INFLUENCE OF DIFFERENT FACTORS ON SUNFLOWER PRODUCTIVITY

Abstract

The article highlights the influence of the timing of sowing sunflower varieties “Jahongir” and “Diyor” and the norms of mineral fertilizers on the amount of oil in seeds in light gray soils of the Kashkadarya region. When sowing sunflower seeds early (June 15-20) in the light gray soil conditions of the Kashkadarya region, the plants grow normally, the oil content of the Jahangir and Diyor varieties is high (up to 40.3-42.3%) compared to other periods. An increase in the rate of mineral fertilizers, especially nitrogen, by 120 kg/h leads to plant thirst, early ripening compared to other fertilizer rates and a decrease in oil content by 8-12 percent.