ANTICIPATION OF NITROGEN FERTILIZATION OF CORN AND FERTILIZERS FOR SOWING – USE OF EFFICIENCY INCREASED NITROGEN FERTILIZERS
Keywords:
anticipated fertilization; nitrogen fertilizer; no-tillage systemAbstract
Fertilizers with increased efficiency, which provide a reduction in nitrogen (N) losses, can be a viable alternatives to provide anticipation of top dressing for sowing and reduce operations for the rural producer. The objective of this work was to determine the effect of the time of application of nitrogen fertilizers with increased efficiency on the grain yield of corn and common bean in the Cerrado region in the no-tillage system. The experiment was carried out during two agricultural seasons under field conditions. The experimental design was in randomized complete blocks, in a 2x4+1 factorial scheme, with four replications. Treatments consisted of a combination of two nitrogen application times (sowing and conventional) with four types of nitrogen fertilizers (1. urea + NBPT + Zeolite), 2. (urea + B + Cu + Zeolite), 3. Super N and 4. Urea). Additionally, a control treatment (without N) was included. In corn, cultivated in summer, 150 kg ha-1 of N were applied and in common bean, cultivated in winter, 90 kg ha-1 of N were applied. It was concluded that nitrogen sources and nitrogen application time did not affect corn grain yield, yield components and common bean grain yield. The application of nitrogen in corn or common bean provided significant increases in crop grain yield.
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