EFFECT OF THE GROWTH STIMULATORS TOGETHER WITH THE SEED DISINFECTANTS ON THE PRODUCTIVITY OF THE SPRING BARLEY VARIETY ‘SHCHEDRY’

Nowadays one of the promising measures to increase the productivity of spring barley is to use seed disinfectants together with the growth stimulators, which stimulate plant sprouting, improve their tolerance to unfavourable biotic and abiotic factors and improve grain quality. The article considers the effect of tank mixtures of the disinfectants ‘Vintsit Forte’ with the growth stimulators ‘Agropon S’ and ‘Melafen’ on the productivity and the elements of structure of spring barley variety ‘Shchedry’. The use of tank mixtures of the growth stimulators ‘Agropon S’ and ‘Melafen’ during the seed disinfection with the fungicide ‘Vintsit Forte’ positively affects on the formation of such elements of yield as productive tillering and productive thick stand, that significantly raises the crop productivity. The greatest productivity increase of spring barley has been obtained in the variants with the disinfectant ‘Vintsit Forte’ in the tank mixture with the growth stimulator ‘Melafen’ due to the enhancing of the morphogenetic processes. The crop productivity was raised to 1.4 t/ha (29.8%) to the control when applying ‘Melafen’; the energy content in the yield was 100.4 GJ/ha with the least energy consumption of 2.6 GJ/t and the coefficient of energy efficiency of 6.4. The article considers the economic efficiency of seedbed treatment of seeds with the growth stimulators and seed disinfectants. The most economic effect (16.700 rubles/ha) has been received in the variant of ‘Vintsit Forte’+‘Melafen’ and showed 99.4% of production profitability. The study results are recommended for spring barley growing by the farmers in the Rostov region.