What question did this study set out to answer?

To evaluate the effectiveness of nitrogen fertilizers and the nitrification inhibitor DMPP on spring wheat cultivation.

June 17, 2026

Yield of spring wheat under the application of nitrogen fertilizers containing a nitrification inhibitor

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Randomized trial assesses nitrogen fertilizers' effects on spring wheat yield, indicating enhanced growth with inhibitors.

To evaluate the effectiveness of nitrogen fertilizers and the nitrification inhibitor DMPP on spring wheat cultivation.
Conducted a small-plot field experiment using urea and ammonium nitrate at 90 kg N ha-1, with and without DMPP.
Assessed plant height, yield components, grain protein, and nitrogen use efficiency (NUE).
Utilized sod-podzolic light loam soil in the Central Non-Chernozem zone of the Russian Federation.
DMPP increased grain yield by 19-21% compared to conventional nitrogen fertilizers with an average of 5 more grains per ear.
Yield components improved significantly: plant height increased by 10 cm, ear length by 1 cm, and 1000-grain weight by 2.9 g.
Grain protein content rose from 13.6% to 14.1%, while gluten content increased from 19.2% to 30.6-33.4%, with NUE rising from 55 to 86.

Lapushkin et al. (2026) studied this question.

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