Physical quality of soil under different systems of tillage and application of pig slurry

Revista Brasileira de Engenharia Agrícola e Ambiental

Lima, Renato P. de²  Verburg, Ernst E. Jan¹  Oliveira, Dener M. S.² 

[1] UFV, Viçosa;USP, Piracicaba, BRAZIL

关键词: soil compaction;    agricultural wastes;    penetration resistanceIntroduçãoOs sucessivos problemas acerca da conservação do solo levaram os pesquisadores a desenvolver várias técnicas de manejo a fim de se evitar a degradação física do solo por processos de compactação e perdas de solo;   

DOI  :  10.1590/1807-1929/agriambi.v19n3p280-285

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

The application in agriculture has been the main alternative to allocate the large volume of pig slurry (PS) generated in production environments. The aim of this study was to assess possible changes in physical properties of soil resulting from the management system and PS application. Five areas were sampled: native forest, pasture with mineral fertilizer and PS application, conventional tillage with mineral fertilizer and PS application, no-tillage with mineral fertilizer, no-tillage with mineral fertilizer and PS application. The evaluated physical properties of soil were: bulk density (Bd), total porosity (Pt), macroporosity (Ma), macro and microporosity ratio (Ma/Mi) and penetration resistance (PR). The adoption of different agricultural management systems altered the physical conditions of the soil, increasing the Bd and the PR and reducing the pore volume. The soil managed under pasture showed the highest values of PR. No changes were found in physical properties of soil by the application of PS in evaluated tillage systems.

【 授权许可】

Unknown