PRODUÇÃO E CONSUMO HÍDRICO DA BERINJELA SOB ESTRESSE SALINO IRRIGADA POR GOTEJAMENTO CONTÍNUO E PULSOS

Lucas Farias Damasceno; Alide Mitsue Watanabe Cova; Hans Raj Ghey; Willian Fernandes de Almeida; José Andrey Amorim Leite Dias; Vitor de Souza Ribeiro

doi:10.1590/1983-21252022v35n220rc

Authors

Lucas Farias Damasceno Universidade Federal do Recôncavo da Bahia, Cruz das Almas, BA https://orcid.org/0000-0002-2755-0278
Alide Mitsue Watanabe Cova Universidade Federal do Recôncavo da Bahia, Cruz das Almas, BA http://orcid.org/0000-0003-0570-7008
Hans Raj Ghey Universidade Federal do Recôncavo da Bahia, Cruz das Almas, BA https://orcid.org/0000-0002-1066-0315
Willian Fernandes de Almeida Instituto Federal do Espírito Santo, Barra de São Francisco, ES https://orcid.org/0000-0001-7394-2865
José Andrey Amorim Leite Dias Universidade Federal do Recôncavo da Bahia, Cruz das Almas, BA https://orcid.org/0000-0002-9889-9127
Vitor de Souza Ribeiro Universidade Federal do Recôncavo da Bahia, Cruz das Almas, BA https://orcid.org/0000-0003-1948-6162

DOI:

https://doi.org/10.1590/1983-21252022v35n220rc

Abstract

Eggplant is a vegetable considered as moderately sensitive to salinity, and its production is affected by water deficit in the soil, mainly in the reproductive phase of the crop. The objective of this study was to evaluate the use of irrigation with brackish water using continuous drip and pulse in production, water consumption, water use efficiency, and soil salinization. The experimental design was in randomized blocks, in a 4 × 4 factorial scheme, with five replicates, totaling 80 plots. The treatments consisted of four forms of water application, continuous drip, and pulse throughout the cycle; continuous drip in the vegetative phase and pulse in the reproductive phase, and pulse in the vegetative phase and drip in the reproductive phase and four levels of irrigation water salinity - ECw (0.3; 1.5; 3.0; 4.5 dS m^-1). The inversion of irrigation treatments occurred 65 days after transplanting. Increase in water salinity from 0.3 to 4.5 dS m^-1, the total production (-11.96%), fruit length (-5.05%), and water use efficiency (-7.01%) reduced while there was no significant effect for the forms of water application and interaction between the studied factors. Pulse irrigation provided greater water savings and resulted in higher electrical conductivity in the soil saturation extract. The efficiency of water use did not show statistical difference when continuous drip or pulse irrigation was used throughout the cycle.

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