Inadequate land use and large buildings in rural areas are causing damages to the soil-climate environment, reducing productivity and thus expanding degraded areas. In view of this problem, this study evaluated the recovery of an Oxisol that had been treated with green manure, soil amendment, gypsum and pasture in the last 17 years. The quality of the structure was used as an indicator of soil recovery. The study was conducted in a completely randomized design with nine treatments and four […]

The application of treated and stabilized sewage sludge to soils has been shown to be a viable disposal alternative, since costs are low and cause no negative impacts, but contribute to the restoration of the original characteristics of some degraded soils. This experiment was carried out in Mogi Guaçu, State of São Paulo (Brazil) to evaluate the effect of doses (0, 20, 40, and 80 Mg ha-1) of an organic compost of sewage sludge and grass residues on the recovery […]

The disposal of sewage sludge and other organic waste on the soil seems be an alternative for the public sector since this can provide nutrients for the growth and maintenance of plant species that constitute the urban systems of green areas. This experiment was conducted in Mogi Guaçu, State of São Paulo to evaluate the effect of doses (0, 20, 40 and 80 Mg ha-1) of an organic sewage sludge compost and grass residue on the recovery of a humusless […]

Mining is a human activity with a harsh impact on ecosystems. The degradation degree depends on the intensity of soil impact, exploited soil volume and amount of mine spoil. Soil microbial activities are responsible for key functions in ecosystems and can indicate the degree of rehabilitation of mined areas. The purpose of this study was to evaluate the impact of bauxite mining in two chronosequences with different rehabilitation strategies (revegetation) on the following soil attributes: organic carbon (C org), total nitrogen […]

The effects of lime rates on the growth of Eucalyptus camaldulensis in soil mixtures with increasing proportions of Zn and Cd contamination were evaluated. The experiment was carried out under greenhouse conditions and the metal contamination levels were obtained by mixing 0, 25, 50, and 100% of a contaminated soil with a non-contaminated one used as diluter. Lime rates were 0, 10, 20, 40, and 80 t ha-1 and the experiment was conducted in pots containing 1.5 kg of soil with treatments arranged […]

A field experiment, located on a private farm close to Piracicaba, State of São Paulo, Brazil, was conducted on a severely eroded soil (Ultisol-Entisol association), which has been planted with sugar cane for the last 30 years. The objective was to characterize the spatial variability of soil and plant attributes. An area of 50 by 70 m was divided into 10 columns and 14 rows in a grid of 5 m, resulting in 140 sampling points. Soil samples were collected […]