The application efficiency of organic fungicides against soybean diseases in the central zone of the Krasnodar region of the Russian Federation

Alexander Bushnev,Sergey Babenko,Nadezhda Bushneva,O Loretts,A Ruchkin,S Vinogradov,V Kukhar,N Ojha

doi:10.1051/e3sconf/202022202020

Alexander Bushnev, Sergey Babenko + Show 6 more

Open Access

https://doi.org/10.1051/e3sconf/202022202020

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Abstract

Diseases are one of the main factors limiting the receiving of high yields of soybean. The use of biopreparations for plant protection will result in successful disease control and improve the quality of products. In 2018-2020, at V.S. Pustovoit All-Russian Research Institute of Oil Crops (Krasnodar), we studied the application effectiveness of biopreparations under the trademarks of BSka-3 with the active ingredients Trichoderma veride, Pseudomonas koreensis, Bacillus subtilis and BFTIM with the active ingredient Bacillus amyloliquefaciens against soybean diseases. We applied organic fungicides for seed treatment and on vegetative plants at the budding stage. The variants BSka-3 G + BFTIM G (62 %) and BSka-3 Zh + BFTIM Zh (50 %) showed the highest biological effectiveness against purple Cercospora blight, and the variant BSka-3 E + BFTIM E showed 66 % and 52 % of effectiveness against pustular and angular spot diseases. The biological effectiveness of Pyraclostrobin, EC against purple Cercospora blight, pustular and angular spot diseases was the lowest – 21, 12, and 10 %, respectively. We observed the best economic efficiency in case of application of BSka-3 E + BFTIM G – 2.31 t/ha.

Highlights

Soybean (Glycine max (L.) Merr.) occupies a leading place among oil crops in the world production
Each system consisted of: treatment of soybean seeds with biofungicides of the company OOO “Biotechagro” under the BSka-3 trademark based on Trichoderma veride, Pseudomonas koreensis, Bacillus subtilis and treatment of plants at the budding stage with biofungicides of the company OOO “Biotechagro” under the BFTIM trademark based on Bacillus amyloliquefaciens
We found that the laboratory germination of seeds untreated with fungicides was lowered – at the level of 79 % due to the presence of a seed infection complex, consisting of the fungi Alternaria spp., Fusarium spp., Mucor spp. and bacteria (Xanthomonas spp., Pseudomonas spp.) with the number of affected seeds and seedlings 28, 12, 15, and 40 %, respectively

Summary

Introduction

Soybean (Glycine max (L.) Merr.) occupies a leading place among oil crops in the world production. It is cultivated for protein and oil, and has a fodder, nutritional and technical importance. As a nitrogen-fixing crop, soybean improve the soil structure, enrich it with nitrogen and, it is one of the best predecessors for cereal crops. It can be grown in short (2-3 field) crop rotations with cereals [1,2,3]. The differences in climate, distribution of pathogens and crop cultivation practices affect the prevalence of disease in each region [7, 8]

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