EVALUATION OF SOIL ATTRIBUTES SUBMITTED TO DIFFERENT USES AND SOIL MANAGEMENT IN THE SEMI-ARID PARAIBANO

Abstract

Studying the dynamics of soil properties is an important process in areas where the soil is subjected to different practices, as it may indicate management alternatives, besides allowing estimates of responses of soil attributes as a function of certain practices performed. The work was carried out in two stages, to conduct the research, the selection of four environments was made, being a Permanent Preservation Area (APP), agroforestry (A), a sheep grazing area (APO) and the Orchard of Goiabeira (PG). After the first stage (selection and characterization), the second stage was conducted, which consisted of dividing the study areas into five equal parts, equivalent to repetitions, within each one three simple samples were collected to form a composite sample collected at depths 0 – 20 cm, and the following chemical attributes were analyzed: pH, phosphorus, potassium, sodium, calcium, magnesium and organic matter, determined in the soil, water and plant laboratory of the Federal Institute of Paraíba - Campus Sousa. The experimental design followed was completely randomized (IHD), for soil collection on chemical attributes, being considered as treatments the four soil use systems such as T1=permanent preservation area (APP), T2= agroforestry (A), T3= sheep grazing area (APO) and T4= guava orchard (PG) with five replications. The best chemical characteristics of the soil were expressed by the systems according to the following order: Pemanente Preservation Area (APP), followed by Agroforestry (A), Guava Orchard (PG) and sheep grazing area (APO).