Nitrous oxide emissions in grain production systems: What is being lost and what is the cost?

De-Anne Ferrier1, Ashley Wallace2
1Birchip Cropping Group (BCG), 2Department of Economic Development, Jobs, Transport and Resources (DEDJTR)

Take home messages
• N2O losses appear to be minimal from dryland low to medium rainfall farming systems; peak emissions of only 4.0 gN2O-N/ha/day were measured following rainfall.
• N2O emissions from legume stubble over summer and with synthetic fertiliser applied in-crop were low.
• An increase in soil water was the major driver of N2O emissions.