Savchuk Y. Seed Productivity of Winter Rape Varieties Depending on the Elements of Cultivation Technology in the Right Bank Forest-Steppe of Ukraine

This thesis addresses the issue of obtaining high quality and sustainable seed productivity and aims at improving the elements of winter rape varieties' growing technology in the Right Bank Forest-Steppe of Ukraine. The thesis provides the primary analysis of the Wuxal Microplant, Wuxal Terios and Wuxal Ascofol micro-fertilizers' efficiency in winter rape seeds' pre-sowing conditioning and further foliar feeding that impact seed productivity under the conditions of the Right-Bank Forest-Steppe of Ukraine. The paper highlights the components of adaptability and productivity of the Snihova Koroleva, Andromeda, and Vesuviy winter rape's varieties and identifies the most suitable ones for the introduction in agricultural production. The thesis identifies and improves optimal terms for sowing and the use of micro-fertilizers thus maximizing their impact upon the formation of winter rape's seed productivity and yield capacity. The thesis suggests a number of scientific and production-oriented recommendations concerning the measuring of winter rape's seed productivity. According to the results of research, we recommend to implement the following technological elements of growing winter rape's seeds in the Right-Bank Forest-Steppe of Ukraine: optimal sowing time should be August 21, Wuxal Microplant and Wuxal Terios micro-fertilizers should be used for the seeds' pre-sowing conditioning at the rate of 1.0 l/t and further foliar feeding at the 4–6 true leaves' phase at the rate of 2.0 l/ha. The Snihova Koroleva winter rape's variety manifested better adaptability to biotic and abiotic environmental factors. The Vesuviy variety is estimated as perspective and therefore can also be recommended for cultivation in the Right Bank Forest-Steppe of Ukraine.