01436naa a2200229 a 450000100080000000500110000800800410001910000110006024501120007126000090018350000200019252008360021265300110104865300140105965300150107365300120108865300120110065300150111265300090112765300090113677300610114510759832011-04-27       1997    bl uuuu     u00u1 u    #d1 aEpagri  aThe impact of erosion on the productivity of a Ferralsol and a Cambisol in Santa Catarina, southern Brazil.  c1997  aISSN, 0266-7491  aThe impact of soil erosion on soil productivity was estimated for a Rhodic Ferralsol and a Eutric Cambisol in Santa Catarina, southern Brazil. Over equivalent periods, total soil loss were an order of magnitude different (868 and 68 t/ha respectively on the bare soil control), yet the impact on maize yield per tonne of soil lost was far greater at the Cambisol site with less erosion. Similar interesting contrasts between sites were found for the other measures of impact with decline in pH and phosphorus and increase in the aluminum being the most obvious induced soil differences. The results demonstrate the variable nature of erosion impact according to soil type and they highlight the importance of examining a number of measures of impact before pronouncing on the sustainability of any particular agricultural practice.  aBrazil  aCambisols  aCrop yield  aEros??o  aErosion  aFerralsols  aSoil  aSolo  tSoil Use and Management, Londresgv. 13, p. 90-96, 1997.