Results of an experiment on the use of bioproducts for soybean cultivation under the conditions of Primorsky kray

Abstract

The paper presents the results of a study on the influence of bioproducts on soybean plants under the conditions of Primorsky kray. The research was carried out as a microplot experiment in 2020-2022. Bioproducts and soybean variety Primorskaya 86 served as the research object. The highest biological efficacy against Septoria blight (21.4%) was detected in the variant with a complex treatment with bioproduct Gamair. All of the studied bioproducts were equally effective against downy mildew (32 %). The bioproducts increased plant density and preservation until harvest. The highest plant density was observed in the variant with seed treatment and foliage spraying with Baktofit (60.3 plants/m2). The highest degree of preservation was detected after seed treatment with Biocomposite-correct (93.2 plants/m2). The plant height in the experimental variants exceeded the standard by 9.3-16.8 cm. A tendency for the growth of soybean herbage and roots was observed in the variant with a complex treament with Biocomposite-correct, which exceeded the control by 29.4 and 28.9%, respectively. The TKW increased by 10.1-26.0 % after treatment with the studied bioproducts. The seed weight per plant was by 10.5-51.1% higher in the experimental variants than in the control. Using the bioproducts allowed a significant gain in yield from 0.4 to 1.3 t/ha. The highest yield (3.8 t/ha) was observed in the variants with the treatment of seeds with Biocomposite-correct and the seed treatment with any bioproduct followed by subsequent spraying of foliage during the growing period with the same bioproduct.

Role of bioproducts in the improvement of soybean productivity

“…They account for 80% of all soybean fields in the country. Soybean is one of the main economically important agricultural crops in Primorsky kray as well [1].…”