Roda compactadora da semeadora adubadora na emergência da soja

Abstract

Precision fertilizer sowing machines are made up of different settings for both fertilizer and seed deposition. However, there are other components that may influence the sowing bed and the establishment of the crop. The compactor wheel has the function of closing the furrow and increasing the contact of the soil with the seed. Among the existing models, the most used is the “V” wheel system, which allows the adjustment of the opening angle and the pressure exerted on the ground. The present work was carried out in the experimental area of the Federal University of Fronteira Sul - Cerro Largo Campus, in a clayey Red Latosol. The parameters related to the emergence of soybean plants and the area of soil mobilized in different angle and pressure configurations of the "V" compactor wheel were evaluated. Results indicate that the pressure and opening angle settings of the press wheels do not affect the emergency speed and emergency speed index. The compactor wheels negatively affect the emergence speed index and stand of soybean when heavy and regular rainfall occurs after sowing.