ECOLOGICAL ELASTICITY OF SOYBEAN VARIETIES’ PERFORMANCE ACCORDING TO CLIMATIC FACTORS IN UKRAINE

Abstract

This research aimed to determine the ecological elasticity of soybean varieties’ performance of different maturity groups in the Sumy, Ternopil, and Mykolaiv regions. In the course of the research, 10 fast-growing, 6 early-ripening, 4 middle-early, and 3 mid-ripening varieties of domestic and foreign selection were used. The results of the analysis of the obtained data show that the formation of varieties’ yield capacity is directly dependent on the length of the growing season, the amount of precipitation, and the temperatures. It was found that the highest level of yield capacity (2.75 t/ha on average) is formed by early-maturing soybean varieties, among which the Merlin variety is characterized by the highest yield - 3.08 t/ha.