Abstract
The yield of winter wheat depends on the biological characteristics of the variety, soil climatic conditions, water, light, feeding regime and applied agro measures. In the cultivation of winter wheat, the external environmental factor or agrotechnology used has a strong impact on yield or grain quality. High and quality grain can be grown when cultivation technology is adapted to the biological characteristics of the varieties. The cultivation technology used is required to optimally meet the demand for its vital factors in the stages of winter wheat orinogenesis. We presented the results of scientific research conducted in Samarkand region on the establishment of primary sowing of intensive varieties of durum wheat “Istiqlol 25” and the development of agro-technical methods to improve the quality of Istiqlol 25. In the variant where 4.5 million germinated seeds were used, the positive result was shown when the fertilizer norms were NPK 180:135:90.
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