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- W2182942529 abstract "Current fertilizer N recommendations in India typically consist of fixed rate and timings for large rice growing tracts. These “blanket” recommendations have served their purpose in producing good yields, but they are limited in their capacity to increase nutrient use efficiency. And many times, to ensure high yields, farmers apply fertilizer N rates even higher than the blanket recommendation. Overapplication of N in cereal crops leads to further lowering of N fertilizer recovery efficiency. The blanket recommendations are also not responsive to temporal variations in crop N demand. Use of N in excess of crop requirement and inefficient splitting of N applications are the main reasons for low N use efficiency in rice. Since improving the synchrony between crop N demand and the N supply from soil and/or the applied N fertilizer is likely to be the most promising strategy to increase N use efficiency, the split application of fertilizer N is going to remain an essential component of fertilizer N management strategies in rice. Real-time corrective N management is based on periodic assessment of plant N status, and the application of fertilizer N is delayed until N deficiency symptoms start to appear. Thus, a key ingredient for real-time N management is a method of rapid assessment of leaf N content that is closely related to photosynthetic rate and biomass production and is a sensitive indicator of changes in crop N demand within the growing season. As rice leaf color is a good indicator of leaf N content, the LCC, developed through collaboration of the International Rice" @default.
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- W2182942529 date "2010-01-01" @default.
- W2182942529 modified "2023-09-27" @default.
- W2182942529 title "On-farm Evaluation of Real-time Nitrogen Management in Rice" @default.
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