P.S. V. Optimization of spring rape growing technology elements in the Ukrainian northern Forest-Steppe.

Spring rape, growing technology elements, and efficiency of crops, oil. To determine the influence of sowing time, seeding techniques, seed rates, fertilization, the action of herbicide roundup on spring rape yield formation and according to these factors to improve the technology of its growing with the purpose of the increase of seed production and improvement of plants quality. The methods are generally accepted. The regularities of the maximum seed productivity formation of the spring rape and seed quality indices are established, the technology of its growing is improved by means of revealing and combination of the best agrotechnical elements. It's recommended for the farms with the low and medium - level of power consumption to make the spring rape sowing in early seeding time with the usual drilling 15 cm deep with, the seed rate 1.5 mil per ha and mineral fertilizer application N60P90K90 and for the farms with the high - level of power consumption - to use mineral fertilizer N120P90K90 and herbicide roundup about 48%. For the farms of northern Forest - Steppe the yield level increases up to 25.3 hkg/ha, the total oil yield increases up to 11.6 hkg/ha and the profit also increases. Agricultural production.