Manejo agroflorestal e qualidade de um latossolo vermelho amarelo no cerrado piauiense

Abstract

The current farm system has induced the soil to accelerate degradation. In view of the changes that the environment suffers due to the development of the agricultural production the present research has the objective of evaluating the viability of the agroforestry management in the maintenance and conservation of soil quality in the Cerrado of Piauí and in the area of monoculture of soybean. The installation process of an agroforestry system (SAF) was carried out in a native area of the Cerrado of Piauí under the dominion of sensu stricto photofissionomia. Therefore, the study sought to evaluate soil quality attributes under agroforestry and monoculture systems of soybean, how to qualitatively and quantitatively assess the soil edaphic fauna in a red yellow Latosol under an agroforestry system recently installed in the Cerrado of Piauí. To characterize soil quality attributes, soil samples were collected to evaluate attributes. The collection of edaphic fauna occurred through pitfall traps. The beneficial effects of SAFs depend on the quality and periodicity of the management, and can decrease the yield of the agricultural crops, depending on the time of implantation. The implantation of SAF's can be related to difficulties encountered during the installation period, due to the water availability and impossibility of irrigated management. The soil fertility attributes presented variability of the area under the agroforestry system in relation to soybean monoculture, in which the intensive use of the soil in the monoculture can contribute to the reduction of soil quality under and agroforestry systems contributes to the conservation and maintenance of these soils. In the study of the edaphic fauna, it was observed that the monoculture of soybean is directly influenced by the practices adopted in the crops, provoking alteration of the soil edaphic fauna. The edaphic fauna serves as bioindicators of soil conservation in SAF's.