Abstract
The present study aimed to evaluate the efficiency of the electric transmission drive of the seed metering mechanism of a precision seeder, in relation to the mechanical drive, in the distribution of corn seeds, and its effects on the development of the crop. The experiment was carried out using precision agriculture techniques - geostatistics - in a plot of 4.19 ha managed under no-tillage system. The area was divided into a grid with 35 points for each treatment (electrical transmission of the seed metering mechanism and mechanical transmission of the seed metering mechanism). To carry out the experiment, a precision seeder consisting of 7 lines was used, configured with 0.45m line spacing, being: 4 consecutive lines by electrical transmission and 3 consecutive lines driven by mechanical transmission. The electrical transmission of the seed dosing mechanism provided, in relation to mechanical transmission, a lower coefficient of variation of the linear distribution of seeds, a lower spacing index with failure, a higher normal spacing index, and a smaller difference in seeding density. As a consequence, the electrical transmission of the seed metering mechanism increased the productivity of the corn crop by 1.33% (87.96 kg ha-1) when compared to mechanical transmission.
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