Combined use of biopreparations and growth regulators to improve soybean and tomato yields
https://doi.org/10.26898/0370-8799-2021-5-2
Abstract
The results of research on the effect of crop protection agents on tomato and soybean crops under Primorye conditions are presented. The study of preparations was carried out on zoned varieties of tomato Novichok and soybean Primorskaya 86. The effectiveness of different combinations of biological preparations based on Bacillus subtilis strains Bactophyt, Gamair and growth regulators Zircon, Mival-Agro was evaluated. The preparations were used for seed treatment and spraying of vegetative plants. Complex treatment with Bactofit provided a 3.9% reduction of septoriosis manifestation on tomato, the biological efficiency was 22.1%. Growth regulator Mival-Agro (seed and plant treatment) provided 36.8% effectiveness against late blight. The highest tomato yield was observed with the treatment of seeds and plants with Gamair (20.0 t/ha) with an increase of 4.9 t/ha compared to the control. The maximum efficiency (29.7%) against septoriosis on soybeans was recorded in the variant Gamair + Mival-Agro. The biological efficacy against peronosporosis ranged from 21% (Gamair complex treatment) to 25.4% (Bactofit + Mival-Agro). The application of all preparations had a positive effect on the growth and development of soybean plants. The largest increase in plant height in the phase of full ripeness was noted in the variant with the use of Bactofit and Mival-Agro (73.1 cm), in the control - 61.8 cm. Thousand-kernel weight increased with certainty by 13.5 – 22.0% in comparison with the control (176.2 g) after the usage of biopreparations and growth-regulating chemicals. High yield was achieved in the Bachtophit + Mival Agro variant (2.7 t/ha), in comparison the control was 1.8 t/ha, the addition amounted to 0.9 t/ha.
Keywords
About the Authors
O. V. Syrmolot
The Far Eastern Research Institute of Plant Protection – Branch of Federal Scientific Center of Agricultural Biotechnology of the Far East named after A. K.Chaiki
Russian Federation
Russian Federation
Oxana V. Syrmolot, Researcher
42а, Mira str, Kamen-Rybolov, Primorsky Territory, 692684
N. S. Kocheva
Federal Scientific Center of Agricultural Biotechnology of the Far East named after A. K.Chaiki
Russian Federation
Russian Federation
Nina S. Kocheva, Researcher
Ussyriysk, Primorsky Territory
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Review
For citations:
Syrmolot O.V., Kocheva N.S. Combined use of biopreparations and growth regulators to improve soybean and tomato yields. Siberian Herald of Agricultural Science. 2021;51(5):20-27. https://doi.org/10.26898/0370-8799-2021-5-2
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