Nitrogen fertilization management in no-tillage maize with different winter crops

Authors

  • André Mendes Coutinho Neto Universidade Estadual Paulista
  • Edson Luiz Mendes Coutinho Universidade Estadual Paulista
  • Valdeci Orioli Júnior Universidade Estadual Paulista
  • José Eduardo Corá Universidade Estadual Paulista
  • Alysson Roberto Baizi e Silva Empresa Brasileira de Pesquisa Agropecuária
  • Marcelo Scatolin Universidade Estadual Paulista

Abstract

The nitrogen (N) utilization by maize grown in a no-tillage system is dependent on the quality of the preceding crop residues, which may promote differences in N fertilization efficiency with respect to time. Thus, the purpose of this study was to evaluate the nutritional state, dry matter production and grain yield of maize grown in a clayey soil (Typic Acrustox) under a no-tillage system. The split-plot experimental design was set up in randomized complete blocks with three replications, in which the main plot was treated with different N application strategies and the split-plots were planted with winter crops (soybean and maize). The fertilizer strategies (rate: 120 kg ha-1 of N) used were as follows: (0 - 0), (20 - 100), (60 - 60), (120 - 0) and (0 - 120), with the first number corresponding to the rate of N (kg ha-1) applied before planting and the second number corresponding to the top dressing rate (V4-5 stage). Nitrogen fertilization raised the N content (in shoots and leaves) and maize yield (in the shoot dry matter and grain). The maize grown after soybean had both greater N concentrations and production (dry matter and grain) relative to the maize grown after maize. Applying 120 kg ha-1 N did not significantly affect the evaluated variables, regardless of the winter crop.

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Published

2013-12-03

How to Cite

COUTINHO NETO, A.M., COUTINHO, E.L.M., ORIOLI JÚNIOR, V., CORÁ, J.E., SILVA, A.R.B. e and SCATOLIN, M., 2013. Nitrogen fertilization management in no-tillage maize with different winter crops . Bioscience Journal [online], vol. 29, no. 6, pp. 1981–1988. [Accessed29 November 2022]. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/15062.

Issue

Section

Agricultural Sciences