Ecologo-geographic estimation of bio logical potential of early varieties in soya north advance

In the conditions of Leningradskaya oblast' (in latitude 59°44' North) and Krasnodarskii region (in latitude 45° 18' North) in field sowing the authors studied the parameters of development and productivity in 17 early variants of soya from collection of All-Russian Scientific Research Institute of Plant Growing (VIR) capable of forming the seeds during cultivation in northwest region of Russia. It was shown that seed productivity, plant height and height of lower bean in the conditions of Leningradskaya oblast' in most of variants were higher, the Fiskeby 840-5-3, Fiskeby 1040-4-2 and Mageva varieties have the greatest productivity.