Ionic Response and Sorghum Production under Water and Saline Stress in a Semi-Arid Environment

Ionic Response and Sorghum Production under Water and Saline Stress in a Semi-Arid Environment

The increase in water demand in regions with limited good-quality water resources makes it necessary to study the effect of low-quality water on plant metabolism. Therefore, the objective of this study was to evaluate the effect of water and salt stress on the levels of mineral elements and accumula...

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Published in:Agriculture (Basel) Vol. 13; no. 6; p. 1127
Main Authors: da Silva, Rodrigo Rafael, de Medeiros, José Francismar, de Queiroz, Gabriela Carvalho, de Sousa, Leonardo Vieira, de Souza, Maria Vanessa Pires, de Almeida Bastos do Nascimento, Milena, da Silva Morais, Francimar Maik, da Nóbrega, Renan Ferreira, Silva, Lucas Melo e, Ferreira, Fagner Nogueira, Clemente, Maria Isabela Batista, Cordeiro, Carla Jamile Xavier, de Castro Granjeiro, Jéssica Christie, Constante, Dárcio Cesar, da Silva Sá, Francisco Vanies
Format: Journal Article
Language:English
Published: Basel MDPI AG 01-06-2023
Subjects:
Abiotic stress
Agricultural production
Arid environments
Chlorine
Cultivars
Evapotranspiration
Ions
Irrigation
Irrigation water
Leaves
nutrient accumulation
Plant metabolism
Plants
Potassium
Saline water
Salinity
Seasons
Semi arid environments
Semiarid environments
Sodium
Sorghum
Sorghum bicolor (L.) Moench
Sucrose
Toxicity
water deficit
Water demand
Water quality
Water resources
Water stress
Brazil
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Summary:The increase in water demand in regions with limited good-quality water resources makes it necessary to study the effect of low-quality water on plant metabolism. Therefore, the objective of this study was to evaluate the effect of water and salt stress on the levels of mineral elements and accumulation of toxic elements Na+ and Cl− in the leaves and their consequences on the production variables of the sorghum cultivar IPA SF-15. The design adopted was randomized blocks in a factorial scheme (4 × 4), with four salt concentrations (1.5; 3.0; 4.5, and 6.0 dS m−1) and four irrigation depths (51.3; 70.6; 90.0, and 118.4% of crop evapotranspiration ETc) in three repetitions. To obtain nutrient, sodium, and chlorine contents in the leaf, we collected the diagnosis leaf from six plants per plot. For production data, we performed two harvests at 76 and 95 days after planting (silage point and for sucrose extraction). We evaluated the dry mass, fresh mass yield, and total dry mass for the two cutting periods and applied the F-test at the 5% significance level. There was an effect of water stress but not saline, making it possible to use saline water for sorghum irrigation. As for the toxicity of ions, the plant showed tolerance behavior to Na+ and Cl− ions. The grain filling phase was more sensitive than the final phase of the crop cycle.
ISSN:2077-0472
2077-0472
DOI:10.3390/agriculture13061127