Browsing by Author "Karpenko, V."

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    Anatomical changes in the epidermis of winter pea stipules and their area under usage of herbicide, stimulator of plant growth and microbial preparation.
    (Vali Press, 2021) Karpenko, V.; Boiko, Y; Prytulіak, R.; Datsenko, A.; Shutko, S.; Novikova, T.
    The use and search for new methods and ways to reduce negative herbicidal effect on crops is a key factor in increasing the level of yield and quality in modern agricultural conditions, including cultivation of crops such as winter peas. One of the factors that reflects the depth of the effect of herbicides on the plant organism may be the anatomical structure of the leaf, thus, the aim of the research was to study the characteristics of epidermis and size of stipules of winter peas with the complex use of stimulator of plant growth and microbial preparation in herbicide cultivation technology.
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    Combined application of microbial preparation, mineral fertilizer and bioadhesive in production of leek
    (Estonian Agricultural University, 2020) Karpenko, V.; Slobodyanyk, G.; Ulianych, O.
    The research deals with additional fertilizing of leek cultivars Goliath and Tango with bacterial preparation Organic-balance and mineral fertilizer DripFert N20P20K20 combination with adhesive agent of a natural origin Liposam. Field research was performed on the experimental plots of the Department of Vegetable Growing of Uman National University of Horticulture. The research focused on microbiological processes and formation of productivity in the leek crops depending on the combination of preparations. It has been established that the number of bacteria Azotobacter in the rhizosphere of leek increased 2.8 times after a four-time fertilizing with bacterial preparation Organic-balance and bioadhesive Liposam during vegetation. The maximum number of bacteria, including Azotobacter, in the rhizosphere of leek, was recorded after a four-time fertilization with DripFert N20P20K20-balance and Liposam. The share of influence of additional fertilization on the microbiota of the rhizosphere made up 77 97%. Leek cultivar Tango produced a larger assimilative leaf surface. Depending on the fertilizing the maximum leaf surface and photosynthetic potential of leek cultivars Tango and Goliath were recorded under combination of Organic-balance + DripFert N20P20K20 + Liposam. The yielding capacity of variety Goliath was better than that one of the variety Tango regardless of fertilizing. To make the growing technology of leek more environmental friendly it is advisable to introduce in the growing technology bacterial preparation Organic-balance together with Liposam. Utilization of these preparations improves crop yield, which makes up 0.6 0.7 t ha-1 for variety Goliath and 1.1 2.7 t ha-1 for variety Tango correspondingly. The investigated leek varieties had the maximum yields under combined application of Organic-balance + Liposam with fertilizer DripFert N20P20K20 24% higher than provided by plants grown without fertilization.
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    Content of malondialdehyde and activity of enzyme glutathione- S-transferase in the leaves of emmer wheat under the action of herbicide and plant growth regulator
    (Agronomy Research, 2019) Karpenko, V.; Pavlyshyn, S.; Prytulіak, R.; Naherniuk, D.
    The article presents the results of vegetation experiment on the influence of different rates of herbicide Prima Forte 195 – 2-ethylhexyl ether 2.4-D + aminopyralid + florasulam (0.5; 0.6 and 0.7 L ha-1) under different application methods of plant growth regulator of a natural origin Wuxal BIO Vita (Ascophyllum nodosum extract + microelements) on the content of malondialdehyde (MDA) as an important indicator of the intensity of peroxide oxidation of lipids in plants and on the activity of enzyme glutathione-S-transferase (GST) in the leaves of emmer wheat. Experimental scheme included 16 experimental variants: 1 – without application of preparations and pre-sowing treatment of seeds (control); 2, 3, 4 – Prima Forte 195, applied to vegetative plants at the rates 0.5, 0.6 and 0.7 L ha-1; 5 – Wuxal BIO Vita at the rate of 1.0 L ha-1, applied to vegetative plants; 6, 7, 8 – Prima Forte 195 at the rates of 0.5, 0.6 and 0.7 L ha-1 in tank mixtures with Wuxal BIO Vita at the rate of 1.0 L ha-1, sprayed on vegetative plants; 9 – pre-sowing treatment of seeds with Wuxal BIO Vita at the rate of 1.0 L t-1 (background); 10, 11, 12 – Prima forte 195, applied to vegetative plants at the rates of 0.5, 0.6 and 0.7 L ha-1 at the background of pre-sowing treatment of seeds with Wuxal BIO Vita at the rate of 1.0 L t-1; 13 – Wuxal BIO Vita at the rate of 1.0 L ha-1 (applied to vegetative plants, treated before sowing with Wuxal BIO Vita at the rate of 1.0 L t-1); 14, 15, 16 – Prima Forte 195 at the rates of 0.5, 0.6 and 0.7 L ha-1 respectively, in tank mixture with Wuxal BІО Vita at the rate of 1.0 L ha -1 – spraying of plants and pre-sowing treatment of seeds with Wuxal BІО Vita 1.0 L t-1. It has been found that under the application of Prima Forte 195 the redox state in the leaves of emmer wheat increased considerably in the direction of increasing the content of MDA. It has also been proved that herbicide Prima Forte 195 and its mixtures with plant growth regulator (PGR) Wuxal BIO Vita caused the changes in the activity of enzyme glutathione-S-transferase, which slightly increased in the initial period in the variants of integrated application of herbicide and plant growth regulator. However, later the GST activity in the variants of integrated application of herbicide and PGR decreased, which indicates stabilization and a positive influence of integrated application of preparations on the detoxification processes in the crops of emmer wheat.
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    Economy’s agricultural sector potential in Ukrainian energy self-sufficiency forming
    (Київ, 2015) Karpenko, V.; Burliai, O.; Mostoviak, I.
    The authors analyze the alternative types of energy production in Ukraine. It has been found out that Ukraine is an energy-dependent country and the main sources of energy consumption are fossil fuels. The share of renewable energy sources in Ukraine is less than 2%, which is one of the lowest indicators in Europe. However, Ukraine has a massive unused potential for energy savings in the form of natural renewable energy sources. In particular, there is a large amount of biomass available for energy production. The 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 million hectares is about 13 million tons. Due to this potential, we can cover up to 18% of total primary energy consumption in Ukraine from two above-mentioned sources. Thus, agriculture of Ukraine has a significant potential for its bioenergy development.
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    Microorganisms number in sorghum (Sorghum bicolor (L.) Moench) rhizosphere after herbicide, plant growth regulator, and a biopreparation use
    (Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie, 2021) Karpenko, V.; Krasnoshtan, V.; Mostoviak, I.; Prytuliak, R.
    In the modern agricultural production, the use of herbicides and other biologically active substances is an important part of the cultivation technologies of most cereals, including the grain sorghum. It is known that most preparations, including the chemical ones, can directly or indirectly influence the development of microorganisms in the rhizosphere of plants, but the nature of their effect on the microbiota of grain sorghum rhizosphere has not been studied enough, which reasoned the relevance of this research. Microbiological activity of the grain sorghum rhizosphere (hybrid Milo W) was studied during 2019–2020 under the treatment by the herbicide Citadel 25 OD (0.6; 0.8 and 1.0 l/ha), plant growth regulator Endophit L1 (30 ml/ha) and biological preparation Bioarsenal (800 g/ 100 kg). The analysis of the obtained experimental data showed that use of the studied preparations both separately and in different compositions had a stimulating effect on the number of grain sorghum rhizosphere microbiota, which was observed in its increase, especially in variants with the combined use of the herbicide Citadel 25 OD, plant growth regulator Endophit L1 and the biopreparation Bioarsenal (compared to the control the number of rhizosphere microbiota increased by 29.4–80.6% in average by groups).
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    Ukrainian gardening market trends under globalization
    (Economic Annals-XXI, 2016) Karpenko, V.; Burliai, O.; Burliai, A.; Mostovyak, M.
    Despite the fact that horticultural production has long history in Ukraine, national market is still going through its formative phase. Amid constant shocks in the political-economic system of the country – dismantling of central planning system, price liberalization, and great disparities between prices for industrial products and agricultural, military armed hostilities and occupation on the part of Ukrainian territory – once highly profitable horticultural industry suddenly turned into loss-making one. National gross production substantially decreased, horticultural production mostly shifted to small farms. The volume of fruit exports is drastically reduced, planting areas are rapidly declining and rates of reproduction of perennial plants dropped to a critical level. In Ukraine in the last decade individual farms became major producers of fruit and berries with share combined around 83%. However, Ukraine can soon become a full player in the European market of horticultural products. This is due to several factors: geographical location of Ukraine; favourable climate conditions for different fruits and berries; low labour cost and low probability of wage increases in the short and long term; potential to increase supplies to the European export markets after the entry into force of the Association Agreement with the EU; organic production of horticulture which development occurs rapidly in Ukraine.