This paper presents a infiltration rates study on cultivated soil, determined by sprinkling and by means of water impoundment in cilinder infiltrometer. Infiltration rates obtained with cylinder infiltrometers were compared with infiltration rates under sprinkler irrigation. We obtained high degree of correlation, between dates of two methods. We believe this correlation must be kept for diferents soil types. In any way, we can say, should be possible to estimate infiltration rates for sprinkler irrigation, from cilinder infiltrometer measurements if enough replications are made. The cylinder infiltrometer, that we have used was according to Muntz, and some improvement was necessary on the apparatus, in order of obtaining a better reading and constant hydraulic head.