The purpose of this study was to evaluate the spatial relation of physical and mechanical attributes of a cohesive Ultisol cultivated with sugarcane. Forty nine georeferenced points were established for the collection of samples, with 7 x 7 grid, forming a mesh of 120 x 120 m. The trenches were opened at two layers (0-20 and 20-40 cm) for the collection of disturbed and undisturbed samples. The normal distribution was observed in all variables. Strong degree of spatial dependence was also observed for most variables. The plastic limit showed nugget effect. The highest range was found for the liquid limit (0-20 cm) compaction degree (0-20 cm) and lowest for soil moisture (0-20 cm), IP and organic carbon (20-40 cm). Kriging maps showed an inverse correlation between density and porosity and strong correlation between clay and organic carbon as well as between the clay and the limits of consistence. For most variables, there was spatial dependence up to 20 m, indicating that for parametric analysis, samples should be collected at distances over 20 m.
proctor; consistence limits; spatial dependence
