African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6578

Full Length Research Paper

Agronomic performance of RR® soybean cultivars using different pre-sowing desiccation periods and distinct post-emergence herbicides

Guilherme Felisberto
  • Guilherme Felisberto
  • Department of Plant Production Campus Luiz de Queiroz, ESALQ, 13418-900, Piracicaba, SP, Brazil.
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Adriano Teodoro Bruzi
  • Adriano Teodoro Bruzi
  • Department of Plant Production, Campus Universitario, UFLA, 37200-000, Lavras, MG, Brazil.
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Alan Mario Zuffo
  • Alan Mario Zuffo
  • Department of Plant Production, Campus Universitario, UFLA, 37200-000, Lavras, MG, Brazil.
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Everton Vinicius Zambiazzi
  • Everton Vinicius Zambiazzi
  • Department of Plant Production, Campus Universitario, UFLA, 37200-000, Lavras, MG, Brazil.
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Igor Oliveri Soares
  • Igor Oliveri Soares
  • Department of Plant Production, Campus Universitario, UFLA, 37200-000, Lavras, MG, Brazil.
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Pedro Milanez de Rezende
  • Pedro Milanez de Rezende
  • Department of Plant Production, Campus Universitario, UFLA, 37200-000, Lavras, MG, Brazil.
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Flavia Barbosa Silva Botelho
  • Flavia Barbosa Silva Botelho
  • Department of Plant Production, Campus Universitario, UFLA, 37200-000, Lavras, MG, Brazil.
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  •  Received: 27 April 2015
  •  Accepted: 12 August 2015
  •  Published: 20 August 2015

Abstract

The current study aims to measure the effect of pre-sowing desiccation period and verify the influence of post-emergence herbicide on soybean agronomic traits and grain yield. The experiments were carried out according to a randomized complete block design with three replications during two crop seasons (2012/13 and 2013/14), using split plot design. Five soybean cultivars were used (BRS Favorita RR®, TMG 1179 RR®, TMG 1176 RR®, Anta 82 RR®, NS 7100 RR®). Two desiccation periods were adopted 7 days before sowing and just before sowing. Two types of weed management were tested in post-emergence - using glyphosate (Roundup Ready®) and a soybean selective herbicide (Robust®). During the 2013/2014 crop season, manual weeding was also used. The evaluated traits were plant height, first pod insertion, number of pods per plant and number of seeds per pod, 1,000-grain weight and grain yield. Considering the distinct post-emergence herbicides, there was no significant difference between glyphosate and Robust®. Nevertheless, the desiccation period showed significant differences in plant height, number of pods per plant and grain yield. The soybean grain yield was higher when desiccation was done 7 days before sowing. Therefore, an association between desiccation period and soybean performance was assumed.

 

Key words: Glycine Max (L.) Merril, inhibitors of the 5-enolpyruvylshikimate-3-phosphate synthase enzyme, Roundup Ready®, Robust®.