The variable specific fuel consumption differed statistically for both evaluated treatments, and the highest value was obtained at the lowest velocity and at the lowest depth. The specific consumption is the fuel expenditure in mass unit per hour over power unit, which is influenced by fuel density, hourly consumption and power; the higher the power, the lower the specific consumption. As the variable power showed differences between depths and velocities, the lowest depth (0.05 m) and the lowest velocity (4.8 km h-1) showed less power requirement, with the highest values observed for the lowest power requirement. Similar results were obtained by Almeida et al. (2010), who worked with different gears and rotations and observed the highest specific consumption for the gear of lowest velocity, and attributed it to the longer time and, consequently, lower effective field capacity to sow the area, and higher specific consumption at the lowest velocity.