The objective of the studies was to analyze the soil moisture dynamics of upland fields in the Cerrados area of Brazil. Soil moisture level obtained by using tensiometers set in the soil layers was compared with the soil moisture dynamics simulated by the TANK-model. It was found that the actual soil moisture dynamics agreed well with the simulated results, suggesting that the TANK-model could be used to predict the soil moisture dynamics of upland fields based on meteorological and soil property data.