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

KuDos to Jiafa Luo of AgResearch

"Humbled and surprised” is how AgResearch Senior Scientist and NZAGRC Project Leader Dr Jiafa Luo describes his reaction to hearing his name read out as the winner of the Gallagher Agricultural Science Award at this year’s KuDos Hamilton Science Excellence Awards.

 

He says he didn’t think he would be the winner, as he was up against strong competition from the other finalist, LIC (Livestock Improvement Corporation), in the awards, which are held annually, celebrating Waikato scientists and their world-leading research and innovation. As well as agricultural science, the categories include environmental science, medical science, science educator and lab technician.

 

Jiafa is a key player in the New Zealand nitrous oxide research space and his work is having impacts both nationally and internationally. For the past 10 years Jiafa has been planning and leading many large-scale research programmes investigating country-specific nitrous oxide emission factors for deposited excreta in grazed pasture systems. His work has included investigations into nitrous oxide emissions from sheep, beef and dairy cow excreta on a range of soil types, land topographies and farming systems throughout New Zealand. Results from his work have directly impacted the NZ GHG inventory calculations, making them significantly more accurate.

 

Jiafa has also led several research projects investigating N2O emissions from applied nitrogen fertilisers and farm dairy effluents. The data from these projects is the first of this kind in New Zealand and has also been used as scientific evidence to support the country-specific N2O emission factors for nitrogen fertilisers and farm dairy effluent in grazed pasture systems.

 

Jiafa has led several research programme objectives examining mitigation technologies and practices for reducing N2O emissions from grazed pasture systems. The NZAGRC, GPLER and MPI funded programmes have tested and quantified the economic and environmental benefits from adopting N2O mitigation strategies (such as restricting grazing, nitrification inhibitors, novel plant species, and timing of dairy farm effluent and nitrogen fertiliser application) into New Zealand dairy farming systems. Results have been widely used by the pastoral sector and published in a number of refereed journal and conference papers.

 

Well done Jiafa!

 

See Jiafa in action here: https://youtu.be/FUuNppW0bL4


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