Vásquez, N.*, Salazar, F., Dörner, J.
Original Research Article,
In order to determine the effect of soil tillage and natural processes of re-structuration that occur in a Andisol during a wheat growing season, this study evaluated the temporal variability of the physicomechanical properties of a Andisol under wheat crop. The assesment was carried out using both laboratory and in situ measurements to compare the registered values with those described in the literature as critical values for correct plant grow. The laboratory measurements (precompression stress, cohesion, air conductivity and bulk density) required undisturbed samples which were collected in 110 cm3 cylinders, at 5 cm depth, 10 times during the crop development. For the field measurements, the evolution of the moisture content and penetration resistance of the soil, as well as rainfall and soil temperature were recorded.