SOURCES OF NITROGEN AND MODES OF APPLICATION IN MAIZE UNDER NO TILLAGE CROP
DOI:
https://doi.org/10.18011/bioeng2015v9n2p191-196Keywords:
topdressing, incorporation, nitrogen management, CerradoAbstract
Maize is one of the most demanding cultures fertilizers, especially nitrogen. Thus this study aimed to evaluate, in cerrado soil, the effect of N sources and application methods with and without merger by irrigation water, in maize in no-till system. The experiment was conducted in red Latosol. The experimental design was randomized blocks with 12 treatments in a factorial 3x2x2, with four replications. Treatments consisted of two N sources (urea, ammonium nitrate and witness - without N), two application methods (broadcasted and banded) with or without incorporating with blade irrigation of 10 mm. were evaluated: the mass of one hundred grains and grain yield (kg ha-1). It can be concluded that there was effect of nitrogen fertilization, and ammonium nitrate provided the highest grain yield. Regarding the picture modes when N fertilizer was applied to haul obtained the highest grain yield. Since the incorporation of the N irrigation with 10 mm blade, but it influenced the mass of grains, not increased the grain yield.
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