Impact of sowing dates and fertilizer rates on yield and grain quality of intensive triticum durum wheat varieties in irrigated lands

The article analyzes the results of studies on the influence of the norms of mineral fertilizers on the growth, development, yield and quality of durum wheat varieties during autumn sowing. In the conditions of the irrigated lands of the Samarkand region, based on the biological characteristics of durum wheat, biologically autumn varieties when sown in the first decade of October and the rate of fertilizers N210P147K105, spring varieties in the second decade of October and the rate of fertilizers N180P126K90, ensure high yield and grain quality.