The objective was to study the influence of increasing the speed of sowing on the soybean crop, with horizontal seed plate and pneumatic seed distribution systems. The experimental design adopted was randomized block with 5 replicates. The sowing speeds were 4, 6, 8, 10 e 12 km h-1. The variables were: population of plants emerged, longitudinal distribution and components of yield. It was applied the polynomial regression for horizontal seed plate and pneumatic systems, for each variable. The regressions were significant only for the pneumatic system on longitudinal distribution. The components of soybean crop yield have not changed with the increase of the sowing speed until 12 km h-1 in the seed dispensing systems of horizontal and pneumatic plates.
components of yield; horizontal and pneumatic plates
