Citation Information

  • Title : Time of application and doses of N effects on the C/N ratio of the straw cover and on growth and productivity of maize plants in a no-tillage system.; Doses e epocas de aplicacao de nitrogenio: influencia na relacao C/N da palhada no desenvolvimento e produtividade do milho em sistema plantio direto.
  • Source : Científica (Jaboticabal)
  • Publisher : Faculdade de Ciências Agrárias e Veterinárias, Câmpus de Jaboticabal, UNESP
  • Volume : 40
  • Issue : 1
  • Pages : 77-89
  • Year : 2012
  • Document Type : Journal Article
  • Language : Spanish
  • Authors:
    • Rodrigues, J. G. L.
    • Fernandes, D. M.
    • Bicudo, S. J.
    • Nascimento, F. M.
    • Fernandes, J. C.
    • Furtado, M. B.
  • Climates: Temperate (C). Humid subtropical (Cwa, Cfa).
  • Cropping Systems: Maize. No-till cropping systems.
  • Countries: Brazil.

Summary

The objective of this research work was to evaluate the effects of doses and time of application of N on the C/N ratio of the straw cover and on the growth and productivity of maize plants growing in a no tillage system. The experiment was carried out at the Experimental Farm of the College of Agriculture of the Sao Paulo State University (UNESP) on its campus of Botucatu, state of Sao Paulo, Brazil. The treatments were distributed in the field according to a randomized complete block design in a split plot arrangement. The treatments consisted of four doses of N (0, 20, 40, and 60 kg ha -1) applied to oat crop and N doses (60, 80, 100, and 120 kg ha -1) sidedressed to corn. The development and productivity of the maize crop in a no-tillage system were found to be dependent of the C/N ratio and the straw cover. The response of the maize plants to the early application of N is dependent on doses and time of application.

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