EFFECT OF SOME METHODS ON WINTER BARLEY YIELD INCREASE AND GRAIN QUALITY
The cultivation of winter barley and the production of high yield units are associated with the complex of agronomic practices of which weed control plays a special role in improving the crop productivity. The experiment was conducted in 2015 and 2016 on leached pebbled chernozem on the base of North Caucasian Research Institute of Mountain and Foothill Agriculture (village Mikhaylovskoye, North Ossetia-Alania). The research objects were promising varieties of winter barley: Victoria; Golozerny; Zolotisty. Integrated fertilizing (N36Р36К36) + (N35) + (N35) and herbicide Secator - Turbo (0,1 l/ha) helped to increase yield units of all studied varieties. Low grain yield was observed in all varieties when fertilizing without crops treatment with the herbicide (Zolotisty - 2,78 t, Victoria - 2,61 t and Golozerny - 3,05 t/ha). The highest productivity was observed when double crops treatment with the herbicide (in stages of tillering and plants stem elongation) - (Zolotisty - 5,58 t, Victoria - 6,03 t and Golozerny - 5,01 t). The quality grain characteristics were evaluated. It was found that the highest content of macro and microelements was on the background of fertilizers with herbicide application which constituted by protein - variety Victoria - 9,7%, variety Golozerny - 9,4%, variety Zolotisty - 10,6%; by nitrogen - Zolotisty - 2,0%, Golozerny and 1,6%, Victoria - 1,9%, by copper - Zolotisty - 4,8 mg/kg, Victoria - 6,0 mg/kg, Golozerny - 5,4 mg/kg, etc. The obtained data were compared and did not exceed maximum permissible concentration (MPC) that allows to use grain for food purposes and for industry.