Despite the significance uncertainty in the variables of erosion prediction models, spatial and temporal variability is seldom considered in soil conservation analyses and planning. The consequences of this simplification are misleading soil loss predictions, with consequences for the agricultural and environmental sustainability of agricultural fields. The objective of this paper was (a) to estimate the effect of spatial and temporal variability of the USLE factors on erosion prediction of a homogeneous agricultural field, in the Distrito Federal (Brazil), (b) to […]

With the expansion of the sugar/alcohol sector, the native vegetation was removed from soils with few limitations as well as with great risks for intensive cultivation and the areas incorporated in the production process. Therefore, the adoption of management systems that maintain the soil structure may be a key for the maintenance of the quality and sustainability of sugarcane production systems. The objective of this study was therefore to evaluate the use potential for sugarcane and structural quality of a […]

The use of the Universal Soil Loss Equation to predict erosion losses and for conservation planning requires an evaluation of index values of local rainfall erosivity. As a contribution to knowledge on these indexes in the coastal zone of Ceará State, the objectives of this study were: (a) to determine the R factor and the annual EI30 index values, its monthly distribution, probability of occurrence and return periods in Fortaleza, Ceará State, Brazil for the period of 1962 to 1981, […]