SOYBEANS SEED PRODUCTIVITY UNDER THE ACTION OF GROWTH STIMULATING DRUGS
Vdovenko Sergiy Anatolyevich – Doctor of Agricultural Sciences, Professor of the Department of Landscape Management, Forestry Horticulture and Viticulture of Vinnytsia National Agrarian University (21008, Vinnytsya, Soniachna St., 3 e-mail: email@example.com).
Shevchuk Victoria – postgraduate student of the Department of Agriculture, Soil Science and Agrochemistry of the Vinnytsia National Agrarian University (21008, Vinnytsia, Soniachna Str. 3 е-mail: Vvictoriya07@gmail.com).
Shevchuk Oksana – PhD of Biological Sciences, Associate Professor of department of of Biology, Vinnytsia State Pedagogical University named after Mikhail Kotsyubinsky (21001, Vinnitsa, Ostrozkogo St. 32. E-mail: firstname.lastname@example.org).
Dedov Alexander – PhD of Agricultural Sciences, Associate Professor of the Department of Geography, Vinnitsa State Pedagogical University named after Mikhail Kotsyubinsky (21001, Vinnytsia, Ostrovsky St., 32).
Biostimulants are the kind of "doping", due to which crops gain great vitality for crop formation. Growth stimulating drugs make a positive effect on the soil microflora, they are rapidly transformed by soil microorganisms, plant cells. The aim of the work was to substantiate scientifically the use of stimulating growth regulators – Epin-extra, Agorostimulin, Rival, and Kornevin, as the elements of soybean growing technology; to identify their effect on biological characteristics and seed productivity of the crop. The research was conducted on soybean variety Millennium. Pre-sowing experimental treatments of seeds were carried out with aqueous solutions of Epin-extra (0,025 g l), Agorostimulin (1 ml/l), Rival (1 ml/l) and Kornevin (0,5 g/l), and control – with water. During the study laboratory germination and energy of germination of seeds, and also morphometric indicators of seedlings and roots were defined. It was found that the pre-sowing treatment of soybean seeds of Millennium variety with stimulant drugs – Epin-extra (0,025 g/l), Agorostimulin (1 ml/l), Rival (1 ml/l) and Cornevin (0,5 g/l) increased seed productivity. In all variants of the experiment, both germination energy and seed germination were increased. It was found that the most effective drugs for the increase of germination energy and seed germination of Millennium soybeans are Epin-extra (0,025 g/l) and Agorostimulin (1 ml/l).
Under the action of plant growth stimulators, morphometric changes occurred in soybean seedlings. The drugs affected the length of the hypocotyls in seedlings of soybean culture. Under the use of Epin-extra (0,025 g/l) the length of hypocotyls increased by 18 %, under the action of Agorostimulin (1 ml/l) – by 32 %, under Cornevin (0,5 g/l) treatment - by 41 % and after the use of the drug Rival (1 ml/l) – by 85 %. Stimulators helped to lengthen the main root of soybean seedlings. The largest indicator of the length of the main root was found under the treatment of such drugs Riaval and Agorostimulin. It was found that all studied drugs contributed to the regrowth of lateral roots in soybean seedlings, but the best effect was observed under the usage of the drug Cornevin (0,5 g/l).
The significant increase in the dry weight of Millennium soybean seedlings was revealed with the use of stimulating plant growth regulators. The increase of the dry weight of soybean seedlings was detected under the pre-sowing treatment of seeds with Cornevin (by 36 %), Agrostimulin (by 50 %), and Rival (by 88 %) in comparison to the control. Pre-sowing treatment of soybean seeds leads to the increase of dry weight of roots. The best effect on the increase of dry weight of roots was found under the use of drugs Cornevin and Agrostimulin. The use of Epin-extra and Rival also led to a positive result, but not as significant as after the use of two previous drugs that were given above.
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Scientific journal "AGRICULTURE AND FORESTRY" was founded in 1995; it was entitled as Bulletin of Vinnytsya State Agricultural Institute.
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According to the order of the Ministry of Education and Science of Ukraine from 17.03.2020 № 409. Journal of Agriculture and Forestry is included in the List of scientific professional publications of Ukraine Category "B" in agricultural sciences (specialties) - 101, 201, 202, 203, 205, 206.