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Determining the productivity potential of sugar beets as a raw material for biofuel production depending on the fertilization system

Every year the demand for renewable energy obtained from plant biomass increases, which necessitates the formation of a new state energy policy. The document that outlines the strategic guidelines for the development of Ukraine's fuel and energy complex for the period up to 2035 is the «Energy Strategy of Ukraine for the period up to 2035: Security, Energy Efficiency, Competitiveness». Among the wide variety of agricultural plants that can be used for energy purposes, a special place is occupied by sugar beets, which have a number of advantages, namely: high yield and dry matter content in root crops, their sugar content; biomass is easily fermented, excellent methane yield per unit area, etc. Diversification of sources and routes of energy supply, increasing domestic production will contribute to increasing the economic, environmental, and especially energy security of the state. The article highlights the research results on the influence of fertilization system using microbiological preparations and organic-mineral fertilizers on the productivity of sugar beets and the yield of biofuel from them. The aim of the work was to increase the energy potential of sugar beets as a raw material for biofuel production under different fertilization systems in the conditions of the Forest-Steppe of Ukraine.The subject of the research is the elements of sugar beet cultivation technology for energy purposes, their analysis and evaluation. The research was conducted at Bila Tserkva Research and Selection Station of the Institute of Biology and Ecology in 2021–2023 in the zone of unstable moisture of the central part of the Right-Bank Forest-Steppe of Ukraine. It has been established that most effective fertilization scheme for sugar beets is the application of Groundfix (5.0 l/ha) before pre-sowing cultivation and Helprost Boron (1.0 l/ha) during the leaf closure phase in rows with basic fertilization N90P90K90, with a root crop yield of 64.6 t/ha and a leaf yield of 38.8 t/ha. This allowed us to obtain the highest estimated values for bioethanol and biogas yield, which are 4.5 t/ha and 13.7 thousand m3 /ha, respectively.

Key words: sugar beets, fertilizers, biofuel, bioethanol, biogas.

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