Sources and managements of nitrogen fertilization in cotton plants

Authors

  • Flávio Hiroshi Kaneko São Paulo State University image/svg+xml
  • Aguinaldo José Freitas Leal Universidade Federal de Mato Grosso do Sul (UFMS)
  • Jefferson Luís Anselmo São Paulo State University image/svg+xml
  • Salatiér Buzetti São Paulo State University image/svg+xml
  • Fábio da Silva Tosta Universidade Federal de Mato Grosso do Sul (UFMS)

DOI:

https://doi.org/10.5216/pat.v43i1.19581

Keywords:

Gossypium hirsutum L., urease inhibitor, topdressing fertilization.

Abstract

The development of new technologies that aim at increasing the efficiency of nitrogen (N) fertilizers is essential for the agricultural sustainability. Thus, this study aimed at evaluating the cotton plants response to different topdressing N sources, under no-till system, in the Brazilian Savannah, in the 2008/2009 and 2009/2010 growing seasons. Treatments consisted of three N sources (urea, urea with urease inhibitor and ammonium nitrate) and two topdressing N fertilization applications (one application at V5 and two applications, as it follows: 50% at V5 + 50% at B6), plus a control (without topdressing N). The ammonium nitrate application provided the best results for both seasons, while the urea with urease inhibitor differed from urea only in the first season. The topdressing N fertilization provided different results among crops, being dependent of environmental conditions. If there is sufficient rainfall to incorporate the N to soil, better yields can be expected, when all the topdressing fertilization takes place at the V5 stage.

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Author Biographies

  • Flávio Hiroshi Kaneko, São Paulo State University
    Doutorando em agronomia pelo Programa de pós graduação em agronomia (Sistemas de Produção) da UNESP de Ilha Solteira
  • Aguinaldo José Freitas Leal, Universidade Federal de Mato Grosso do Sul (UFMS)
    Docente do programa de pós graduação em agronomia da UFMS campus de  Chapadão do Sul
  • Jefferson Luís Anselmo, São Paulo State University
    Doutorando em agronomia pelo Programa de pós graduação em agronomia (Sistemas de Produção) da UNESP de Ilha Solteira
  • Salatiér Buzetti, São Paulo State University
    Docente do Programa de pós graduação em agronomia (Sistemas de Produção) da UNESP de Ilha Solteira
  • Fábio da Silva Tosta, Universidade Federal de Mato Grosso do Sul (UFMS)
    Mestrando ema agronomia pelo Programa de pós graduação em agronomia da UFMS campus de Chapadão do Sul

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Published

2013-04-08

Issue

v. 43, n. 1, Jan./Mar. 2013

Section

Soil Science

License

Authors will not be paid for published articles and must waive their copyright in favor of the PAT journal. On the other hand, they are solely responsible for the content of those articles, even if the Editor holds the right to adjust them to the norms of the journal. Authors are allowed to publish their articles simultaneously in their institutional repositories, as soon as the original publication at the PAT journal is mentioned.

How to Cite

KANEKO, F. H. et al. Sources and managements of nitrogen fertilization in cotton plants. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], v. 43, n. 1, p. 57–63, 8 Apr.2013.