Description
3,4-Dimethylpyrazole (phosphate) (3,4-DMPP) is an inhibitor of nitrification deemed safe by extensive standard toxicology and ecotoxicology tests. When utilized on crops, 3,4-DMPP prevents nitrogen loss from soil, increases nitrogen use efficiency, and boosts crop yields. However, a meta-analysis found no influence of 3,4-DMPP on net crop yield, although it may boost yields in alkaline soil. 3,4-DMPP may be less effective in acidic soils and in the post-harvest period. DMPP interferes with ammonia monooxygenase from ammonia-oxidizing bacteria (AOB) and archaea (AOA) but may not directly affect AOB, AOA, and non-target populations.
Chemical Properties
Pale Beige Solid
Uses
A new nitrification inhibitor to be used on solid and in liquid fertilizers and slurry.
Uses
As a new nitrification inhibitor, 3,4-Dimethylpyrazole phosphate can be used on solid and in liquid fertilizers and slurry
Definition
ChEBI: 3,4-dimethyl-1H-pyrazole phosphate is a phosphate salt obtained by reacting 3,4-dimethyl-1H-pyrazole with one equivalent of phosphoric acid. It is a nitrification inhibitor and when used on crops, it prevents nitrogen loss from soil, increases nitrogen use efficiency, and boosts crop yields. It has a role as a nitrification inhibitor. It contains a 3,4-dimethyl-1H-pyrazole.
References
[1] W. ZERULLA. 3,4-Dimethylpyrazole phosphate (DMPP) – a new nitrification inhibitor for agriculture and horticulture[J]. Biology and Fertility of Soils, 2001, 34 1: 79-84. DOI:
10.1007/s003740100380[2] CHUNYAN LIU X Z Kai Wang. Effects of nitrification inhibitors (DCD and DMPP) on nitrous oxide emission, crop yield and nitrogen uptake in a wheat-maize cropping system[J]. Biogeosciences, 2013, 10 1: 2427-2437. DOI:
10.5194/bg-10-2427-2013[3] MING YANG. Efficiency of two nitrification inhibitors (dicyandiamide and 3, 4-dimethypyrazole phosphate) on soil nitrogen transformations and plant productivity: a meta-analysis[J]. Scientific Reports, 2016, 72 1. DOI:
10.1038/srep22075[4] XIUZHEN SHI. Effects of the Nitrification Inhibitor 3,4-Dimethylpyrazole Phosphate on Nitrification and Nitrifiers in Two Contrasting Agricultural Soils.[J]. Applied and Environmental Microbiology, 2016: 5236-5248. DOI:
10.1128/aem.01031-16[5] CLEMENS SCHEER. Nitrification inhibitors can increase post-harvest nitrous oxide emissions in an intensive vegetable production system.[J]. Scientific Reports, 2017: 43677. DOI:
10.1038/srep43677[6] XIANWANG KONG . 3,4-Dimethylpyrazole phosphate (DMPP) reduces activity of ammonia oxidizers without adverse effects on non-target soil microorganisms and functions[J]. Applied Soil Ecology, 2016, 105: Pages 67-75. DOI:
10.1016/j.apsoil.2016.03.018
