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

Growth aspects and production of cotton under salt stress as a function of organic fertilizer

Lunara de Sousa Alves
  • Lunara de Sousa Alves
  • Programa de Pós-Graduação em Sistemas Agroindustriais, Universidade Federal de Campina Grande, Pombal-PB, Brasil.
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Mario Leno Martins Veras
  • Mario Leno Martins Veras
  • Programa de Pós-Graduação em Agronomia, Universidade Federal da Paraíba, Areia-PB, Brasil.
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Jose Sebastiao de Melo Filho
  • Jose Sebastiao de Melo Filho
  • Programa de Pós-Graduação em Agronomia, Universidade Federal da Paraíba, Areia-PB, Brasil.
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Nelto Almeida Sousa
  • Nelto Almeida Sousa
  • Programa de Pós-Graduação em Agronomia, Universidade Federal da Paraíba, Areia-PB, Brasil.
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Rosinaldo de Sousa Ferreira
  • Rosinaldo de Sousa Ferreira
  • Programa de Pós-Graduação em Agronomia, Universidade Federal da Paraíba, Areia-PB, Brasil.
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Lucimara Ferreira de Figueiredo
  • Lucimara Ferreira de Figueiredo
  • Programa de Pós-Graduação em Agronomia, Universidade Federal da Paraíba, Areia-PB, Brasil.
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Emanoel da Costa Alves
  • Emanoel da Costa Alves
  • Programa de Pós-Graduação em Agronomia, Universidade Federal da Paraíba, Areia-PB, Brasil.
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Karialane da Silva Belarmino
  • Karialane da Silva Belarmino
  • Programa de Pós-Graduação em Agronomia, Universidade Federal da Paraíba, Areia-PB, Brasil.
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Mayara Andrade de Souza
  • Mayara Andrade de Souza
  • Programa de Pós-Graduação em Agronomia, Universidade Federal da Paraíba, Areia-PB, Brasil.
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Evandro Franklin de Mesquita
  • Evandro Franklin de Mesquita
  • Centro de Ciências Humanas e Agrárias, Universidade Estadual da Paraiba, Catolé do Rocha-PB, Brasil.
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  •  Received: 18 August 2016
  •  Accepted: 28 September 2016
  •  Published: 03 November 2016

Abstract

The cotton plant is a species cultivated in many parts of the world, with enormous economic importance. The objective of this study was to evaluate the effect of salinity levels in earthworm humus quantities function on the growth and production of cotton. The experiment was conducted in a greenhouse at the Campus IV in the State University of Paraiba, municipality of Catolé do Rocha-PB, Brazil.  A completely randomized design with four replications, in a factorial 4 x 4 was used. The first factor consisted of salinity levels in irrigation water (0.8, 3, 4.5 and 6 dS m-1) and the second factor of earthworm humus amounted to: 0, 1, 2 and 3 kg/plant. At the end of the experiment, the growth characteristics: plant height, stem diameter, leaf number, unit leaf area and leaf area of the plant were evaluated. The production: number of flower buds, number of bolls per plant, seed weight per boll, number of seeds per boll, 100 seed weight, total production, fiber production and seed production were also estimated. The interaction between salinity levels and quantities of earthworm humus did not affect the growth and production of cotton. The increase in salinity levels adversely affected the cotton crop. Largest earthworm humus quantities gave an increase in cotton production.

 

Key words: Gossipium hirsutum r. latifolium H., Electrical conductivity of water, humus earthworm.