8. New developments in nitrogen fertilizers for rice |
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| Authors: | LJ Youngdahl MS Lupin ET Craswell |
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| Affiliation: | (1) Present address: Dead Sea Works, Ltd., Beer-Sheva, Israel;(2) Present address: Australian Centre for International Agricultural Research, Canberra, A.C.T., Australia;(3) International Fertilizer Development Center (IFDC), P.O. Box 2040, 35662 Muscle Shoals, Alabama, USA |
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| Abstract: | The efficiency of nitrogen (N) fertilizer products and practices currently used on rice is low, and improving this efficiency would be very beneficial to rice-growing countries. The development of new N fertilizers is best achieved by following a logical sequence of testing and evaluation procedures in a variety of settings from the laboratory to the farmer's field. Novel N fertilizers currently at various stages of testing include urea supergranules for deep placement, urea coated with various materials to control the N release rate, mixtures of a urease inhibitor with urea to reduce losses, and organic N sources other than urea. |
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| Keywords: | Nitrogen fertilizers rice fertilizer efficiency |
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