Nitrous Oxide

Current research programme

The current focus of the NZAGRC’s nitrous oxide (N2O) research programme is on measuring the effects pasture plants and pasture plant communities have on nitrous oxide emissions.

This work is closely aligned to the MBIE P21 and Forages for Nitrate Leaching programmes (FRNL). In addition, an investigative project on a technology to locate and treat urine patches was completed in 2015/16.

Learn more about:

Principal investigators

Dr Cecile de Klein, AgResearch
Professor Hong Di, Lincoln University

Research Stories

Mitigating nitrous oxide and manure-derived methane emissions by removing cows in response to wet soil conditions

T.J. van der Weerden, S. Laurenson, I. Vogeler, P.C. Beukes, S.M. Thomas, R.M. Rees, C.F.E. Topp, G. Lanigan, C.A.M. de Klein, Mitigating nitrous oxide and manure-derived methane emissions by removing cows in response to wet soil conditions, Agricultural Systems, Volume 156, September 2017, Pages 126-138, ISSN 0308-521X, https://doi.org/10.1016/j.agsy.2017.06.010.

Highlights

• Grazing pastures when soils are wet increases N2O emissions from cow urine

• Duration controlled grazing (DCG) was applied when a soil ϴv threshold was reached.

• Different durations were assessed for farms on poorly and imperfectly drained soils.

• For poorly drained soils, DCG reduced N2O and manure-derived CH4 emissions.

• For imperfectly drained soils, DCG increased N2O and manure-derived CH4 emissions.

Read the article in full (external link)

 


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