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This issue's cover: Rehabilitation of a large erosion gully in Piracicaba (Brazil). Discharged tires were placed at the bottom of the gully, which are then covered with soil and reforested. The advantages of this method are an adequate destination of this waste material and a lower cost if compared with burning in special facilities or disposal in landfills. It also helps to avoid inappropriate destinations such as open air burning to recover the steel wire and open air storage which helps to develop mosquito larvae. Some mosquito species such as Aedes aegypti that develop extremely well in the clean water accumulated in the tires are vectors of tropical epidemic disease (Dengue Hemorrhagic Fever). Additionally, less soil is needed to fill up the gully and drainage is improved in relation to the conventional method where only soil material is used to level the area. See "Temporal Erosion-Induced Soil Degradation and Yield Loss" by G. Sparovek and E. Schnug on pages 1479-1486 of this issue.
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