Doses, fontes e épocas de aplicação de nitrogênio em trigo irrigado em plantio direto

By M. T. Filho, S. Buzetti, M. Andreotti, O. Arf, C. Benett. 2010

94 citations recorded by the source corpus.

The objective of this work was to evaluate the effects of different doses and sources of nitrogen, applied at sowing or at side-dressing, on the yied components and grain yield of irrigated wheat, under no-tillage. Nitrogen sources with or without the nitrification inhibitor (Entec) were used for applications at sowing or at side-dressing periods. Wheat was cultivated in Selviria, state of Mato Grosso do Sul, Brazil in a low-altitude Cerrado region. A randomized block design was used in the factorial arrangement 5x3x2, with four replicates. Treatments consisted of the combination of: five N doses, 0, 50, 100, 150 and 200 kg ha-1; three sources, Entec, ammonium sulfate, and urea; and two application times, at sowing, near of the lines, or at side-dressing. The different N sources had similar influence on plants height and grain yield of irrigated wheat. Nitrogen applications, totally at sowing and in the traditional way, at sowing and at side-dressing, are both equally viable. The increment of the N doses up to 121.5 kg ha-1 increases the grain yield, independently of application time and N source.

Subfields: Agronomy and Crop Science, Plant Science

View Paper: https://www.semanticscholar.org/paper/376058d6a49a2bf9f9407ae95cf25a31b552ba25