Complaint
SPECIFICATION
DMPP (3,4- dimethylpyrazole phosphate): A nitrification inhibitor that is efficient, safe, nontoxic, and it is also environmental and less cost in the world. The effective period of ammonium nitrogen fertilizer can be extended from 25 days to more than 50 days, and the utilization rate can be increased from 30% to more than 40%.
| Item | Specification |
| Appearance | White to yellow-white crystalline solids |
| Assay | 98%min |
| Lossing on dry | 1% max |
Nitrification in Soil
Nitrification is a natural process in soils that converts ammonium to nitrite and then to nitrate. The soil bacteria Nitrosomonasspp. extract energy from ammonium by converting it to nitrite. A second group of bacteria, Nitrobacter spp. then convert nitrite to nitrate. Both types of bacteria are common in soil and it is the first reaction that limits the overall rate of nitrate production. With moderate temperature and soil water content nitrification occurs on most soils within a few days or weeks after application of ammonium sources. The ammonium can come from urine,manures,composts,decomposing crop residues, or fertilizer containing ammonium or urea.
Regulating Nitrification
Nitrification inhibitors are compounds that delay nitrate production by depressing the activity of Nitrosomonas bacteria. The rate of nitrification can be controlled by preserving N as ammonium, which can be held on soil colloids rather than leached.
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