Physical attributes of an ultisol under systems planting and crop successions after ten years

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

《African Journal of Soil Science》 4卷5期 (2016/09) Pp. 339-346

摘要

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.

關鍵字

Tillage ； no-tillage ； corn-bean ； soybean-wheat ； management ； soil of degradation