The effectiveness of the use of entomopathogenic nematodes and their symbiotic bacteria in the potato protection system against diseases and pests in different agro-climatic zones of Russia

Zinaida Kotova; Leonid Danilov; Tatyana Danilova; Yury Tyukalov

doi:10.55186/25876740_2025_68_5_647

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THE EFFECTIVENESS OF THE USE OF ENTOMOPATHOGENIC NEMATODES AND THEIR SYMBIOTIC BACTERIA IN THE POTATO PROTECTION SYSTEM AGAINST DISEASES AND PESTS IN DIFFERENT AGRO-CLIMATIC ZONES OF RUSSIA The effectiveness of the use of entomopathogenic nematodes and their symbiotic bacteria in the potato protection system against diseases and pests in different agro-climatic zones of Russia

АА Аа

Published in INTERNATIONAL AGRICULTURAL JOURNAL · Issue 5 · Pages 647–652 · Rubric: Scientific support and management of agrarian and industrial complex

DOI: https://doi.org/10.55186/25876740_2025_68_5_647 · EDN: LNZYEQ

Received: 16.05.2025 Accepted: 25.06.2025 Published: 30.09.2025

Authors

Zinaida Kotova

Leonid Danilov

Tatyana Danilova

Yury Tyukalov

Zinaida Kotova

Academic degree: doctor of agricultural sciences

North-Western Center for Interdisciplinary Food Security Researcher of Problems of Food Maintenance leading researcher · department of agriculture and crop production · Russian Federation · Pushkin

Leonid Danilov

Academic degree: doctor of agricultural sciences

All-Russian Research Institute of Plant Protection leading researcher · laboratory of microbiological plant protection · Russian Federation · Pushkin

Tatyana Danilova

Academic degree: candidate of agricultural sciences

Yury Tyukalov

Academic degree: candidate of technical sciences

ABSTRACT

Laboratory and field studies conducted in 2023-2024. They were aimed at studying the pathogenicity of the entopathogenic nematodes (EPN) of the Steinernematidae family and their symbiotic bacteria Xenorhabdus nematophila and Xenorhabdus bovienii for pests (pounds) and causative agents of potato diseases (steamers, risoctonosis, and risoctonosis. phytoftorosis) in the conditions of the North-West and the Republic of Karelia. As a result of a comparative analysis of the antibiotic activity of symbiotic bacteria carried out on the basis of measuring the inhibition zones in vitro, it was revealed that all the studied strains of bacteria show activity against Rhizoctonia solani. The best results were demonstrated by the strain of X. nematophilus, which is the symbiont of the nematode of the type S. carpocapsae, its effectiveness was 45%.The immunological assessment of resistance to diseases after cleaning tubers showed that the biological drug Nemabakt and the symbiotic bacteria of nematodes X. bovienii most effectively protect tubers from the underlying diseases and wires during the vegetation. Against the souns ordinary, the best result was shown by Nemabakt when processing tubers before planting, completely suppressing the development of pathogen (100 %). The combination of Nemabakt with symbiones of nematodes S. feltiae protense reduced the affection of tubers by 59%. To combat rhizoctoniosis, Nemabakt and its combination with X. bovienii symbiontes were also effective, reducing the damage to tubers by 95-100 %. To protect against the wireworm, the most effective (at the level of chemical control) was the bacterial drug Nemabakt, its effectiveness was 59%. Analysis of productivity showed that the use of the studied drugs made it possible to increase potato yield by 20-46 %. The largest growth in the harvest of tubers was achieved when using S. feltiae protense Symbiones.

KEYWORDS

entomopathogenic nematodes, potato, scab, rhizoctoniosis, late blight, wireworm

Funding

The study was carried out at the expense of the Russian Scientific Fund (No. 24-26-20029) and the St. Petersburg Scientific Fund.

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Kotova Z. P., Danilov L. G., Danilova T. A., Tyukalov Y. A. The effectiveness of the use of entomopathogenic nematodes and their symbiotic bacteria in the potato protection system against diseases and pests in different agro-climatic zones of Russia // INTERNATIONAL AGRICULTURAL JOURNAL. 2025. no. 5. pp. 647-652. DOI: https://doi.org/10.55186/25876740_2025_68_5_647. EDN: LNZYEQ. (Date of access 09.10.2026).

MLA

Zinaida Kotova, Danilov L. G., Danilova T. A., Tyukalov Y. A.. "The effectiveness of the use of entomopathogenic nematodes and their symbiotic bacteria in the potato protection system against diseases and pests in different agro-climatic zones of Russia." INTERNATIONAL AGRICULTURAL JOURNAL.5 (2025): 647-652. DOI: https://doi.org/10.55186/25876740_2025_68_5_647. EDN: LNZYEQ.

APA

Kotova Z. P., Danilov L. G., Danilova T. A., Tyukalov Y. A. (2025). The effectiveness of the use of entomopathogenic nematodes and their symbiotic bacteria in the potato protection system against diseases and pests in different agro-climatic zones of Russia. INTERNATIONAL AGRICULTURAL JOURNAL(5), 647-652. https://doi.org/10.55186/25876740_2025_68_5_647 EDN: LNZYEQ.

Chicago

Zinaida Kotova, Danilov L. G., Danilova T. A., Tyukalov Y. A.. "The effectiveness of the use of entomopathogenic nematodes and their symbiotic bacteria in the potato protection system against diseases and pests in different agro-climatic zones of Russia." INTERNATIONAL AGRICULTURAL JOURNAL, no. 5 (2025): 647-652. https://doi.org/10.55186/25876740_2025_68_5_647. EDN: LNZYEQ.

WIKI

{{cite journal | author = Kotova Z. P., Danilov L. G., Danilova T. A., Tyukalov Y. A. | title = The effectiveness of the use of entomopathogenic nematodes and their symbiotic bacteria in the potato protection system against diseases and pests in different agro-climatic zones of Russia | journal = INTERNATIONAL AGRICULTURAL JOURNAL | year = 2025 | issue = 5 | pages = 647-652 | doi = 10.55186/25876740_2025_68_5_647 }} EDN: LNZYEQ

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