Russian Federation
Abstract. The purpose of the experiment was to conduct a comparative analysis of the antagonistic activity of drugs obtained from microorganisms used for inoculation of barley seeds of the Rodnik Prikamya variety. Methods. The assessment of seed disease contamination was carried out in accordance with GOST 12044-93 “Crop Seeds”. The scientific novelty. The possibility of using microorganisms as biofungicides based on Trichoderma sp. + Fischerella muscicola (both separately and together with chemical fungicides – seed protectants) to protect spring barley seeds from seed infection caused by fungi of the genus Fusarium has been studied. The fungicidal and growth-regulating activity of the fungi Trichoderma sp. and Fischerella muscicola on barley seeds was studied. Results. The most effective when treating seeds were chemical preparations against a natural background without infection: “Fludimaks”, “Sinkler” and “Selest Top”. The number of affected seedlings was 20–30 %. The least damage occurred when the seeds were treated with the “Selest Top” disinfectant – 20 %. When seeds are infected with a mixture of preparations of Trichoderma sp. + Fischerella muscicola and the spread of Fusarium was at the level of 34 %. In the second block of studies with infected seeds, the infection of seeds in the control was 58 %, and after treatment with chemical disinfectants it decreased to 28–36 %. In the variant where infected seeds were inoculated with the preparations “Selest Top” and “Fludimaks” – 28 % and 36 %, respectively. The variant based on Trichoderma sp. + Fischerella muscicola was slightly inferior to chemical disinfectants, where the contamination with micromycetes was 30 %. When analyzing the effect of microbial preparations on morphometric parameters, it was found that the length of the seedlings ranged from 6.1 to 9.6 cm. Chemical seed protectants had a stimulating effect on the seedlings. Thus, the preparations “Selest Top” and “Fludimaks” stimulated the development of seedlings; the length ranged from 9.3 to 9.6 cm compared to the control.
Fusarium culmorum, barley Rodnik Prikamya, Trichoderma sp., Fischerella muscicola, Helminthosporium sativum, biological product, chemical disinfectant
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