The values of mean power of the drawbar (Table 2) did not differ statistically between the velocities, but showed difference (p < 0.05) between the working depths, with higher requirement of power at the greatest depth (0.15 m). This fact can be attributed to the higher power demand of the tractor when the agricultural implements are operating at greater depths. Since the shank is at a greater depth, the tractor will need more power to disrupt a larger mobilized soil area, according to the results in Table 2. These results are similar to those obtained by Cepik et al. (2010) who worked with two seeders, one with three lines and the other with five lines, and observed higher requirement of tractor power at the greatest depths.