Study of the inhibitory effect of the new fungicide ‘Lantseya’ against the causative agent of rice blast
https://doi.org/10.31367/2079-8725-2025-99-4-84-89
Abstract
The current paper has presented the two-year (2021–2022) study results to estimate the efficiency of a new two-component (125 g/l prothioconazole + 100 g/l picoxystrobin) fungicide ‘Lantseya’, MEC against rice blast in laboratory and vegetation trials. The purpose of the work was to study the inhibitory activity of the product against the causative agent of rice blast, determine the biological and economic efficiency, as well as the effect on the crop yield structure. There have been tested three dosages of 0.8 l/ha, 1.0 l/ha and 1.2 l/ha. During the initial laboratory tests on pure culture of Pyricularia oryzae, there has been identified high suppressive activity of the product against the seaside population of the pathogen. There has been established that ‘Lantseya’ in all tested concentrations significantly inhibits the growth of fungal colonies. The introduction of the working solution of the fungicide on the nutrient medium has provided a significant preventive effect on the development of P. oryzae, compared to the untreated control. There was a positive dynamic, there was a significant decrease in the agar area covered with mycelium even at the minimum concentration of the fungicide. In the conditions of the vegetation trial there has been found that the use of the product as a fungicide for treating rice plants significantly reduces the blast development. Under the effect of ‘Lantseya’, the infestation significantly decreased by 77.2 (0.8 l/ha), 75.9 (1.0 l/ha) and 67.1 % (1.2 l/ha) relative to the control. There has been recorded that the use of the product during the vegetation period influenced the development of plants and their productivity. There were positive effects when using ‘Lantseya’, such as increased lant growth, grain weight per plant and 1000-seed weight. Fungicidal treatment of rice crops has resulted in a significant productivity increase. There have been recorded statistically reliable productivity increases in all experimental variants using ‘Lantseya’.
About the Authors
S. V. Bezmutko
FERIPP, a branch of the FRC of Agricultural Biotechnology of the Far East named after A.K. Chaika
Russian Federation
Russian Federation
S. V. Bezmutko, researcher of the laboratory for phytopathology, 692684, Primorsky Region, v. of Kamen-Rybolov, Mir Str., 42a
Т. А. Vyborova
FERIPP, a branch of the FRC of Agricultural Biotechnology of the Far East named after A.K. Chaika
Russian Federation
Russian Federation
Т. А. Vyborova, junior researcher of the laboratory for phytopathology, 692684, Primorsky Region, v. of Kamen-Rybolov, Mir Str., 42a
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Review
For citations:
Bezmutko S.V., Vyborova Т.А. Study of the inhibitory effect of the new fungicide ‘Lantseya’ against the causative agent of rice blast. Grain Economy of Russia. 2025;17(4):84-89. (In Russ.) https://doi.org/10.31367/2079-8725-2025-99-4-84-89
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