WINTER HARDINESS AND YIELD OF WINTER DURUM WHEAT VARIETIES DEPENDING ON TREATMENT OF SEEDS AND FOLIAR FEEDING OF PLANTS IN THE CONDITIONS OF THE VORONEZH REGION
In the conditions of the forest steppe of the Voronezh region the authors studied the effects of preseeding treatment of seeds with the formulations Plodorodie Sibiri, Avibif, Albite, Rexolin ABC and Vitazyme on two winter durum wheat varieties (Zolotko and Donchanka), particularly on overwintering of plants, and the efficiency of separate and combined action of these formulations on crop yield in case of foliar feeding. Experiments were conducted on the plots of Voronezh State Agrarian University in 2012/13-2013/14. The highest field germination was observed after treating the seeds with Albite formulation (Zolotko variety - 80.2%, Donchanka variety - 79.7%), while the best overwintering was observed after treating the seeds with Plodorodie Sibiri formulation (Zolotko variety - 89.2%, Donchanka variety - 80.5%). Zolotko variety showed good overwintering and higher yield (32.2 c/hectare). Higher yield was obtained after treating the seeds with Albite (Zolotko variety - 32.0 c/hectare, Donchanka variety - 26.3 c/hectare), Plodorodie Sibiri (29.2 and 26.9 c/hectare, respectively), and Vitazyme (29.4 and 25.3 c/hectare, respectively). Foliar feeding with the formulations under study was effective to various extents, especially in case of a synergetic effect when treating both seeds and plants. Zolotko variety was more responsive to the preseeding treatment of seeds with the formulations under study, while Donchanka variety was more responsive to foliar feeding.