Abstract

Valdinei Araújo Gonçalves, Igor Rodrigues de Assis, Lino Roberto Ferreira, Matheus Ferreira França Teixeira, Gustavo Antônio Mendes Pereira,Matheus de Freitas Souza and Douglas Teixeira Saraiva

The physical quality of the soil is of great importance for a sustainable agricultural system. Thus, this study aimed to evaluate the physical attributes of an Ultisol, after ten years under two different tillage systems - tillage and no-tillage, and two crops successions - corn-beans and soybean-wheat. It will determined the bulk density, macroporosity, microporosity, total porosity and the content of organic matter in depths 0-5; 10-15 and 20-25 cm and soil mechanical resistance to penetration to a depth of 60 cm. In the depth of 0-5 cm greater volume of micropores in soil with corn-beans succession at the no-tillage. The succession soybean-wheat under tillage resulted in the highest levels of organic matter. Higher density values were observed in the no-tillage system with corn-beans succession. Values critical for soil resistance to penetration were observed between 5 and 25 cm deep at the no-tillage/succession soybean-wheat. The bulk density is the physical attribute of Ultisol less influenced by the assessed management systems. The total porosity of Ultisol did not differ between no-tillage and tillage system, after ten years of crop succession. After ten years, no-tillage system and corn-beans succession were the least negatively affected of the evaluated physical attributes of Ultisol.