DOI: 10.32900/2312-8402-2023-130-146-156

Marenich M. M.,
Doctor of Agricultural Sciences, Professor,
Karasenko V.,
PhD Student,
Poltava State Agrarian University

Keywords: wheat, nitrogen, inhibitors, nutrients, productivity, humic preparations

The relevance of the use of nitrogen inhibitors is determined by three main aspects, namely, reducing the amount of nitrogen fertilizers and, therefore, the chemical load on the environment, increasing the yield of agricultural crops, and economic feasibility. There is some information about the positive effect of the combined use of a nitrogen inhibitor and fulvic acid preparations, but there is no data on the role of humic substances such as nitrogen inhibitors. The results of the research showed a significant impact of the use of humic preparations on the formation of the yield of winter wheat. The use of UltraBoost for seed for pre-sowing treatment in the amount of 1 kg/t of seeds contributed to an increase in productivity by 0.22–0.29 t/ha, which was 4.4–6.4%. The norm of 1 kg/ha ensured a statistically significant increase in yield by 5–7.9%, which was 0.23–0.4 t/ha. In the variants of the experiment with a rate of 3 l/ha, the increase was 8.8–11% or 0.38–0.51 t/ha. The use of UltraBoost for NH3 and pre-sowing seed treatment contributed to an increase in yield by 7.1–7.5%. The rate of UltraBoost for NH3 of 1 l/ha provided an increase in yield by 0.25–0.4 t/ha, which in relative terms amounted to 3.9–7%. Twice as much rate led to an increase in productivity by 0.31–0.69 t/ha or by 10.4%. The use of nitrogen inhibitor UltraBoost for NH3 leads to an increase in the content of total nitrogen in the soil. In the variants with the application of 1 l/ha, an increase in the content was noted on average by 2.06 g/m3, which was 14.3%, and in the case of application of 2 kg/ha, the content of total nitrogen in the soil was higher on average by 3.28%, which was 22.7%. The rate of alkaline hydrolyzed nitrogen in these variants was higher by 3.5–8.8%. In variants with a rate of 1 l/ha of UltraBoost for NH3, the content of total nitrogen increased by 11.5%, and on variants with a rate of 3 l/ha – by 12.7%. The similar trend was also noted for the content of alkaline hydrolyzed nitrogen as the increase was 13.4 and 14.1%, respectively.


Abalos, D., Jeffery, S., Sanz-Cobena, A., Guardia, G., & Vallejo, A. (2014). Meta-analysis of the effect of urease and nitrification inhibitors on crop productivity and nitrogen use efficiency. Agriculture, Ecosystems & Environment189, 136-144.https://doi.org/10.1016/j.agee.2014.03.036.

An, H., Owens, J., Stoeckli, J., Hao, X., Beres, B., & Li, Y. (2020). Nitrous oxide emissions following split fertilizer application on winter wheat grown on Mollisols of Southern Alberta, Canada. Geoderma Regional, 21, e00272.https://doi.org/10.1016/j.geodrs.2020.e00272.

Bronson, K. F., Touchton, J. T., Hauck, R. D., & Kelley, K. R. (1991). Nitrogen‐15 recovery in winter wheat as affected by application timing and dicyandiamide. Soil Science Society of America Journal, 55(1), 130-135. https://doi.org/10.2136/sssaj1991.03615995005500010023x.

Dawar, K., Fahad, S., Jahangir, M. M. R., Munir, I., Alam, S. S., Khan, S. A., & Danish, S. (2021). Biochar and urease inhibitor mitigate NH3 and N2O emissions and improve wheat yield in a urea fertilized alkaline soil. Scientific reports11(1), 17413. https://doi.org/10.1038/s41598-021-96771-0.

Ehsanpour, F., Kiani, S., &Hosseinpuor, A. (2013). Effects of nitrification inhibitor 3, 4-dimethylpyrazole phosphate (DMPP) and phosphorus (P) on the yield and P use efficiency of wheat. Water and Soil26(6), 1473-1482.10.22067/JSW.V0I0.19284.

Elsaka, M. S., & AboElsoud, H. (2019). Impact of fulvic acid and nitrification inhibitor on wheat production and NO3-N losses in clay soil.Environment, Biodiversity and Soil Security, 3(2019), 241-254.  http://dx.doi.org/10.21608/jenvbs.2019.19806.1074.

He, T., Liu, D., Yuan, J., Luo, J., Lindsey, S., Bolan, N., & Ding, W. (2018). Effects of application of inhibitors and biochar to fertilizer on gaseous nitrogen emissions from an intensively managed wheat field. Science of the Total Environment628, 121-130.https://doi.org/10.1016/j.scitotenv.2018.02.048.

Hu, Y., Schraml, M., Von Tucher, S., Li, F., &Schmidhalter, U. (2014). Influence of nitrification inhibitors on yields of arable crops: A meta-analysis of recent studies in Germany. International Journal of Plant Production8(1), 33-50.

Huber, D. M., Warren, H. L., Nelson, D. W., Tsai, C. Y., &Shaner, G. E. (1980). Response of Winter Wheat to Inhibiting Nitrification of Fall‐Applied Nitrogen 1. Agronomy Journal72(4), 632-637.https://doi.org/10.2134/agronj1980.00021962007200040015x.

Huerfano, X., Fuertes-Mendizabal, T., Fernandez-Diez, K., Estavillo, J. M., Gonzalez-Murua, C., & Menendez, S. (2016). The new nitrification inhibitor 3, 4-dimethylpyrazole succinic (DMPSA) as an alternative to DMPP for reducing N2O emissions from wheat crops under humid Mediterranean conditions. European Journal of Agronomy80, 78-87.https://doi.org/10.1016/j.eja.2016.07.001.

Kiani, S., Hosseinpur, A. R., &Iranipour, R. (2014). Effects of Nitrification Inhibitor 3, 4-Dimethylpyrazole Phosphate on the Yield and Nitrogen Use Efficiency of Wheat. Applied Field Crops Research27(103), 158-166.https://doi.org/10.22092/aj.2014.101217

Kong, D., Jin, Y., Chen, J., Yu, K., Zheng, Y., Wu, S., & Zou, J. (2021). Nitrogen use efficiency exhibits a trade-off relationship with soil N2O and NO emissions from wheat-rice rotations receiving manure substitution. Geoderma403, 115374.https://doi.org/10.1016/j.geoderma.2021.115374.

Li, Q., Yang, A., Wang, Z., Roelcke, M., Chen, X., Zhang, F., & Liu, X. (2015). Effect of a new urease inhibitor on ammonia volatilization and nitrogen utilization in wheat in north and northwest China. Field Crops Research, 175, 96-105.https://doi.org/10.1016/j.fcr.2015.02.005.

LiYC, P., MaSY, G., Lin, E. D., & Han, X. (2015). Effects of different nitrogen fertilizer management practices on wheat yield sand N2O emissions from wheat fieldsin North China. Journalof Integrative Agriculture, 14(6), 1184-1191. https://doi.org/10.1016/S2095-3119(14)60867-4.

McKenzie, R. H., Middleton, A. B., Pfiffner, P. G., & Bremer, E. (2010). Evaluation of polymer‐coated urea and urease inhibitor for winter wheat in southern Alberta. Agronomy Journal, 102(4), 1210-1216. https://doi.org/10.2134/agronj2009.0194.

Mirkhani, R., Sajad Ghavami, M., Ahmadi, E., &Moghiseh, E. (2021, April). Influence of nitrification inhibitor (Nitrapyrin) on winter wheat yield. In EGU General Assembly Conference Abstracts (pp. EGU21-9684). https://ui.adsabs.harvard.edu/link_gateway/2021EGUGA..23.9684M/doi:10.5194/egusphere-egu21-9684.

Mohammed, Y. A., Chen, C., & Jensen, T. (2016). Urease and nitrification inhibitors impact on winter wheat fertilizer timing, yield, and protein content. Agronomy Journal108(2), 905-912.https://doi.org/10.2134/agronj2015.0391.

Owens, J. L., Wang, Z., Hao, X., Hall, L. M., Coles, K., Holzapfel, C., &Beres, B. L. (2022, March). Winter wheat response to enchanced efficiency fertilizers in the Canadian Prairies. In Great Plains Soil Fertility ConferencE (p. 104).

Owens, J., An, H., Beres, B., Mohr, R., &Hao, X. (2019). The effects of split application of enhanced efficiency fertilizers on non-winter nitrous oxide emissions from winter wheat. Canadian Journal of Soil Science, 100(1), 26-43. https://doi.org/10.2136/sssaj1991.03615995005500010023x.

Polychronaki, E., Douma, C., Giourga, C., &Loumou, A. (2012). Assessing nitrogen fertilization strategies in winter wheat and cotton crops in northern Greece. Pedosphere, 22(5), 689-697. https://doi.org/10.1016/S1002-0160(12)60054-X.

Poškus, K., Zita, B., Staugaitis, G., &Aleknavičienė, L. (2021). Influence of urease inhibitor on mineral nitrogen content in soil and productivity of winter wheat. Mechanization in agriculture & Conserving of the resources, 67(3), 97-99. https://stumejournals.com/journals/am/2021/3/97.

Schlegel, A. J., Nelson, D. W., & Sommers, L. E. (1987). Use of urease inhibitors and urea fertilizers on winter wheat. Fertilizer research, 11, 97-111.

Wang, Y., Yang, J., Zhang, R., &Jia, Z. (2018). Synthesis of climate, soil factors, and nitrogen management practices affecting the responses of wheat productivity and nitrogen use efficiency to nitrogen fertilizer in China. Sustainability, 10(10), 3533.https://doi.org/10.3390/su10103533.