COMPETITIVENESS OF THE DOMESTIC SOYBEAN VARIETY EN ARGENTA COMPARED WITH THE CANADIAN BREEDING VARIETY OF OAK PRUDENCE IN THE CONDITIONS OF THE CENTRAL BLACK EARTH REGION

The paper analyzes the results of two-year experiments conducted in Shchigrovsky District of Kursk Region in the farm of LLC “Zashchitnoe-Sever”. The purpose of the research was to compare intensive, high–yielding varieties of indeterminate type of development Prudence OAK of Canadian breeding (University of Guelph, Canada) and of Russian breeding EN Argenta (The originator is EkoNiva-Seeds, Russia) and to identify the competitiveness of the domestic variety under the soil and climatic conditions of Central Chernozem Region. It was found that the yield of Prudence OAK was 90% dependent on the background of mineral nutrition and 6% on the method of sowing (row spacing and seeding rate). An increase in the background of nutrition from natural to medium and high on the average by the variants of the experiment significantly increased the yield by 4% and 11%, respectively. The change in the yield of the variety of Russian breeding EN Argenta 96% was due to the background of mineral nutrition and only 2% to the sowing method (row spacing and seeding rate). It was established that the variety of domestic breeding was more responsive to an increase in the level of mineral nutrition. When cultivated under the same conditions, the yield of the domestic variety was significantly higher than that of the Canadian variety by 0.29 t/ha (LSD05 0.8). With an increase in the level of mineral nutrition, the protein content in the two studied varieties increased, and the oil content decreased. The protein content was significantly higher in the EN Argenta variety, and the OAK Prudence variety was distinguished by a high oil content. High profitability of production was noted when cultivating soybeans with wide row seeding, regardless of the variety. As a result of the conducted research, it can be concluded that the priority place was taken by the Russian variety EN Argenta, which surpassed the Canadian variety in yield, protein content in grain and economic indicators. The Russian variety EN Argenta is competitive in relation to the Canadian variety OAK Prudence.