%0 Journal Article %T Evaluaci¨®n del efecto de la intensidad de labranza en la formaci¨®n de costra superficial de un oxisol de sabana en los Llanos Orientales de Colombia: III. Caracterizacion micromorfol¨®gica en superficie. %A Galvis %A Jes¨²s H %A Am¨¦zquita %A Edgar %A Madero %A Edgar %J Acta Agron¨®mica %D 2008 %I Universidad Nacional de Colombia Sede Palmira %X to understand changes that happened on soil surface under different pasture and corn systems, it was necessary to observe its microstructure using methodologies such as thin soil sections and sweeping electronic microscopy. important changes in soil fabric were observed under introduced systems compared to native savanna and forest systems. %K orinoquia %K soil crusting micromorphology. %U http://www.scielo.org.co/scielo.php?script=sci_abstract&pid=S0120-28122008000100003&lng=en&nrm=iso&tlng=en