African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6638

Full Length Research Paper

Gas exchange and yield of Prata-type banana plants with fertilizer sources for organic management

Pedro Ricardo Rocha Marques
  • Pedro Ricardo Rocha Marques
  • Instituto Federal de Educação Ciência e Tecnologia Baiano, Campus Guanambi, Caixa Postal 009, Distrito de Ceraima, CEP 46430‑000 Guanambi, Bahia, Brazil.
  • Google Scholar
Sergio Luiz Rodrigues Donato
  • Sergio Luiz Rodrigues Donato
  • Instituto Federal de Educação Ciência e Tecnologia Baiano, Campus Guanambi, Caixa Postal 009, Distrito de Ceraima, CEP 46430‑000 Guanambi, Bahia, Brazil.
  • Google Scholar
Abel Rebouças São José
  • Abel Rebouças São José
  • niversidade Estadual do Sudoeste da Bahia, Campus Vitória da Conquista, DFZ, Estrada do Bem Querer, km 4, Caixa Postal 95, CEP 45083-900, Vitória da Conquista, Bahia, Brazil.
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Raul Castro Carriello Rosa
  • Raul Castro Carriello Rosa
  • Embrapa Agrobiologia, Rodovia BR 465, km 7, Ecologia, CEP 23891-000. Seropédica, RJ. Brazil.
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  •  Received: 20 November 2017
  •  Accepted: 04 January 2018
  •  Published: 01 February 2018

Abstract

The aim of this paper is to evaluate gas exchanges and yield of Prata-type banana plants subjected to fertilizer sources for organic management in soil with improved fertility. Two cultivars (‘Dwarf-Prata’ and ‘BRS Platina’), 5 K2O rates (0, 200, 400, 600, and 800 kg ha-1 year-1) supplied by cattle manure and Naturalplus® rock powder, and 2 evaluation times (8:00 am and 2:00 pm) were arranged in a randomized complete block design with 15 replicates. As for production, a randomized block design with 4 cycles and 3 replicates was used. In fertile soils, gas exchanges are little influenced by fertilization. Fertilization with increasing application rates determines a quadratic variation in stomatal conductance and internal CO2 concentration in ‘Dwarf-Prata’ and a linear variation for leaf temperature and instantaneous water-use efficiency in ‘BRS Platina’. Quantum efficiency of photosynthesis is higher at 8:00 am, whereas at 2:00 pm, for leaf temperature. Photosynthesis and leaf transpiration directly correlate with stomatal conductance, instantaneous water-use efficiency, and leaf temperature, while instantaneous water-use efficiency and photosynthesis inversely associate with transpiration and leaf temperature. Cattle manure and rock powder fertilizations do not increase yield in banana plants grown in soils with improved fertility.

Key words: Musa species, manure, rock powder, productivity, physiological variables.