Несправжня борошниста роса огірка за біологізованої системи вирощування

M. V. Gurin; O. V. Soldatenko; L. V. Pylypenko

doi:10.32848/agrar.innov.2025.33.15

M. V. Gurin Institute of Vegetable and Melon Growing of the National Academy of Agrarian Sciences of Ukraine https://orcid.org/0009-0001-8270-4014
O. V. Soldatenko Institute of Vegetable and Melon Growing of the National Academy of Agrarian Sciences of Ukraine https://orcid.org/0009-0008-9981-2856
L. V. Pylypenko Institute of Vegetable and Melon Growing of the National Academy of Agrarian Sciences of Ukraine https://orcid.org/0000-0002-0353-6383

DOI: https://doi.org/10.32848/agrar.innov.2025.33.15

Keywords: peronosporosis, biofungicide, seed yield, disease prevalence, biological product, resistance

Abstract

Purpose. To assess the impact of a biologized system of cucumber fertilization and protection on the prevalence and development of cucumber powdery mildew and seed yield. Methods. The experiment to study the biologized cultivation system was based on the principle of strip placement of vegetable plants and legume-cereal mixtures. The mixture was alternated with table beet and cucumber crops. The experiments were conducted on the parental components of the Kasatik F1 hybrid and the Dzherelo variety. The cucumber plant protection system included the use of the biofungicide Mycohelp (3 l/ha) in fertigation, starting from the first every 25 days, against a complex of diseases; on vegetative mass, every week starting from the true leaf phase, Phytohelp (2 l/ha) alternated with Phytocide (3 l/ha) + Liposam (1 l/ha). The prevalence and intensity of downy mildew development and seed yield were determined. Results. The use of a biological cultivation system with the use of Mikochep, Fitohelp, and Fitozid preparations reduces the prevalence and development of bacterial spot and downy mildew in cucumbers by 6.3–18.8 % over the years, and the development of the disease by 4.3–8.7 %. The Kasatik M variety showed the greatest resistance. The obtained cucumber seed yield of 120.0–163.3 kg/ha indicates the suitability of the studied samples for cultivation in organic farming systems. The biological protection system statistically significantly increases cucumber seed yield by 2.4–13.3 kg/ha over the years of research. The highest yield over the years of research was obtained by the maternal form of the Kasatik hybrid, the Dzherelo variety had an average yield, and the lowest yield was obtained by the paternal form of the Kasatik hybrid. Findings. The prevalence of downy mildew during our research years did not reach the maximum values characteristic of the research area. The use of Mikochep, Fitohelp, and Fitozid on cucumbers statistically significantly reduced the manifestation of the disease and allowed us to obtain a sufficient level of seed yield.

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Powdery mildew of cucumber under biologized growing system

Abstract

References