Variety-Specific Nitrogen Fertilizer Recommendation for Lowland Rice

摘要: Abstract Nitrogen (N) is the most limiting nutrient for rice in tropical Asian soils, and almost every farmer has to apply costly N fertilizer get a desirable yield of rice. Modern high yielding varieties may have differences accumulating using from soil applied fertilizer. An experiment with 10 genotypes was conducted estimate their efficiency use inherent N, predict optimum input yield. The were grown at two levels: 0 130 kg N ha−1. Under control plots, grain varied 3.26 4.63 t ha−1, range treated plots 4.69–6.24 t ha−1. tested straw concentration (0.45%–0.73%) (0.81–1.53%). Therefore, requirement among 9.02 13.78 kg t−1 10.93 15.66 kg t−1 N-treated plots. Despite modern plant characteristics, ...