Effect of biopreparations and herbicides use on the yield formation of a mid-ripening soybean variety under conditions of the Amur region

The eff of herbicides (Bison, Stratos Ultra) and the preparations of natural origin (Bio-Fish, BioAlgo) on the yield formation, sowing qualities and initial growth of the mid-ripening soybean variety Zhuravushka selected by the Federal Scientifi Center "All-Russian Scientifi Research Institute of Soybean" was studied. The studies were conducted in 2020 and 2021 in the experimental fi of the All-Russian Scientifi Research Institute of Soybean located in the southern part of the Amur Region (Sadovoye village, Tambovsky District). It was found that an average of two years of application of the preparations of natural origin Bio-Fish and Bio-Algo for pre-sowing treatment of seeds and vegetative plants increased the safety of the plants to the harvest period and crop yield, as well as improved the seed quality. The greatest preservation to harvesting was observed when the seeds were treated before sowing with Bio-Fish and the vegetative plants with herbicides (93.9%, which is 6.4% more than in the control variant and 7.8% more than in the variant where only herbicide treatment was used). Analysis of the yield structure showed that, on average over the years of research, pre-treatment of seeds with Bio-Fish and the vegetative plants with herbicides Bison, Stratos Ultra increased the number of beans to 5.8 pieces, and the seeds to 12.9 pieces per plant compared to the control variant. Seed weight per plant increased to 2.47 g relative to the control. The use of biological preparations increased the biological yield regardless of the treatment variant by 0.64 t/ha compared to the control and by 0.66 t/ha compared to the herbicide treatment.

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