Formation of economic characters of soybean seed productivity depending on cultivation conditions

In 2012-2013 to study the influence of cultivation conditions on formation of economic characters of 83 modern soybean varieties and their adaptive possibilities the investigations were carried out under conditions of the eastern part of forest-steppe zone of Ukraine and against the artificial provocative background (rain out shelter). Depending on the level of productivity tested varieties were divided into four clusters by the method of k-averages. In both years of the investigation against the artificial dry ground and under field conditions in 2013 the first, the most productive, cluster included the varieties Gali, Sonyachna, Sprint (UKR). The soybean varieties F 50 R/W, Labrador (FRA), Donskaya (molochnaya) (RUS), Bayka, Feya, Spritna, Arkadia, Odeska (UKR), UIR 21752 (CHN) should be referred to labile one; with the change of the type of production formation they remain highly productive.