The most abundant species was the endogeic Legonodrilus sp. nov., present in all plots at both samplings. Average densities were 49 m−2, in the crop phase and 80 ind. m−2 in the fallow phase. While there were no significant differences between treatments in the crop phase, by the fallow phase, densities in the high tree density (40 ind. m−2) were lower (P = 0.091) than in the low density