Abstract
The main way to increase the yield of sunflower is to grow modern early-ripening varieties adapted to the soil conditions of the region for each region. In this scientific article, the main elements of the technology of cultivation of oil sunflower as a repeated crop of high-yielding early-ripening varieties have been developed. Sunflower was planted as a repeat crop after wheat, and when the planting schemes were used correctly, increased leaf area had a positive effect on yield. As the feeding area increased, the number of leaves increased and the highest value was observed in the planting scheme of 70x35–1. Dilbar variety of sunflower produced more leaves than all three cultivars in all planting schemes in terms of leaf number index due to its large leaves and high yield.
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