YIELD AND QUALITY OF WINTER RAPESEED SEEDS, DEPENDING ON THE PROCESSING OF SOILS, THE TIME AND METHOD OF SOWING IN THE FOREST-STEPPE OF UKRAINE

The results of research conducted in 2012-2015 are presented. On ordinary black soil in the forest-steppe of Ukraine. The influence of the main soil treatment, the method and the time of winter rapeseed sowing on its seed productivity was studied. It was found that the most effective sowing is to be carried out in the first decade of September with a row spacing of 15 cm, while the yield of seeds is substantially increased. Factors of soil cultivation – plowing at 25-27 cm or disking at 12-14 cm at the level of yields are significantly weaker. Advantage is plowing, however, in a favorable year for moistening, the difference in yield levels for both soil treatment methods studied has not been established. The investigated factors affect the main indicators of seed quality – the content of fat and protein and their conditional collection per hectare. The greatest amount of fat in the rapeseed seeds of winter crops accumulates along the background of plowing. The studied factors did not significantly influence the protein content. The maximum conditional yield of fat (1.97 t/ha) and protein (1.05 t/ha) was determined at sowing in the 1^st of September in the usual rowing method for plowing