Influence of growth regulators on yield, oil content and oil yield of sunflower variety Chakinsky 77 in environments of Tambov region

Influence of growth regulators on quantitative and qualitative traits of a new early variety of sunflower Chakinsky 77 of breeding of FGBNU “Tambov NIISH” was studied in field trials on typical chernozem in 2013-2014. The results of the researches prove that application of the growth regulators promote both an increase of productivity up to 0.14- 0.39 t/ha in comparison with a control, and improvement of sunflower seeds quality. The maximal yield of seeds was in variant with seeds and plants treatment by Epin - 1.89 t/ha. Oil content of seeds invariants of the trial increased up to 0.9-7.1%. The highest oil content for two years was in variant with application of Intermag Profi (treatment of plants) - 51.0%. Oil yield both in 2013 and 2014 in all variants of trial, except Mival Agro (treatment of seeds and plants) had a significant increase, compared to control - up to 0.22-0.29 and 0.13-0.16 t/ha, respectively. In average for two years of research, a maximal, almost similar oil yields were received in the variants with application of Epin (treatment of seeds and plants) and Intermag Profi (treatment of plants), - 0.94 and 0.95 t/ha, respectively.