Carbon isotope discrimination at vegetative stage as an indicator of yield and water use efficiency of spring wheat (Triticum turgidum L. var. durum) von Kirda, C. (International Atomic Energy Agency, Vienna (Austria). Joint FAO/IAEA Div.), Mohamed, A.R.A.G, Kumarasinghe, K.S, Montenegro, A, Zapata, F

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Nitrogen fixation and yield of cowpea ( Vigna unguiculata) as influenced by cultivar and Bradyrhizobium strain von Awonaike, K.O., Kumarasinghe, K.S., Danso, S.K.A.

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(13)C isotope discrimination correlates with biological nitrogen fixation in soybean (Glycine max (L.) Merrill) von Kumarasinghe, K.S. (International Atomic Energy Agency, Vienna (Austria). Joint FAO/IAEA Div.), Kirda, C, Mohamed, A.R.A.G, Zapata, F, Danso, S.K.A

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Assessment of potential sources of error in nitrogen fixation measurements by the nitrogen-15 isotope dilution technique von Danso, S.K.A. (FAO/IAEA, Vienna (Austria). Div. of Nuclear Techniques in Food and Agriculture), Kumarasinghe, K.S

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Azolla as a nitrogen fertilizer in sustainable rice production von Kumarasinghe K.S, Eskew D.L

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Field evaluation of N2 fixation and N partitioning in climbing bean (Phaseolus vulgaris L.) using 15N von Kumarasinghe, K.S, Danso, S.K.A, Zapata, F

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Applications of 15N isotope techniques in Azolla-rice studies von Kumarasinghe, K.S, Eskew, D.L

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Evaluation of the availability of Azolla-N and urea-N to rice using ¹⁵N von KUMARASINGHE, K.S., ZAPATA, F., KOVACS, G., ESKEW, D.L., DANSO, S.K.A.

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Carbon-13 discrimination as a criterion for identifying high water use efficiency wheat cultivars under water deficit conditions von Bazza, M. (Institut Agronomique et Veterinaire Hassan II, Rabat (Morocco). Dept. de l'Equipement et de l'Hydraulique), Kumarasinghe, K.S

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