The effect of treatment of various strains of Bacillus subtilis on the productivity of winter wheat

Abstract

Abstract In the conditions of the Rostov region of the Russian Federation on ordinary micellar-carbonate chernozems, the effect of Bacillus subtilis strains during the processing of winter wheat seeds on the productivity and quality of grain of the zoned varieties Grom and Kalym was studied. The issues of influence of strains 10-VISR, IPM 215, VKM-V-2605D and 26D on field germination of seeds, winter hardiness and survival of plants for harvesting are considered. The analysis of the dependence of the structure of the yield and the yield of wheat varieties on the Bacillus subtilis strain is given. It was found that the treatment of seeds with the studied strains increases the germination rate for the Kalym variety by 0.9-3.4%, and for the Grom variety by 3.8-5.8% in comparison with the chemical dressing agent based on Tebuconazole. The increase in winter hardiness of the Kalym variety was 3.3-5.0%. Productive bushiness increased by 8-24% for the Grom variety and by 6-21% for the Kalym variety. It was revealed that the maximum weight of 1000 grains per spike was when the seeds were treated with the VKM-V-2605D strain. In general, the greatest influence on the productivity of winter wheat was exerted by seed dressing with the Bacillus subtilis VKM-V-2605D strain - the grain yield of the Grom variety increased by 1.27 t / ha, the Kalym variety - by 2.16 t / ha, the profitability of grain production reached 119- 187%.