Strain testing of soybeans in subtaiga zone of Western Siberia

The researches on comparative assessment of soy varieties of Siberian selection in the Nonchernozyom zone of Western Siberia were conducted in 2004-2010 in subtaiga zone of Omsk Region on gray forest soils. The duration of vegeta- tive period (shoots - full ripeness) was influencedby the features of a variety and weather. On aver- age in 7 years of researches of the earliest, 95 days lasting vegetative period, there were varieties of SIBNIISKHOZ 6 and Dina in which vegetative period was 4 days shorter, than in control of SIBNIIK315. Soy variety Omsk 4 was the most late-ripening, with vegetative period of 102 days. Field viability of all varieties depended on the conditions for the peri- od "crops shoots" and on varieties for years of the researches it averaged 80.3-81.6 %. The safety of plants to harvesting also depended on weather conditions for vegetative period and averaged 88.0-89.1 %. The analysis of the elements of effi- ciency of plants of soy showed that bigger number of beans (10...