamide to reduce ammonia loss and increase grain yield following application of urea to flooded rice von Phongpan, S., Freney, J. R., Keerthisinghe, D. G., Chaiwanakupt, P.

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Use of urease inhibitors to reduce ammonia loss following application of urea to flooded rice fields von FRENEY, J. R., KEERTHISINGHE, D. G., CHAIWANAKUPT, P., PHONGPAN, S.

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Effect of encapsulated calcium carbide and urea application methods on denitrification and N loss from flooded rice von Keerthisinghe, D. G., Xin-Jian, Lin, Qi-xiang, Luo, Mosier, A. R.

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Use of urease inhibitors to reduce ammonia loss following application of urea to flooded rice fields von FRENEY, J. R, KEERTHISINGHE, D. G, CHAIWANAKUPT, P, PHONGPAN, S

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Multiseason Recoveries of Organic and Inorganic Nitrogen-15 in Tropical Cropping Systems von Dourado-Neto, D, Powlson, D, Abu Bakar, R, Bacchi, O.O.S, Basanta, M.V, Thi Cong, P, Keerthisinghe, G, Ismaili, M, Rahman, S.M, Reichardt, K, Safwati, M.S.A, Sangakkara, R, Timm, L.C, Wang, J.Y, Zagal, E, Van Kessel, C

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Electron Transmission through Polycarbonate Nanocapillaries von Keerthisinghe, D, Dassanayake, B S, Silva, G G De, Ayyad, A, Tanis, J A

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Angular and time dependence of electron transmission through a macroscale tapered glass capillary von Silva, G G De, Dassanayake, B S, Keerthisinghe, D, Ayyad, A, Tanis, J A

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Transmission of Fast Highly Charged Ions through a Single Glass Macrocapillary and Polycarbonate Nanocapillary Foils von Ayyad, A M, Dassanayake, B S, Keerthisinghe, D, DeSilva, G G, Elkafrawy, T, Kayani, N, Tanis, J A

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Effect of fluoride supply on fluoride concentrations in five pasture species: Levels required to reach phytotoxic or potentially zootoxic concentrations in plant tissue von Stevens, D. P., McLaughlin, M. J., Randall, P. J., Keerthisinghe, G.

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Importance of exchangeable and nonexchangeable soil NH4+ in nitrogen nutrition of lowland rice von Keerthisinghe, G, De Datta, S.K, Mengel, K

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Quantity and intensity relationships in predicting P availability of soils in Sri Lanka von Kumaragamage, Darshani, Keerthisinghe, Gamini

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