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- Title
SOIL SUSCEPTIBILITY TO SALINITY AND SODICITY IN SORGHUM AREAS UNDER ABIOTIC STRESS.
- Authors
Maia de Queiroz, Gabriela Carvalho; Francismar de Medeiros, José; Cesar Constante, Darcio; Pires de Souza, Maria Vanessa; Vieira de Sousa, Leonardo; de Castro Granjeiro, Jessica Christie; Rafael da Silva, Rodrigo
- Abstract
Sorghum is a C4 grass adapted to saline and water stress, common in semiarid regions. Therefore, deficit irrigation is an alternative for rural producers, since productivity is not considerably affected. However, the use of brackish water can lead to salinization and/or sodification of the soil. Based on this, the objective was to evaluate the effect of irrigation water salinity and deficient irrigation depth on the soil sodification and salinization process. Two different experiments were carried out, designed in randomized blocks, under four irrigation blades (IB1 = 53%, IB2 = 67%, IB3 = 85% and IB4 = 94% of Culture evapotranspiration (ETc)) and four salinities, expressed in electrical conductivity (ECw) - 1.5; 3.0; 4.5 and 6.0 dS m-1. The variables analyzed were conductivity of the saturation extract (ECse) and the Sodium Adsorption Ratio of the extract (SARse), estimated by soil-water suspension 1:2.5 in layers 0 - 20 and 20 - 40 cm of the soil, considering their average.
- Subjects
SOIL salinity; ABIOTIC stress; SORGHUM; BRACKISH waters; IRRIGATION water; SOIL salinization; DEFICIT irrigation
- Publication
Revista Brasileira de Agricultura Irrigada - RBAI, 2022, Vol 16, p73
- ISSN
1982-7679
- Publication type
Article
- DOI
10.7127/rbai.v1601289