Browsing by Author "Karpenko, Victor"

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    Comprehensive assessment of productivity interrelations and indicators of quality of millet seeds
    (Journal of Food, Agriculture & Environment, 2017) Karpenko, Victor; Poltoretskyi, Sergii; Mostoviak, Ivan; Berezovsky, Andriy
    The aim of the study was to determine optimal conditions for harvesting millet seeds in Right-Bank Forest-Steppe of Ukraine that would provide maximum yield of high-quality seeds. Implementation of this goal was done by determining and analyzing of multifactor relationships of forming high-yielding seed sowing of millet, by optimizing ways of its mowing and threshing and conditions that would ensure improvement of sowing qualities and yielding properties of seeds using the method of correlation pleiades. The two-factor field experiment involved the following grading factors: A (seed ripeness degree in panicle) 25–30%, 45–50, 65–70 (control) and 85–90% of seeds reached the full maturity phase; B (duration of softening rolls) direct harvesting and in three, six (control) and nine days after mowing. The sowing quality of seeds formed on mother plants was tested in laboratory conditions in autumn of the harvest year and sowing next year (the first seed progeny) with threshing by occurrence of 65–70% of seed maturity in panicle. As a result of the research it was found: 1. Between yield of maternal plants and millet plants of the first seed offspring there is a direct correlation of medium strength. 2. Between yield of maternal plants and laboratory and technological indicators of seed quality there are strong correlations that are associated with it through the integrated quality indicator of seed material and millet output. 3. The integrated quality indicator and separately each of the studied laboratory parameters of seed material quality on high level influence the formation of grain yield of plants of the first seed offspring.
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    FEATURES OF SUNFLOWER OF STRAWBERRY DEPENDING ON ADAPTIVE GROWING TECHNOLOGIES
    (Dallas, USA:Primedia eLaunch, 2019) Karpenko, Victor; Burliai, Oleksandr; Nepochatenko, Oleksandr; Butsyk, Roman; Smertenyuk, Igor
    When growing strawberries, we must pay special attention and make the transition to less harmful technologies in order to obtain environmentally friendly products. This position minimizes the possibility of using mineral fertilizers or inorganic protection in favor of organic methods or substances of biological nature that do not have a harmful aftereffect. This is of particular importance when mulching the soil with various materials, as the most advanced method of increasing the productivity of strawberry stands. Therefore, the selection of the most adapted and improved technologies for growing environmentally friendly strawberries determines the purpose of our research. The highest results were achieved in the growth productivity of strawberries when it was grown using environmental technology with mulching the soil together with black agrofibre and straw. Moreover, the average results of the assimilation surface of strawberries amounted to 28.4 thousand m2 / ha for the Dukat variety, and 29.1 thousand m2 / ha for the Malvina variety. Such results practically exceeded the data of the control variant twice. A significant increase in the number of tendrils on the strawberry bushes was about 30%. At the same time, the number of peduncles in the bushes increased by 15%. On the whole, according to the experiment, the results for strawberry varieties varied within 6.7–7.3 pcs / bush. A significant difference compared with the control option was 1.4–1.8 pcs / bush. We have achieved a 35% increase in strawberry berries when mulching the soil with black agrofibre together with straw as part of environmental cultivation technology. On average, over the years of research, the strawberry yield for the Dukat variety was 21.5 t / ha, and for the Malvina variety - 15.5 t / ha. At the same time, commodity quality of berries increased to 93.4%. The use of intensive (traditional) and biological technologies for growing strawberries, in terms of productivity, was significantly inferior to environmental technology, like other mulching materials inferior to black agrofibre.
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    Production of alternative products and renewable energy sources in rural areas
    (Opole, 2016) Karpenko, Victor; Burliai, Oleksandr
    and renewable energy sources on the example of Ukraine is analyzed. It is found that that Ukraine is an energy-dependent country, and the main sources of energy con-sumption are fossil fuels. At the same time, the share of renewable energy sources in Ukraine is less than 2% which is one of the lowest indicators in Europe. However, we possess a massive unused potential for energy savings in the form of natural rene-wable energy and, in particular, there is a big potential of biomass available for energy production. Economically justified energy potential of existing biomass waste is about 25 million tons and the energy potential of biomass which can be grown on unused agricultural lands covering more than 4 mln ha – about 13 million tons (Table 3). Due to this potential we can cover up to 18% of total primary energy consumption in Ukraine. Thus, rural areas of Ukraine have a significant potential for bioenergy deve-lopment of the country.