Yield response of wetland rice to band placement of urea solution in various soils in the tropics |
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Authors: | H F Schnier S K De Datta A M Fagi M Eaqub Faruque Ahmed R Tejasarwana A Mazid |
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Affiliation: | (1) International Rice Research Institute (IRRI), P.O. Box 933, Manila, Philippines;(2) P.O. Box 41607, Nairobi, Kenya;(3) Sukamandi Research Institute for Food Crops (SURIF), Sukamandi, West Java, Indonesia;(4) Bangladesh Agricultural University (BAU), Mymensingh, Bangladesh;(5) Bangladesh Rice Research Institute (BRRI), Joydebpur, Gazipur, Bangladesh |
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Abstract: | Alternative N-fertilizer management practices are needed to increase productivity and the N-use efficiency of flooded rice (Oryza sativa L.). Seven field experiments were conducted at various sites in Bangladesh and Indonesia to evaluate the effect of time and method of fertilizer-N application on grain yield in transplanted rice. Conventional fertilizer application was compared with band placement of liquid urea using a mechanical push-type injector and point placement of urea supergranules. With band placement, grain yields were up to 38 and 55% higher than with researchers' and farmers' practices, respectively, and similar to those with point placement of urea supergranules. |
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