Formation of indices of the individual productivity of spring barley varieties depending on seeding rate in the conditions of the Western Forest-Steppe

Influence of the seeding rate on the formation of the number of ears and grains per ear, weight of 1,000 grains and grains per ear. According to the results of the structural analysis of spring barley plants, the indices of individual productivity are the indicator that changes and depends on the factor studied. In particular, significant fluctuations in the indicators of the weight of 1,000 grains and grains per ear were noted under an increase or decrease in the seeding rate in all the spring barley varieties studied. It is estimated that the largest weight of 1,000 grains was in Svaroh variety – 49.7—51.8, while in Armax, Barvystyi and Tiver varieties, it was 48.5—48.9 g, 46.4—48.9 g, 46.0–47.5, respectively. Grain weight per year was 0.90—0.95 g in Armax variety, 0.91—0.98 g in Barvystyi variety, 0.96—1.03 g in Svaroh variety, and 1.01—1.04 in Tiver variety. The factor studied was less influential on the formation of the number of ears and grains per ear.