African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6848

Full Length Research Paper

The nitrogen supply in wheat cultivation dependent on weather conditions and succession system in southern Brazil

Emilio Ghisleni Arenhardt*
  • Emilio Ghisleni Arenhardt*
  • Department of Crop Plants, Federal University of Rio Grande do Sul, Avenue Bento Goncalves 7712, Zip Code: 91540-000, Porto Alegre, RS, Brazil.
  • Google Scholar
Jose Antonio Gonzalez da Silva
  • Jose Antonio Gonzalez da Silva
  • Department of Agrarian Studies, Regional Northwest University of Rio Grande do Sul, Comercio Street, Number 3000, Zip Code: 98700-000 Ijuí, RS, Brazil.
  • Google Scholar
Ewerton Gewehr
  • Ewerton Gewehr
  • Faculty of Agronomy Eliseu Maciel, Federal University of Pelotas, Center for Genomics and Plant Breeding, Zip Code: 96001-970, P. O. Box 354, Pelotas, Rio Grande do Sul, Brazil.
  • Google Scholar
Antonio Costa de Oliveira
  • Antonio Costa de Oliveira
  • Faculty of Agronomy Eliseu Maciel, Federal University of Pelotas, Center for Genomics and Plant Breeding, Zip Code: 96001-970, P. O. Box 354, Pelotas, Rio Grande do Sul, Brazil.
  • Google Scholar
Manuel Osorio Binelo
  • Manuel Osorio Binelo
  • Department of Exact Sciences and Engineering, Regional University of the Northwest of Rio Grande do Sul, Street Lulu Ingelfritz 480, Zip Code: 98700-000, Ijuí, RS, Brazil.
  • Google Scholar
Antonio Carlos Valdiero
  • Antonio Carlos Valdiero
  • Department of Exact Sciences and Engineering, Regional University of the Northwest of Rio Grande do Sul, Street Lulu Ingelfritz 480, Zip Code: 98700-000, Ijuí, RS, Brazil.
  • Google Scholar
Maria Eduarda Gzergorczick
  • Maria Eduarda Gzergorczick
  • Department of Agrarian Studies, Regional Northwest University of Rio Grande do Sul, Comercio Street, Number 3000, Zip Code: 98700-000 Ijuí, RS, Brazil.
  • Google Scholar
Andressa Raquel Cyzeski de Lima
  • Andressa Raquel Cyzeski de Lima
  • Department of Agrarian Studies, Regional Northwest University of Rio Grande do Sul, Comercio Street, Number 3000, Zip Code: 98700-000 Ijuí, RS, Brazil.
  • Google Scholar
Emilio Ghisleni Arenhardt
  • Emilio Ghisleni Arenhardt
  • Department of Crop Plants, Federal University of Rio Grande do Sul, Avenue Bento Gonçalves 7712, Zip Code: 91540-000, Porto Alegre, RS, Brazil.
  • Google Scholar
José Antonio Gonzalez da Silva
  • José Antonio Gonzalez da Silva
  • Department of Agrarian Studies, Regional Northwest University of Rio Grande do Sul, Comércio Street, Number 3000, Zip Code: 98700-000 Ijuí, RS, Brazil.
  • Google Scholar
Ewerton Gewehr
  • Ewerton Gewehr
  • Faculty of Agronomy Eliseu Maciel, Federal University of Pelotas, Center for Genomics and Plant Breeding, Zip Code: 96001-970, P. O. Box 354, Pelotas, Rio Grande do Sul, Brazil.
  • Google Scholar
Antonio Costa de Oliveira
  • Antonio Costa de Oliveira
  • Faculty of Agronomy Eliseu Maciel, Federal University of Pelotas, Center for Genomics and Plant Breeding, Zip Code: 96001-970, P. O. Box 354, Pelotas, Rio Grande do Sul, Brazil.
  • Google Scholar
Manuel Osorio Binelo
  • Manuel Osorio Binelo
  • Department of Exact Sciences and Engineering, Regional University of the Northwest of Rio Grande do Sul, Street Lulu Ingelfritz 480, Zip Code: 98700-000, Ijuí, RS, Brazil.
  • Google Scholar
Antonio Carlos Valdiero
  • Antonio Carlos Valdiero
  • Department of Exact Sciences and Engineering, Regional University of the Northwest of Rio Grande do Sul, Street Lulu Ingelfritz 480, Zip Code: 98700-000, Ijuí, RS, Brazil.
  • Google Scholar
Maria Eduarda Gzergorczick
  • Maria Eduarda Gzergorczick
  • Department of Agrarian Studies, Regional Northwest University of Rio Grande do Sul, Comércio Street, Number 3000, Zip Code: 98700-000 Ijuí, RS, Brazil.
  • Google Scholar
Andressa Raquel Cyzeski de Lima
  • Andressa Raquel Cyzeski de Lima
  • Department of Agrarian Studies, Regional Northwest University of Rio Grande do Sul, Comércio Street, Number 3000, Zip Code: 98700-000 Ijuí, RS, Brazil.
  • Google Scholar


  •  Received: 16 June 2015
  •  Accepted: 06 October 2015
  •  Published: 26 November 2015

Abstract

High wheat yields, besides the genetic potential and edaphoclimatic conditions, are obtained by proper management and nitrogen use. The objective of the study was to define the most appropriate time for N-fertilizer application, considering the range of greatest wheat requirements, dependent on the succession system type and the predictability of favorable and unfavorable years. The study was carried out in the 2008 to 2012 years, in Augusto Pestana, Rio Grande do Sul, Brazil. The experimental design was randomized blocks with four replications, with N-fertilizer application at 0, 10, 30 and 60 days after emergence, considering the corn/wheat and soybean/wheat succession system. The study found that the best time for nitrogen fertilizer application on wheat is mostly influenced by the year of cultivation and is less influenced by the succession system type. The appropriate time for the N-fertilizer application in favorable years of cultivation was about 45 days after emergence. In unfavorable years, it must be anticipated. Regardless of the cultivation year and the succession system type, the N-fertilization at 30 days after emergence evidenced the highest means as the most stabile grain yield.

Key words: Wheat Triticum aestivum, N-fertilizer time, optimization.