Water-retaining polymer in okra cultivation under water replacement levels

Authors

  • Ericlys Daniel Nascimento Trigueiro Academic Unit of Agricultural Sciences, Center of Science and Agrifood Technology, Universidade Federal de Campina Grande, Pombal, PB, Brazil https://orcid.org/0009-0006-3177-924X
  • Geovani Soares de Lima Academic Unit of Agricultural Sciences, Center of Science and Agrifood Technology, Universidade Federal de Campina Grande, Pombal, PB, Brazil https://orcid.org/0000-0001-9960-1858
  • Saulo Soares da Silva Post Graduate Program in Agroindustrial Systems, Universidade Federal de Campina Grande, Pombal, PB, Brazil https://orcid.org/0000-0002-1049-6519
  • Lauriane Almeida dos Anjos Soares Academic Unit of Agricultural Sciences, Center of Science and Agrifood Technology, Universidade Federal de Campina Grande, Pombal, PB, Brazil https://orcid.org/0000-0002-7689-9628
  • Reynaldo Teodoro de Fátima Post Graduate Program in Tropical Horticulture, Universidade Federal de Campina Grande, Pombal, PB, Brazil https://orcid.org/0000-0003-0463-4417
  • Flávia de Sousa Almeida Post Graduate Program in Agroindustrial Systems, Universidade Federal de Campina Grande, Pombal, PB, Brazil https://orcid.org/0009-0001-8523-9883
  • Vitor Manoel Bezerra da Silva Post Graduate Program in Agricultural Engineering, Universidade Federal de Campina Grande, Campina Grande, PB, Brazil https://orcid.org/0009-0004-7176-3758
  • Hans Raj Gheyi Post Graduate Program in Agricultural Engineering, Universidade Federal de Campina Grande, Campina Grande, PB, Brazil https://orcid.org/0000-0002-1066-0315

DOI:

https://doi.org/10.1590/1983-21252026v3914143rc

Keywords:

Abelmoschus esculentus (L.) Moench. Water deficit. Semiarid region.

Abstract

The cultivation of okra [Abelmoschus esculentus (L.) Moench] has potential for expansion in Northeastern Brazil. However, irregular precipitation, associated with high evapotranspiration rates, is a limiting factor for agricultural development. In this context, the use of water-retaining polymers stands out as a promising alternative due to their capacity to retain water and ensure favorable conditions for plant growth. Thus, the present study aimed to evaluate the effects of a water-retaining polymer on the growth, production, and fruit quality of okra under different water replacement levels. The experiment was conducted in a greenhouse at CCTA/UFCG, Pombal Campus, PB, Brazil. The experimental design was a randomized block in a 5 × 4 factorial scheme, corresponding to five water replacement levels (40, 60, 80, 100, and 120% of the actual evapotranspiration - ETr) and four doses of a water-retaining polymer (0, 1.0, 2.0, and 3.0 g L⁻¹), with three replications. A water replacement level of 80% ETr resulted in the greatest growth and production of okra cv. Carcará. Both deficit and excess water replacement caused growth inhibition and a decrease in the number of fruits. The application of the water-retaining polymer at a dose of 3.0 g L⁻¹ had a beneficial effect on the growth, fresh mass, and mean diameter of the fruits, being indicated for okra cultivation in semiarid areas. Irrigation with 40% ETr combined with a 1.3 g L⁻¹ of the water-retaining polymer increased the ascorbic acid content in the fruits of okra cv. Carcará.

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Published

04-11-2025

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Scientific Article