Nitrogen use efficiency in selected rice ( Oryza sativa L.) genotypes under different water regimes and nitrogen levels by Haefele, S.M., Jabbar, S.M.A., Siopongco, J.D.L.C., Tirol-Padre, A., Amarante, S.T., Sta Cruz, P.C., Cosico, W.C.

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Soil organic matter and the indigenous nitrogen supply of intensive irrigated rice systems in the tropics by Cassman, K.G., Dobermann, A., Sta Cruz, P.C., Gines, G.C., Samson, M.I., Descalsota, J.P., Alcantara, J.M., Dizon, M.A., Olk, D.C.

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Crop residue management to sustain soil fertility and irrigated rice yields by Surekha, K, Kumari, A.P. Padma, Reddy, M. Narayana, Satyanarayana, K, Sta Cruz, P.C

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Fertilizer inputs, nutrient balance and soil nutrient-supplying power in intensive, irrigated rice systems. 1. Potassium uptake and K balance by Dobermann, A. (International Rice Research Inst., Manila (Philippines).), Sta Cruz, P.C, Cassman, K.G

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Effect of Straw on Yield Components of Rice (Oryza sativa L.) Under Rice-Rice Cropping System by Surekha, K, Pavan Chandra Reddy, K, Padma Kumari, A.P, Sta Cruz, P.C

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Fertilizer inputs, nutrient balance and soil nutrient-supplying power in intensive, irrigated rice systems. 2. Effective soil K-supplying capacity by Dobermann, A. (International Rice Research Inst., Manila (Philippines)), Cassman, K.G, Sta Cruz, P.C, Adviento, M.A, Pampolino, M.F

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Assessment of major soil series grown to sugarcane under different land utilization types in Negros Occidental, Philippines by Vallejera-Corsiga, C A E, Badayos, R B, Sanchez, P B, Paterno, E S, Sta. Cruz, P C

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