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:

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.

Last reviewed: 4 November 2019
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