Effect of Electrical Conductivity Levels and Hydrogen Peroxide Priming on Nutrient Solution Uptake by Chives in a Hydroponic System
Patrícia Ferreira da Silva,
Bárbara Davis Brito dos Santos,
José Dantas Neto,
Alberto Soares de Melo,
Rigoberto Moreira de Matos,
Semako Ibrahim Bonou,
Tonny José Araújo da Silva,
Edna Maria Bonfim-Silva,
Ana Paula Candido Gabriel Berilli,
Thiago Franco Duarte
Affiliations
Patrícia Ferreira da Silva
Departamento de Engenharia Agrícola, Instituto de Ciências Agrárias e Tecnológicas—ICAT, Universidade Federal de Rondonópolis, Av. dos Estudantes, 5055, Cidade Universitária, Bloco C, Rondonópolis 78736-900, MG, Brazil
Bárbara Davis Brito dos Santos
Unidade Acadêmica de Engenharia, Universidade Federal de Campina Grande, Rua Aprígio Veloso—Bodocongó, CM Block, Campina Grande 58109-970, PB, Brazil
José Dantas Neto
Unidade Acadêmica de Engenharia, Universidade Federal de Campina Grande, Rua Aprígio Veloso—Bodocongó, CM Block, Campina Grande 58109-970, PB, Brazil
Alberto Soares de Melo
Coordenação do Programa de Pós-Graduação em Ciências Agrárias, Centro de Ciências Biológicas e da Saúde, Universidade Estadual da Paraíba, Rua Baraúnas, 351—Universitário, Campina Grande 58429-500, PB, Brazil
Rigoberto Moreira de Matos
Unidade Acadêmica de Engenharia, Universidade Federal de Campina Grande, Rua Aprígio Veloso—Bodocongó, CM Block, Campina Grande 58109-970, PB, Brazil
Semako Ibrahim Bonou
Unidade Acadêmica de Engenharia, Universidade Federal de Campina Grande, Rua Aprígio Veloso—Bodocongó, CM Block, Campina Grande 58109-970, PB, Brazil
Tonny José Araújo da Silva
Departamento de Engenharia Agrícola, Instituto de Ciências Agrárias e Tecnológicas—ICAT, Universidade Federal de Rondonópolis, Av. dos Estudantes, 5055, Cidade Universitária, Bloco C, Rondonópolis 78736-900, MG, Brazil
Edna Maria Bonfim-Silva
Departamento de Engenharia Agrícola, Instituto de Ciências Agrárias e Tecnológicas—ICAT, Universidade Federal de Rondonópolis, Av. dos Estudantes, 5055, Cidade Universitária, Bloco C, Rondonópolis 78736-900, MG, Brazil
Ana Paula Candido Gabriel Berilli
Instituto Federal do Espírito Santo—Campus de Alegre Zona Rural, Alegre 29520-000, ES, Brazil
Thiago Franco Duarte
Departamento de Engenharia Agrícola, Instituto de Ciências Agrárias e Tecnológicas—ICAT, Universidade Federal de Rondonópolis, Av. dos Estudantes, 5055, Cidade Universitária, Bloco C, Rondonópolis 78736-900, MG, Brazil
The use of water of high electrical conductivity has become common in hydroponic systems, especially in regions with water scarcity. However, the use of inferior-quality water can affect crop yields. In this scenario, some studies have tested the use of chemical conditioning agents such as hydrogen peroxide to minimize the negative effects of stress on plants. From this perspective, this study aimed to evaluate the action of priming with hydrogen peroxide as a salt stress attenuator on the nutrient solution uptake and productivity of chives in a hydroponic system. The study was conducted in a protected environment with a randomized block design with a split-plot arrangement. The treatments consisted of a main plot consisting of the electrical conductivity of the nutrient solution (1.0, 2.0, 3.0, 4.0, and 5.0 dSm−1) and a subplot with five hydrogen peroxide concentrations (0.0, 0.15, 0.30, 0.45, and 0.60 mM). The increase in the electrical conductivity of the nutrient solution reduced bulb length, the solution volume applied, water uptake, total fresh mass, and the solution use efficiency by plants. Throughout the cultivation cycle in the hydroponic system, the consumption of nutrient solution was 459 mm lost by evapotranspiration. Acclimation with 0.60 mM hydrogen peroxide associated with 1 dSm−1 of electrical conductivity of the nutrient solution favors bulb diameter in chives. The increase in electrical conductivity compromises the productive yield of chives.
