Chemical attributes in saline-sodium soil and effect of sulfuric acid on Prosopis juliflora growth

• Autor(a) principal: Albuquerque, Alciênia Silva
• Data de Publicação: 2018
• Outros Autores: Fonsêca, Nathan Castro, dos Santos, Rivaldo Vital, Medeiros, Walleska Pereira
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista de Ciências Agrárias (Belém. Online)
• Texto Completo: https://ajaes.ufra.edu.br/index.php/ajaes/article/view/2811
• topic: Semiarid; Soils; Recovery; Semiárido; Solos; Recuperação

Inadequate management of irrigated soils results in degradation by salinization and sodicity; therefore, the knowledge of their chemical properties, for the adoption of efficient correction techniques is necessary. Thus, this research aims to identify the variation of the chemical properties of saline soils and verify the effect of sulfuric acid on these attributes and initial growth of algaroba [Prosopis juliflora (SW) DC]. The samples of soil used were collected at the São Gonçalo Irrigated Perimeter and sent to the laboratory for chemical characterization. The correlation between PST and CE, pH, Ca2+ and Mg2+ was studied. In the next step, an experiment was carried out on the Prosopis juliflora species, applying four increasing doses of H2SO4 (0, 2, 4, 6 ml/kg soil), with three replicates. Soils were sampled (100 g vaso-1) for pH determination and extraction of P contents using two extractors: Mehlich-1 and Olsen. The chemical attributes in the irrigated area presented high spatial variability, and the application of H2SO4 doses in the soil provided a reduction of pH and uneven growth of Prosopis juliflora.