The document discusses a study looking at ways to reduce nitrous oxide emissions from animal agriculture systems. The study focuses on emissions from urine patches in dairy grazing systems and tests the effectiveness of applying dicyandiamide (DCD) to pastures both immediately after and one month prior to applying urine from grazing animals. The results showed DCD reduced nitrous oxide emissions by 35-45% regardless of when it was applied relative to urine application. DCD's impact on emissions was found to last at least 90 days when applied in late winter or autumn. Whole paddock dry matter production was minimally affected by DCD application.

1. Can we reduce nitrous oxide emissions from animal production systems? Kevin Kelly, Graeme Ward, Sally Officer, Tim Huggins, Richard Eckard

2. Agricultural soils - nitrous oxide emissions (DCCEE 2010)

5. Terang SW Victoria

6. Daily nitrous oxide flux and soil water

7. Daily nitrous oxide flux and soil water

8. Daily nitrous oxide flux and soil water

9. Daily nitrous oxide flux and soil water

10. Summary of nitrous oxide emissions

12. Effects of treatment on DM yields (10-15%) (10-20%) (30-120%) (2010) 3 of 6 3 of 6 5 of 6 Autumn (10%) (10-15%) (30-160%) (2009) 1 of 5 3 of 5 4 of 5 Late winter DCD + Urine (day 1 – day 28) Urine + DCD (day 1 – day 1) Urine

14. Acknowledgements