Vokalchuk BM «Productivity of energy plantations of willow during the second cycle of cultivation» – Qualifying scientific work on the rights of the manuscript.
The dissertation on competition of a scientific degree of the Doctor of Philosophy on a specialty 201 – «Agronomy» branch of knowledge – 20 "Agrarian sciences and food". Institute of Bioenergy Crops and Sugar Beet NAAS of Ukraine, Kyiv, 2021
Actuality of theme. For Ukraine conditions, the species of willow, Salix viminalis L. and its derivatives is extremely promising in the field of renewable energy. The advantage of willow when used for biofuels is high heat transfer and a low content of harmful substances released during combustion. Leading scientists in the field of crop production and bioenergy are working to introduce high-yielding varieties and hybrids into production. But at the same time, they need to study them in different soil and climatic zones of Ukraine, as well as the creation of modern technologies for growing to specific conditions.
In this regard, it is important to develop scientific bases and practical proposals for the selection of willow varieties that are most suitable for growing on energy plantations in soil and climatic conditions of Ukraine and to develop effective technological schemes for their creation, cultivation, and operation. This dissertation is aimed at solving the above problems. Vokalchuk BM «Productivity of energy plantations of willow during the second cycle of cultivation» – Qualifying scientific work on the rights of the manuscript.
The dissertation on competition of a scientific degree of the Doctor of Philosophy on a specialty 201 – «Agronomy» branch of knowledge – 20 "Agrarian sciences and food". Institute of Bioenergy Crops and Sugar Beet NAAS of Ukraine, Kyiv, 2021
Actuality of theme. For Ukraine conditions, the species of willow, Salix viminalis L. and its derivatives is extremely promising in the field of renewable energy. The advantage of willow when used for biofuels is high heat transfer and a low content of harmful substances released during combustion. Leading scientists in the field of crop production and bioenergy are working to introduce high-yielding varieties and hybrids into production. But at the same time, they need to study them in different soil and climatic zones of Ukraine, as well as the creation of modern technologies for growing to specific conditions.
In this regard, it is important to develop scientific bases and practical proposals for the selection of willow varieties that are most suitable for growing on energy plantations in soil and climatic conditions of Ukraine and to develop effective technological schemes for their creation, cultivation, and operation. This dissertation is aimed at solving the above problems. The yield of dry willow biomass after the second three-year growing cycle was the highest in the variety 'Tora' for planting schemes 0.75-1.50-0.75 m for planting densities of 15 thousand pieces / ha - 65.3 t / ha, in variant with a density of 12 thousand units / ha, this figure was 59.3 t / ha. The highest yield at the end of the second growing cycle was formed by the variety ‘Tora’ in the variant with the maximum fertilization dose N70 - 74.1 t / ha, which is 13% more than the control, where the yield was 65.3 t / ha. The ‘Ternopilska’ variety turned out to be less productive. In the variants with mineral fertilizers, the yield of plantations of the ‘Ternopilska’ variety increased compared to the control without fertilizers (55.6 t / ha) with an increase in their dose by 3.7 and 9.3 t / ha, respectively.
