Avaliação de resistência do solo à penetração ao longo do tempo em um sistema agroflorestal

Abstract

Penetration resistance indicates possible restrictions to healthy plant growth and is directly linked to soil management. Agroforestry systems have sustainable and conservationist characteristics, combining agricultural production and conservation of natural resources. This study aimed to evaluate and compare how soil PR changes over time in an Agroforestry System located in the city of Sinop, Mato Grosso. Three data collections were carried out at three different times and at four depths (0-10.10-20.20-30.30-40 inches). For the determination of resistance to penetration, an impact penetrometer model IAA / Planalsucar - Stolf was used. There was a reduced difference at a 5% probability level by the Wilcoxon-Mann-Whitney test when compared to the ground before and after insertion of the agroforestry systems , as well as when compared to different depths, except at 40 cm between the second and third collections. The implementation of SAF influenced the reduction of penetration resistance over time for the soil under analysis.