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FORMATION OF PHOTOSYNTHETIC PRODUCTIVITY OF SOYBEAN CROPS FOR THE USE OF DIFFERENT TYPES OF FUNGICIDES AND INOCULANTS IN THE RIGHT-BANK FOREST-STEPPE OF UKRAINE

Author(s) Mostov’yak I. I. , PhD of Agricultural Sciences, Docent, First Vice-Rector , Uman National University of Horticulture
, , , Uman National University of Horticulture
Category Crop production
year 2018 issue №2, 2018
pages 21-25 index UDK 581.132:[633.34:632.952:631.87(477.46)]
DOI 10.31395/2310-0478-2018-21-21-24 (Link)
Abstract The article presents the results of the research into photosynthetic activity of soy plantations under the application of various types of fungicides and inoculant Rhizoactive. The object of the research is soy plants of cultivar Anushka and microbial preparation Rhizoactive. Concentration of chlorophyll a and b was investigated at the phase of blossom ending and formation of beans using spectrophotometer according to the methods developed by Z.M. Hrytsaienko and co-authors. Parameters of net productivity of plantings photosynthesis were calculated according to the methods of A.O. Nechyporenko. It has been found out thatweather and agronomic conditionsas well as biologically active substances (different types of fungicides and microbial preparation) influence the productivity of photosynthetic processes in soy plants. It has been established that under application of fungicides Akanto Plus 28 KC, 1.0 l/ha, Amistar Extra 280 SC, KC, 0.75 l/ha, Bamper Super 490, KE, 1.5 l/ha, Impact K. 0.8l/ha, Koronet 300 SC, KC 0.8 l/ha against the background of inoculant Rhizoactive (2.0 kg/per 1 ton of seeds) the concentration of green pigments (chlorophylls a and b) increases considerably, which promotes the increase in the parameters of net productivity of photosynthesis. This is due to the fact that combined application of fungicides and inoculant has an optimal effect on soy plants: application of fungicides decreases the incidence of plants diseases and use of inoculant improves the level of mineral nutrition.
Key words soy, fungicide, inoculant, net productivity, photosynthesis, chlorophyll
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