The effect of the nitrification inhibitor 3,4-dimethylpyrazolephosphate on the productivity of winter wheat when combined with KAS-32

Goal. To establish the expediency and effect of using nitrification inhibitor 3,4-dimethyl pyrazole phosphate (DMPF) in combination with urea-ammonia mixture (KAS-32) on yield winter wheat grain. determine difference different norms KAS-32 without addition DMPF. Methods. Field (stationary experiment); laboratory (agrochemical analysis soil plant samples); analytical (systematic long-term results field experiments meteorological observations mathematical statistical methods, correlation regression analysis, modeling, empirical generalization established patterns). Results. It was confirmed that use DMPF together significantly influenced wheat. At same rate KAS-32, 300 kg/ha variant DMPF, increased by 4.5 t/ha, or 12% compared to option where used at rate, In a reduced 250 an kg/ha, but 4.2 c/ha 11.2% over 4 years research (2018–2021). Conclusions. variants productivity control (without fertilizers) 25.3–25.6 t/ha (67.6–68.4%). 4.2–4.5 (11.2–12.0%) (2018–2021)).