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Nitrogen transformation in flooded maahas clay with and without rice [microform]
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Effects of nitrogenforms and methods of application for lowlnd rice [microform]
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Nitrogen fixation by Rhizobiun-legume association and in the rhizosphere of monocotyledonous plants [microform].
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In situ determination of biological nitrogen fixation by blue-green algae in lowland rice fields [microform].
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Water adequacy at the farm level its influence on input use and rice yield [microform]
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Methods, sources and time of nitrogen application for upland rice [microform]
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