African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6401

Full Length Research Paper

Behavior and water needs of sesame under different irrigation regimes: Analysis of growth

José Rodrigues Pereira
  • José Rodrigues Pereira
  • Embrapa Cotton, Rua Oswaldo Cruz, 1.143 - Centenário, CEP 58.428-095, Campina Grande, Paraíba State, Brazil
  • Google Scholar
Hugo Orlando Carvallo Guerra2
  • Hugo Orlando Carvallo Guerra2
  • Campina Grande Federal University – UFCG, Rua Aprígio Veloso, 882 - Universitário, CEP 58.429-140, Campina Grande, Paraíba State, Brazil
  • Google Scholar
José Renato Cortez Bezerra
  • José Renato Cortez Bezerra
  • Embrapa Cotton, Rua Oswaldo Cruz, 1.143 - Centenário, CEP 58.428-095, Campina Grande, Paraíba State, Brazil
  • Google Scholar
João Henrique Zonta
  • João Henrique Zonta
  • Embrapa Cotton, Rua Oswaldo Cruz, 1.143 - Centenário, CEP 58.428-095, Campina Grande, Paraíba State, Brazil
  • Google Scholar
Whéllyson Pereira Araújo
  • Whéllyson Pereira Araújo
  • Campina Grande Federal University – UFCG, Rua Aprígio Veloso, 882 - Universitário, CEP 58.429-140, Campina Grande, Paraíba State, Brazil
  • Google Scholar
Érica Samara Araújo Barbosa de Almeida
  • Érica Samara Araújo Barbosa de Almeida
  • Campina Grande Federal University – UFCG, Rua Aprígio Veloso, 882 - Universitário, CEP 58.429-140, Campina Grande, Paraíba State, Brazil
  • Google Scholar


  •  Received: 28 November 2016
  •  Accepted: 16 March 2017
  •  Published: 18 May 2017

Abstract

The aim of this work was to evaluate the growth of sesame BRS 196 CNPA G4 in different irrigation depths (305, 436, 567 and 698 mm), applied on the basis of crop evapotranspiration– ETc (the depth of 567 mm was equal to 100% ETc). It was conducted at Embrapa Cotton, in Barbalha County, Ceará State, Brazil, 2012. The experiment was in randomized blocks, with treatments distributed in plots with three replications. The ETc was calculated by multiplying the reference evapotranspiration (ETo), determined by the Penman-Monteith method, by the crop coefficients (Kc), recommended for each phenological stage of the crop and by FAO. For the other irrigation treatments, the ETc was multiplied by 0.4, 0.7 and 1.3 (40, 70 and 130% of ETc). Primarily, height, stem diameter, leaf area and leaf area index were measured at 27, 48, 69 and 90 Days After Emergence (DAE), and then the absolute and relative growth rates in height, stem diameter and leaf area were estimated. It was concluded that height, stem diameter, leaf area and leaf area index of sesame BRS 196 CNPA G4 increased with irrigation; the highest growth occurred until 70 or 75 DAE, and the greatest growth was obtained, in general, in 698 mm of irrigation depth.

 

Key words: Sesamum indicum L., evapotranspiration, growth rates, water stress.