Influência do deslizamento da roda motriz de uma semeadora/adubadora de plantio direto no espaçamento longitudinal de sementes de milho

Abstract

The present work was conducted to evaluate the operational conditions of a no tillage system for maize culture. Two different speeds was considered, 4.1 km/h and 7.2 km/h in three different depths of planting, 3, 5 and 7 cm. To consider the field conditions the soil moisture and the soil resistance to penetration was determined. The experiment was mounted in randomized blocks with four replications. The longitudinal seed spacing, effective deposition depth and the wheel sliding of planter were measured. The analysis of variance didn t indicate no significant differences in longitudinal seed spacing in relation of different depths and speeds. It was is expected in function of feeder mechanism characteristics of seeder. In function of the irregularity presented in the longitudinal spacing, the influence of the wheel sliding was considered in feeder mechanism system. The consideration of wheel sliding for correction in seed spacing was not enough to guarantee an adjusted regulation. The present work shows the necessity of more studies to identify other factors not yet studied in feeder mechanism functionality for seed distribution.