World Journal of Agriculture and Soil Science

On the meadow-chestnut soil of heavy mechanical composition we studied the productivity of promising varieties of winter durum wheat Grain, de-pending on the doses and timing of mineral fertilizers on the background of irrigation and semi-steam systems of soil treatment in irrigation of the flat zone of Dagestan. The purpose of the research was to obtain experimental data for the development of cost-effective and environmentally friendly resource-saving technology of cultivation of promising varieties of winter durum wheat Grain in the flat zone of Dagestan. The novelty of the research is that for the first time in the conditions of irrigation of the flat zone of Dagestan, the optimal doses of mineral fertilizers and the terms of their application for winter durum wheat, providing a significant in-crease in yield and grain quality were studied and established. On average, for 2014-2018 the maximum yield of the promising Grain variety-5.45 t/ha, on aver-age for 2014-2018, was achieved in the variant of applying an increased dose of mineral fertilizers (N₁₈₀P₁₀₀). Application of half dose of mineral fertilizers (N₉₀P₅₀) contributed to a decrease in grain yield with the same semi-steam tillage system by 0.48 t/ha, or 8.8%. In the variants of the irrigation half-pair, when applying an increased dose of mineral fertilizers, the grain yield was lower compared to the half-steam system by 0.46 t/ha, or 8.4%.

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