Dosadores de precisão na semeadura do milho

Abstract

Corn is a crop with great prominence in the agricultural scenario, having economic and social importance worldwide. Its great use and essentiality has provided new implementations of techniques and management with the crop, resulting in high yields. Taking into account the constant evolution of the technological levels of precision fertilizer sowing machines, the concern with the quality in the sowing process has increased. Depending on the type of the seed dispenser, conductor and speed, can directly affect seed distribution, plant density and arrangement, and final yield per area. Based on these hypotheses, the objective of this study was to evaluate the sowing quality in maize crop using three different seed feeders, submitting one of them to two types of conductor: straight and curved. The evaluations were: longitudinal plant distribution, the performance of the dosers, and the influence of the straight or curved conductor. With the results, it is noted that the three dosers evaluated in the experiment and the use of two distinct conductors in one of the dosers did not present significant difference between them. As the velocity increased, there was a decrease in the percentage of acceptable spacing, and consequently increased double and failed spacing, although there was no significant difference between the two tested speeds.