In the paper, the authors addressed the fact that the continuous improvement of pastures by mechanized sowing and undersowing of local shrubs, sub-shrubs, and perennial grasses is one of the main conditions to maintain the fodder productivity and to combat pasture degradation. This will increase the pasture productivity up to 10 times, compared with natural fodder land. The seeders have been developed with new pick-up drums equipped with measuring grooves, which, during operation, significantly reduce the crushing of seeds, ensure uniform high-quality sowing, do not lead to a decrease in their natural germination. Sowing is carried out following agricultural requirements. The parameters of a pick-up drum with measuring grooves are determined.