African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6691

Full Length Research Paper

The effect of nitrogen dose on the yield indicators of oats

Rubia Diana Mantai
  • Rubia Diana Mantai
  • Department of Exact Sciences and Engineering, Regional University of the Northwestern of Rio Grande do Sul State (UNIJUI), Street Lulu Ingelfritz 480, Zip code: 98700-000, Ijui, RS, Brazil.
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Jose Antonio Gonzalez da Silva
  • Jose Antonio Gonzalez da Silva
  • Department of Agrarian Studies, Regional University of the Northwestern of Rio Grande do Sul State (UNIJUI), Street do Comercio 3000, Zip code: 98700-000, Ijui, RS, Brazil.
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Emilio Ghisleni Arenhardt
  • Emilio Ghisleni Arenhardt
  • Department of Crop Plants, Federal University of Rio Grande do Sul (UFRGS), Avenue Bento Goncalves 7712, Zip code: 91540-000, Porto Alegre, RS, Brazil.
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Thiago Gomes Heck
  • Thiago Gomes Heck
  • Department of Life Sciences, Regional University of Northwestern of Rio Grande do Sul State (UNIJUI), Street do Comercio 3000, Zip code: 98700-000, Ijui, RS, Brazil.
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Airam Teresa Zago Romcy Sausen
  • Airam Teresa Zago Romcy Sausen
  • Department of Exact Sciences and Engineering, Regional University of the Northwestern of Rio Grande do Sul State (UNIJUI), Street Lulu Ingelfritz 480, Zip code: 98700-000, Ijui, RS, Brazil.
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Cleusa Adriane Menegassi Bianchi Kruger
  • Cleusa Adriane Menegassi Bianchi Kruger
  • Department of Agrarian Studies, Regional University of the Northwestern of Rio Grande do Sul State (UNIJUI), Street do Comercio 3000, Zip code: 98700-000, Ijui, RS, Brazil.
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Amanda Moraes Cardoso
  • Amanda Moraes Cardoso
  • Department of Agrarian Studies, Regional University of the Northwestern of Rio Grande do Sul State (UNIJUI), Street do Comercio 3000, Zip code: 98700-000, Ijui, RS, Brazil.
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Constantino Jose Goi Neto
  • Constantino Jose Goi Neto
  • Department of Agrarian Studies, Regional University of the Northwestern of Rio Grande do Sul State (UNIJUI), Street do Comercio 3000, Zip code: 98700-000, Ijui, RS, Brazil.
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Dionatan Ketzer Krysczun
  • Dionatan Ketzer Krysczun
  • Department of Agrarian Studies, Regional University of the Northwestern of Rio Grande do Sul State (UNIJUI), Street do Comercio 3000, Zip code: 98700-000, Ijui, RS, Brazil.
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  •  Received: 24 April 2014
  •  Accepted: 04 July 2015
  •  Published: 24 September 2015

Abstract

Studies on the effect of nitrogen dose on the yield indicators of oats can help cultivation recommendations. This study aims to study the simulation of the productivity indicators of oats based on optimal dose of nitrogen on grain yield expression, under the agricultural stand conditions of high and low availability of nitrogen and favorable and unfavorable weather conditions. Studies were conducted in 2011 and 2012 years, in a complete randomized block design with four replications in a 2 x 4 factorial arrangement to cultivars (Barbarasul and Brisasul) and nitrogen doses (0, 30, 60 and 120 kg ha-1) in the soybean/oat and corn/oat succession system. In each succession system, two experiments were conducted, one for quantifying the production of biomass and another to estimate grain yield. The use of nitrogen introduced quadratic regression model on the grain yield and harvest index, showed linear behavior in the biological yield and straw in the two crop succession system. The difference of this behavior is caused by the biological, straw and also by year favorable or unfavorable. The simulation of the nitrogen optimal dose for the production of grain confirms major efficiency of Brisasul cultivar in the expression of grain yield indicators.

 

Key words: Avena sativa L., crop succession, nitrogen rates, yield indicators, simulation.