CARACTERIZAÇÃO FÍSICA, QUÍMICA E MINERALÓGICA DE SOLOS EM ÁREAS AGRÍCOLAS COM POTENCIAL PARA IRRIGAÇÃO NAS REGIÕES DO AGRESTE E MATA PARAIBANA

Abstract

As human activities, that is, the management applied to the wrongly cultivated areas is provoking an exposure of the soil, causing the degradation of the areas, occurring as a cumulative process of the environmental conditions. Therefore, the objective of this work was to perform a physical, chemical and mineralogical characterization in samples collected in the arable layer of soils leased in the Agreste and Mata Paraibanas Regions. As areas of study were Boqueirão and Mamanguape. After the selection of the areas with sample collectors of the soils of the two areas, taken to the laboratory and facts Physical, chemical and mineralogical analyzes in soils and areas. According to the results, in Boqueirão it was verified that it is a soil with higher clay content, it is also related to its flat relief, as well as to help in the predominance of this clay in this soil and greater retention of water not soil. A different condition in Mamanguape, which was classified as free of soils, having its undulating relief, with little clay content, consequently, having a lower water retention capacity in all aspects / thirds analyzed. All analyzed parameters point to a situation already known in the literature in terms of analytical data on these two environments, the soils studied in BQ (Luvisols and Neosols) are developed and preserved, are still related to rock, reflecting on soil fertility higher, with no need for correctives and fertilization, however, it presents greater susceptibility to erosion due to its physical development; In contrast, Mamanguape revealed more weathered soils such as Latosol and Argisol, acids and low natural fertility, and there is a need for correctives and fertilization according to an implanted culture.