Modification in the pathogenicity of the Pyrenophora teres population under the influence of fungicides of the triazole and strobilurin classes
The research examined the effects of fungicides of chemical classes (triazole and strobilurine) (Amistar Gold, SC, 1 l/ha; Amistar Extra, SC, 1 l/ha; Delaro, CS, 1 l/ha) on the pathogenicity of the causative agent of net blotch of barley (ascomycetes Pyrenophora teres). A change in the aggressivenes...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2025-01-01
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| Series: | BIO Web of Conferences |
| Online Access: | https://www.bio-conferences.org/articles/bioconf/pdf/2025/30/bioconf_idsisa2025_13003.pdf |
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| Summary: | The research examined the effects of fungicides of chemical classes (triazole and strobilurine) (Amistar Gold, SC, 1 l/ha; Amistar Extra, SC, 1 l/ha; Delaro, CS, 1 l/ha) on the pathogenicity of the causative agent of net blotch of barley (ascomycetes Pyrenophora teres). A change in the aggressiveness of the fungal population was revealed after the introduction of fungicides in various concentrations into the nutrient medium according to the following indicators: the diameter of colonies of the fungus P. teres (Amistar Gold, SC – 33.1 mm, Amistar Extra, SC – 32.1 mm, Delaro, CS –31.9 mm, control – 27.0 mm), a decrease in the latency period (Amistar Gold, SC – 5.1 days, Amistar Extra, SC – 5.6 days, Delaro, CS – 4.8 days, control – 6.2 days), and average virulence of populations (Amistar Gold, SC 2.8 points, Amistar Extra, SC – 2.4 points, Delaro, CS – 1.9 points, control 3.6 points) in comparison with the variant without fungicides treatments. The suppression of the physiological processes of the phytopathogenic fungus, a decrease in the virulence of the population and a pathological acceleration of the processes of mushroom maturation under the influence of fungicides based on triazoles and strobilurines were determined. |
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| ISSN: | 2117-4458 |