Proposition of models for erodibility estimation of Brazilian Oxisols

The existent methods for indirect determination of erodibility have not bee n adequate when applied to tropical soils, mainly in relation to Brazilian (Oxisols). So, this study aimed to develop models for determination of erod ibility of this soils group, from morphological, physical, chemical and min eralogical variables of the soil. In this way, using 19 latosols from the v arious Brazilian geographical regions, 129 determinations (independent vari ables) were made, whose results were submitted to multiple linear regressio n analyses in backward using the SAS program, correlating them with the ero dibility directly obtained in the field through soil losses plots (dependen t variable). It was possible to develop five models, with increasing degree s of complexity and precision, for the estimation of the erodibility of Bra zilian latosols, involving 37 determinations that presented significance.