African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6574

Full Length Research Paper

Cotton growth in response to water supply in red Latosol cerrado

Vitor Marques Vidal
  • Vitor Marques Vidal
  • Federal Institute of Goiás (Instituto Federal Goiano – IF Goiano), Campus Rio Verde, Goiás GO Brazil.
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Frederico Antonio Loureiro Soares
  • Frederico Antonio Loureiro Soares
  • Federal Institute of Goiás (Instituto Federal Goiano – IF Goiano), Campus Rio Verde, Goiás GO Brazil.
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Marconi Batista Teixeira
  • Marconi Batista Teixeira
  • Federal Institute of Goiás (Instituto Federal Goiano – IF Goiano), Campus Rio Verde, Goiás GO Brazil.
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Fernando Nobre Cunha
  • Fernando Nobre Cunha
  • Federal Institute of Goiás (Instituto Federal Goiano – IF Goiano), Campus Rio Verde, Goiás GO Brazil.
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Leonardo Nazario Silva dos Santos
  • Leonardo Nazario Silva dos Santos
  • Federal Institute of Goiás (Instituto Federal Goiano – IF Goiano), Campus Rio Verde, Goiás GO Brazil.
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Cicero Teixeira Silva Costa
  • Cicero Teixeira Silva Costa
  • Federal Institute of Goiás (Instituto Federal Goiano – IF Goiano), Campus Rio Verde, Goiás GO Brazil.
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Giovani Santos Moraes
  • Giovani Santos Moraes
  • Federal Institute of Goiás (Instituto Federal Goiano – IF Goiano), Campus Rio Verde, Goiás GO Brazil.
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Washington Bezerra
  • Washington Bezerra
  • Federal Institute of Goiás (Instituto Federal Goiano – IF Goiano), Campus Rio Verde, Goiás GO Brazil.
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Gustavo da Silva Vieira
  • Gustavo da Silva Vieira
  • Federal Institute of Goiás (Instituto Federal Goiano – IF Goiano), Campus Rio Verde, Goiás GO Brazil.
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Wilker Alves Morais
  • Wilker Alves Morais
  • Federal Institute of Goiás (Instituto Federal Goiano – IF Goiano), Campus Rio Verde, Goiás GO Brazil.
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Aurélio Ferreira Melo
  • Aurélio Ferreira Melo
  • Federal Institute of Goiás (Instituto Federal Goiano – IF Goiano), Campus Rio Verde, Goiás GO Brazil.
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Ana Carolina Oliveira Horschutz
  • Ana Carolina Oliveira Horschutz
  • Federal Institute of Goiás (Instituto Federal Goiano – IF Goiano), Campus Rio Verde, Goiás GO Brazil.
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Jenifer Kelly Ferreira dos Santos
  • Jenifer Kelly Ferreira dos Santos
  • Federal Institute of Goiás (Instituto Federal Goiano – IF Goiano), Campus Rio Verde, Goiás GO Brazil.
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Igor Olacir Fernandes Silva
  • Igor Olacir Fernandes Silva
  • Federal Institute of Goiás (Instituto Federal Goiano – IF Goiano), Campus Rio Verde, Goiás GO Brazil.
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Leandro Spíndola Pereira
  • Leandro Spíndola Pereira
  • Federal Institute of Goiás (Instituto Federal Goiano – IF Goiano), Campus Rio Verde, Goiás GO Brazil.
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  •  Received: 18 November 2016
  •  Accepted: 24 January 2017
  •  Published: 08 March 2018

Abstract

There are few studies that demonstrate the influence of water stress in biometric variables and cotton growth. Thus, the objective of this study was to evaluate different levels of water supply in the BRS 2 cotton growth, in the field of Campus Rio Verde - GO, in 2015. Experimental design used was randomized blocks, with three replications in a split-plot scheme of 5 x 4 with five water replacements (WR) (25, 50, 75, 100 and 125%) of evapotranspiration, and four times of evaluation (ET) during the growth cycle (40-60, 61-80, 81-100 and 1-20 days after emergence). The variables analyzed were plant height (PH), leaf area (LA), dry phytomass stem (DPS), dry phytomass of leaves (DPL), dry phytomass of reproductive organ (DPRO), dry phytomass of aerial part (DPAP), absolute growth rate (AGR), relative growth rate (RGR), net assimilation rate (NAR) and leaf area ratio (LAR). The behavior of PH and LA under the influence of water levels revealed that for a better performance of studied variables, it is important to consider the irrigation management, besides the crop coefficient. Water replacement influenced the cotton growth. Low cotton growth rate was caused by the reduction of water supply until the end of growth cycle.
 
Key words: Gossypium hirsutum L., dry phytomass, drip irrigation, crop evapotranspiration.