Nitrous oxide research
Nitrous oxide research undertaken through the Climate Change Research Program identified opportunities to reduce emissions from a range of different locations and production systems, including sugarcane, cropping, dairy pasture and cotton.
Some key findings
- Fertiliser managed in conjunction with irrigation has potential to reduce nitrous oxide emissions and increase nitrogen use efficiency.
- Matching soil nitrogen supply to crop demand and avoiding large single applications of nitrogen fertiliser may reduce nitrous oxide emissions and total fertiliser use while maintaining levels of production.
- Nitrification inhibitors reduced emissions of nitrous oxide substantially (by 35–75 per cent) in a range of systems, including dairy pastures in southwest Victoria and irrigated cereal production in southern Queensland.
- Simulations using DayCent, a key carbon and nitrogen cycling model, were consistent with observed emissions. This provides confidence with this type of model for estimating emissions in future Carbon Farming Initiative methodologies.
A technical summary highlighting the key findings on nitrous oxide research through the Climate Change Research Program is provided below:
- Nitrous Oxide Research Program summary PDF [1.3MB]
- Nitrous Oxide Research Program summary Word [2.1MB]
Fact sheets, case studies and DVD’s providing an overview the Climate Change Research Program and a summary of the research outcomes and are available.