<b>Influence of displacement speed in the performance of a precision no-till planter in northern Rio de Janeiro State</b> - doi: 10.4025/actasciagron.v33i3.6085

Abstract

The objective of this work was to evaluate the influence of displacement speed in the performance of a no till planter. The tests were performed in the experimental area of the Universidade Estadual do Norte Fluminense Darcy Ribeiro, located in Campos dos Goytacazes, Rio de Janeiro State, Brazil. The experiment was carried out in a randomized block design, using two speeds of 2.5 and 4.4 km h^-1, with 16 replications. For sowing, the UENF 506-8 hybrid corn, with row spacing of 0.9 m and theoretical 11 cm spacing between seeds was used. When the displacement speed was intensified, there was an increase in planter wheel slippage, effective field capacity, planting depth, plate distribution mechanism speed and the occurrence of doubles. There was a decrease in the number of seeds per meter and exposed seeds with an increase in planter speed. The seeds that did not pass through the plate distribution mechanism reached a germination rate of 98%, while, both in speeds of 2.5 and 4.4 km h^-1 they showed 95.3% germination, which represents a reduction of 2.7% due to mechanical damage caused by the planter plate distribution mechanism.