Abstract

The research was carried out in the sunflower sowing on 18 plots on a total area of 380ha. The sowing was done in the last decade of March 2018 (south Backa) and the first decade of April 2018 (north of Backa). Soil preparation for sowing was in the system of reduced tillage, done with Vibroflex 7,4m working width. Sowing was done with 4 planters (2NG and 2NH) with 12 seeding metering unit mechanically powered, with vacuum pressure and pneumatically section control. Inter row spacing is 0,7m. Sowing quality was checked in accordance with ISO 7256-1: 1984 / Sowing equipment. Modern seeders are equipped with sensors that are tasked with tracking the seeded population and to alarm problems with deviation from the norm.