The effect of cultivation techniques on the productivity of the promising winter durum wheat variety “Krupinka” in Dagestan

There have been presented the study results of productivity of the new winter durum wheat variety “Krupinka” depending on the doses of mineral fertilizers against the background of irrigated bastard fallow and clover fallow systems of soil cultivation on meadow-chestnut soil of heavy texture under irrigation of the plain zone of Dagestan. The purpose of the study was to obtain experimental data for the development of an economically effective and environmentally friendly resource-saving technology for the cultivation of a promising winter durum wheat variety “Krupinka”. The urgency of the research was in the study and identification of optimal doses of mineral fertilizers and soil cultivation systems for winter durum wheat, providing a significant increase of yield and grain quality. The maximum productivity of the variety “Krupinka” 5.45 t/ha, on average for 2014-2018, was obtained when applying an increased dose of mineral fertilizers (N180P100) at a bastard fallow tillage. The application of a half dose of mineral fertilizers (N90P50) has decreased grain productivity at the same bastard fallow tillage on 0.48 t/ha, or 8.8%. In the variants of the irrigated bastard fallow, with the application of an increased dose of mineral fertilizers, the grain productivity was lower in comparison with the bastard fallow tillage on 0.46 t/ha, or 8.4%