Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 21 ISSUE 4
Written by Raisa VOZHEHOVA, Tetyana MARCHENKO, Olena PILIARSKA, Yurii LAVRYNENKO, Nataliya HALCHENKO, Pavlo LYKHOVYD

Modern crop production is aimed to decrease anthropogenic loads on environment due to the replacement of chemical pesticides with biological preparations. The study on the efficiency of biological preparations Fluorescein BT, Trichopsin BT, and Biospectrum BT in corn hybrids of different ripeness groups (FAO 190, 290, and 420), cultivated in the conditions of irrigation in the Steppe zone of Ukraine, was conducted during 2018–2020. The goal of the study was to evaluate the level of technical efficiency of the biopreparations against common diseases (corn smut and fusarium of the cob) and insect (European corn borer), and their impact on the crop yield. It was determined that the studied biopreparations decreased corn smut infestation rate in the hybrids of corn by 1.7–4.2%, while the infestation rate of fusarium disease dropped by 1.6–3.9%. European corn borer infestation was reduced under the application of Trichopsin BT and Biospectrum BT, which possess insect-fungicidal and growth-promoting effects, by 2.7–4.6% depending on the genotype of the hybrids. High technical efficiency of the studied preparations was determined: Fluorescein BT against corn smut showed technical efficiency of 24.0–30.4%; Trichopsin BT – 38.2–57.9%; Biospectrum BT – 46.0–58.6%, respectively. Application of the biological preparation Fluorescein BT provides the formation of the highest grain yield of corn, which averaged to 14.89 t/ha. The maximum yield in the study was recorded for the hybrid Arabat (FAO 420) under the application of the biopreparation Fluorescein BT – 17.06 t/ha. At the same time, this variant provided the highest gross value of the grain product – 3,968 EUR/ha. The study results provide a proof of high efficiency of the studied biological preparations in the corn cultivation under irrigation.

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