CHEMICAL SOIL INDICATORS UNDER DIFFERENT USES AND MANAGEMENT IN LOT 31 OF THE VENICE SETTLEMENT PROJECT IN SOUTHEASTERN PARÁ

Abstract

ABSTRACT: The objective of this work was to evaluate the soil chemical components and their main indicators in order to identify the productive potential and the capacity to meet the needs of their systems in lot 31 of the Venice Settlement Project in the Southeast of Pará. Carried out in the project of Settlement Venice in lot 31, Municipality of São Domingos do Araguaia-PA. Soil samples were collected from soils of pasture areas 1 and 2, and capoeira area, which were located near pasture 3. To characterize soil chemical indicators, 15 simple samples were collected in each area; Collected and mixed, forming a composite sample. After homogenization, they were sent to the laboratory to perform the chemical analyzes of interest. The analyzes included pH, water and Al, Ca, Mg, H + Al, as well as the relevant calculations to obtain the indexes, SB and V%. PH of pasture 1 and capoeira area presented values of 5.7 and 5.3 respectively, so they do not present differences between their samples, both are considered agronomically of medium acidity since they have pH between 5.1 - 6.0. Pasture 2 pH had high acidity in comparison to the other areas evaluated with 4.9. The area of pasture 2 presented the lowest values of the chemical quality, besides having high acidity, it obtained the lowest content of organic matter. KEYWORDS: Management, Pasture, Soil acidity.