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

Growth and physiology of peanut (Arachis hypogaea L.) irrigated with saline water and biofertilizer application times

Daivyd Silva de Oliveira
  • Daivyd Silva de Oliveira
  • Universidade Federal da Paraiba (UFPB), Centro de Ciências Agüias (CCA), Brazil.
  • Google Scholar
Thiago Jardelino Dias
  • Thiago Jardelino Dias
  • Universidade Federal da Paraiba (UFPB), Centro Ciencias Humanas, Sociais e Agrarias (CCHSA), Brazil.
  • Google Scholar
Edvania Pereira de Oliveira
  • Edvania Pereira de Oliveira
  • Universidade Federal da Paraiba (UFPB), Centro Ciencias Humanas, Sociais e Agrarias (CCHSA), Brazil.
  • Google Scholar
Hemmannuella Costa Santos
  • Hemmannuella Costa Santos
  • Universidade Federal da Paraiba (UFPB), Centro Ciencias Humanas, Sociais e Agrarias (CCHSA), Brazil.
  • Google Scholar
Welliton Barros de Magalhaes
  • Welliton Barros de Magalhaes
  • Universidade Federal da Paraiba (UFPB), Centro Ciencias Humanas, Sociais e Agrarias (CCHSA), Brazil.
  • Google Scholar
Bruno Ferreira Matos
  • Bruno Ferreira Matos
  • Universidade Federal da Paraiba (UFPB), Centro Ciencias Humanas, Sociais e Agrarias (CCHSA), Brazil.
  • Google Scholar
Leandra de Melo Cavalcante Sousa
  • Leandra de Melo Cavalcante Sousa
  • Universidade Federal da Paraiba (UFPB), Centro de Ciências Agüias (CCA), Brazil.
  • Google Scholar
Jose Sebastiao de Melo Filho
  • Jose Sebastiao de Melo Filho
  • Universidade Federal da Paraiba (UFPB), Centro de Ciências Agüias (CCA), Brazil.
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  •  Received: 29 September 2016
  •  Accepted: 09 October 2016
  •  Published: 03 November 2016

Abstract

The peanut crop has adaptive features to high salinity levels in the soil, due to its morphological and physiological characteristics. The objective of this study was to evaluate the use of biofertilizer in reducing the effects of irrigation water salinity on the vegetative and physiological behavior of the peanut crop, as well as the crop development under saline conditions. The experiment was conducted in a greenhouse, in an experimental design with randomized blocks, adopting a 6 × 3 factorial scheme, concerning the irrigation water salinity (CEa) in six levels (0.5, 1.5, 2.5, 3.5, 4.5 and 5.5 dS m-1) and three doses of biofertilizer (applied at 15, 30 and 45 days after germination), with four replications, totaling 72 experimental units. The variables analyzed were: plant height; fresh and dry weight of shoots; stem diameter; length, fresh weight and dry weight of roots; number of branches; leaf area; photosynthetic radiation, chlorophyll a, b, and total chlorophyll. The use of biofertilizer had no influence on reducing the effects of irrigation water salinity in the development of the peanut crop. Salinity negatively affected all physiological and growth variables.
 
Key words: Electric conductivity, salinity, organic input, Arachis hypogaea.