UDC 633.63
DOI 10.36461/NP.2024.72.4.013

STRESS RESISTANCE OF SUGAR BEET HYBRIDS OF DOMESTIC BREEDING WHEN TREATED WITH HERBICIDES
E.V. Zheryakov, Candidate of Agricultural Sciences, Associate Professor
Penza State Agrarian University,
Penza, Russia tel. (8412)628-151, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

The article presents the results of research to identify a sugar beet hybrid that is most stress-resistant to the negative effects of herbicides. It was found that after the first chemical weed contol on the hybrid F1 RMS 121, the phytotoxicity of the herbicide was 18.90%. It was found that at the initial stages of their growth, sugar beet plants of the F1 Skala, F1 Priliv and F1 Burya hybrids were the most resistant to the negative effects of herbicides. They resumed active growth faster after treatment with the herbicide. After the second herbi-cide treatment, the phytotoxicity of sugar beet averaged 18.22%. During herbicidal treatment, plants of the standard hybrid F1 RMS 121 significantly lagged behind in development, and the average daily increase was 1,230 g. The hybrid F1 Skala showed the greatest resistance to the negative effects of herbicides, and the mass of 100 plants was 11.1% higher than that of F1 RMS 121. After the third herbicide treatment, the phyto-toxicity decreased significantly to 12-13% compared to previous treatments. And, as before, the hybrid F1 Ska-la showed the highest resistance to the negative effects of herbicides. Phytotoxicity for sugar beet plants of F1 Burya and F1 Volna hybrids was 12.59%. The hybrids F1 Vulkan, F1 Tsunami, F1 Gorizont and F1 Priliv turned out to be less stable. They showed the ability to restore active growth after herbicidal stress at the level of 87%.
Keywords: herbicides, hybrids, sugar beet, phytotoxicity, plant weight.

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