Effect of nitrogen source and tillage on N2O Emissions. Wagga Wagga, New South Wales, 2012-2013 [Theme 1: Inhibitors for reducing emissions]

This project aims to reduce nitrous oxide emissions from dryland grains cropping in northern and southern NSW through improving the nitrogen use efficiency of applied nitrogenous fertiliser, through the use of inhibitors, and through substituting fertiliser nitrogen with legume-derived nitrogen. Measurements of nitrous oxide will be field based, primarily using automated chambers at two key trial sites, but also using manual chambers at on-farm N-response trial sites conducted as part of the GRDC nitrogen-responses project.

Field results will be modelled to improve the capability of predicting nitrous oxide emissions from dryland cropping. Project outputs will contribute to the development of CFI methodologies for more efficient nitrogen fertiliser use in the grains industry.