Alterações Nos Atributos Químicos De Um Argissolo Amarelo, Submetido a Três Diferentes Agroecossistemas

Abstract

Historically, Brazil is a country in which agricultural production presents one of its greatest economic characteristics, however, in the last decades, public policies have been constructed that aim at a greater insertion of family agriculture. This practice, if not done with good management, can become extremely harmful to the physical, biological and chemical properties of the soil. Thus, the use of environmental parameters for soil establishes the level of environmental degradation in which they are, directing preventive, corrective and control actions. The objective of this study was to analyze the changes in the chemical attributes of a yellow argisol, located in the vicinity of Eldorado dos Carajás-Pará, under different agroecosystems: pastures with 1 and 2 years of reforestation and primary forest. Data collection was performed from the second half of 2017, during the months of November and December. In view of the result found, according to the methodology used, in many cases the chemical attributes evaluated were satisfactory over time when compared to the native forest, such as salinization and potential acidity (harmful to the soil), where the lowest value obtained went to the pasture with 2 years of reform. In addition, the value found individually in each of the parameters allowed to evaluate the chemical property to which more attention should be directed, functioning as an instrument of evaluation and control of the environmental degradation in which the soils are found.