Productivity and yield quality of sunflower cultivars and hybrids depending on the dose and time limits of applying fertilizers in the foothill zone of Kabardin-Balkar Republic.
Sunflower is the most important crop among the oilseed ones cultivated in Russia. It accounts for 75% of all seed-bearing crops and 80% of the produced oil [2]. The seeds of modern varieties and hybrids of sunflower contain up to 56% of light-yellow edible oil with good taste, as well as up to 16% of the protein [4]. The average yield of sunflower in the Russian Federation is about 1t/ga. The best farms are - 2-3 t \ ha. Potential yield - more than 5t/ga [1]. The main areas (80%) occupied by sunflower are located in the North Caucasus, Moldova, Rostov Region, central Russia, the Middle and Lower Volga. In small areas it is grown in Bashkortostan, Mordovia, Tatarstan, Chuvashia, in the Urals, Western Siberia [3].