Study

How does the application of different nitrification inhibitors affect nitrous oxide emissions and nitrate leaching from cow urine in grazed pastures?

  • Published source details Di H.J. & Cameron K.C. (2012) How does the application of different nitrification inhibitors affect nitrous oxide emissions and nitrate leaching from cow urine in grazed pastures? Soil Use and Management, 28, 54-61

Actions

This study is summarised as evidence for the following.

Action Category

Amend the soil with formulated chemical compounds

Action Link
Soil Fertility
  1. Amend the soil with formulated chemical compounds

    A replicated, controlled study in 2008 on sandy loam in New Zealand (Di & Cameron 2012), found that two nitrification inhibitors, dicyandiamide and 3,4-dimethylpyrazole phosphate (DMPP), were both effective at reducing nitrogen loss through nitrous oxide emissions and nitrate leaching. Adding dicyandiamide to pasture reduced nitrous oxide emissions by 62% and nitrate loss by 36%, while adding DMPP to pasture reduced nitrous oxide emissions by 66% and nitrate loss by 28%, compared to the control. The study used three treatments, replicated four times on pasture plots planted with a mixture of ryegrass Lolium perenne and white clover Trifolium repens. Treatments were control (cow urine, 1000 kg/ha), dicyandiamide (cow urine and dicyandiamide at 10 kg/ha) and DMPP (cow urine and DMPP at 1 kg/ha or 5 kg/ha). Treatments were applied in mid-winter and re-applied in early spring. Dicyandiamide and DMPP were both applied as liquid formulations.

     

Output references

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