The operational field capacity did not differ statistically for the depth variables, and the velocities differed statistically; the highest velocity (6.8 km h-1) showed the highest OFC value. OFC is directly related to the displacement velocity of the set, the effective working width of the seeder and operation efficiency; thus, with the increment in the displacement velocity, there is a direct relationship for the increase in OFC. These results corroborate those of Santos et al. (2008), who observed increase in OFC with the increase in velocity, working with velocities of 4.9, 6.5 and 7.9 km h-1.