IRRIGATION DEFICIT STRATEGIES ON PHYSIOLOGICAL AND PRODUCTIVE PARAMETERS OF 'TOMMY ATKINS' MANGO

Authors

  • Marcelo Rocha dos Santos Agriculture Sector, Instituto Federal Baiano Campus Guanambi, Guanambi, BA
  • Sérgio Luiz Rodrigues Donato Agriculture Sector, Instituto Federal Baiano Campus Guanambi, Guanambi, BA
  • Eugênio Ferreira Coelho Embrapa Mandioca e Fruticultura, Cruz das Almas, BA
  • Paulo Roberto Fernandes Cotrim Junior Agriculture Sector, Instituto Federal Baiano Campus Guanambi, Guanambi, BA
  • Igor Nogueira de Castro Agriculture Sector, Instituto Federal Baiano Campus Guanambi, Guanambi, BA

DOI:

https://doi.org/10.1590/1983-21252016v29n120rc

Keywords:

Water deficit. Irrigation management. Mangifera indica. Gas exchange.

Abstract

The objective of this work was to evaluate the gas exchange, leaf temperature, yield and water use efficiency in 'Tommy Atkins' mango under irrigation deficit strategies. The experimental design was randomized block, with seven treatments with regulated deficit irrigation (RDI) under micro-spray and five treatments with partial root-zone drying (PRD) under drip irrigation. The treatments on RDI consisted of application of 100, 75 and 50% of ETc at the stages S1 (beginning of flowering to fruit set) S2 (fruit development) and S3 (fruit physiological maturation). The treatments on PRD consisted of application of 100, 80, 60 and 40% of ETc, in the same three stages, alternating the irrigation side every 15 days. The regulated deficit irrigation causes less negative interference in gas exchange than the partial root-zone drying, and the climate factors affect the gas exchange and leaf temperature of 'Tommy Atkins' mango more than the regulated deficit irrigation. The partial root-zone drying irrigation with 60 and 40% of ETc causes a decrease in the 'Tommy Atkins' mango yield. The regulated deficit irrigation up to 50% of ETc, applied at the fruit maturation stage, maintain the yield and water use efficiency.

Author Biographies

  • Marcelo Rocha dos Santos, Agriculture Sector, Instituto Federal Baiano Campus Guanambi, Guanambi, BA
    Engenheiro Agrônomo graduado pela UFBA, mestre e doutor em Engenharia Agrícola pela UFV. Atua na linha de manejo da irrigação e estratégia de manejo de irrigação para aumento da eficiência de uso da água em fruteiras.
  • Sérgio Luiz Rodrigues Donato, Agriculture Sector, Instituto Federal Baiano Campus Guanambi, Guanambi, BA
    Doutor em Fitotecnia pela Universidade Federal de Viçosa.
  • Eugênio Ferreira Coelho, Embrapa Mandioca e Fruticultura, Cruz das Almas, BA
    pHD em Engenharia de Irrigação Utah University.
  • Paulo Roberto Fernandes Cotrim Junior, Agriculture Sector, Instituto Federal Baiano Campus Guanambi, Guanambi, BA
    Estudante de Agronomia e bolsista de Iniciação Científica da Fapesb
  • Igor Nogueira de Castro, Agriculture Sector, Instituto Federal Baiano Campus Guanambi, Guanambi, BA
    Estudante de Agronomia IF Baiano Campus Guanambi e bolsista de Iniciação Científica de CNPq

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Published

12-03-2016

Issue

Section

Agricultural Engineering