Structure and water storage in an Alfisol under cultivated pasture, native forest and eucalyptus in the state of Rio Grande do Sul
01/Feb/2014
Unsuitable management practices have led to soil compaction and degradation of soil structure. Identifying properties that better represent these alterations are important for recovery of soil structure and for recommendation of practices to avoid damage to soil structure. The aim of this study was evaluate the effect of different soil uses on the structure and water properties of an Alfisol. The study was carried out in an Alfisol in the municipality of Butia in the “Serra do Sudeste” physiographic region […]
Compressibility of Oxisol aggregates under no-till in response to soil water potential
01/Dec/2009
The system of no-till sowing stands out as being a technology that suits the objectives of more rational use of the soil and greater protection against the erosion. However, through till, any of it, occurs modifications of the soil’s structure. This current work aims to study the influence of the energy state of the water and of the organic matter on the mechanism of compaction of Red Oxisol under no-till management system. Humid and non-deformed sample were collected in horizon […]
Aggregate compressibility of an Amazon Oxisol in response to water potential
01/Jul/2005
The agricultural use of soils usually relies on the use of heavy machinery that cause soil compaction, affecting the amount of air and water available for plants. The present study was carried out in the year 2000 and aimed at studying the performance of aggregates of an Amazon Oxisol under mechanical compression and that were subjected to varying degrees of matric potential. Humid and undisturbed tropical forest soil samples were collected from the A horizon (10 cm deep) and B horizon […]