PHYSICAL ATTRIBUTES OF THE SOIL IN DIFFERENT USES IN THE CERRADO BIOME

• DOI: 10.22533/at.ed.9732111113

• Palavras-chave: Areas of use, superficial horizons, anthropization.

• Keywords: Areas of use, superficial horizons, anthropization.

• Abstract:

  The characterization of the physicochemical fertility of the soil profile is important for a more informed interpretation of the need for interventions to promote better plant development. The objective of this work was to determine the physicochemical quality of surface horizons in a degraded pasture system, planted forest, conventional cultivation and regenerating cerrado. Sample collections were carried out in the experimental units of the Agrarian Sciences Complex (CCA) of the State University of Tocantins - Unitins, Palmas - TO, in the lower third of the Tocantins River basin - Lago de Palmas region. Deformed samples were collected for chemical and textural characterization of each area of ​​use, as well as undisturbed samples to determine the physical parameters. The sample results were subjected to principal component analysis in order to summarize the information contained in the original data matrix. The best physical conditions, in general, were found in the area with cerrado in regeneration, due to the more sandy texture of the soil, and the best chemical quality, in the planted forest area. As for the areas of use system of degraded pasture and conventional agricultural cultivation, there was low physical quality with great compaction in the former, in addition to both presenting unfavorable chemical characteristics. Thus, land use strongly influenced the physicochemical attributes of the soil.

• Número de páginas: 11