Emission of Nitrous Oxide from Cracking Clay Soil Crops
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Nitrous oxide emissions from soils are strongly linked to rainfall and soil moisture levels. Higher emissions were observed from canola plots that received urea fertilizer compared to chickpea plots. Emission factors for N2O were around 0.3-0.8% of applied nitrogen for canola and 0.3% for chickpea. Including more pulse crops in rotations has the potential to reduce N2O emissions from broadacre farming by decreasing fertilizer use and increasing nitrogen use efficiency.
![Cracking Clay Soils Cropping in the northwest NSW grain-growing region covers up to 2.5 m ha. More than 70% of crops are grown on cracking clay soils ,[object Object],[object Object],[object Object],[object Object],Tamworth N 2 O trial site](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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Emission of Nitrous Oxide from Cracking Clay Soil Crops
- 1. Emission of nitrous oxide from a cracking clay soil Graeme Schwenke , David Herridge, Guy McMullen, Bruce Haigh, Kelly Baker
- 7. Air sample chambers in newly sown wheat and winter fallow plots
- 8. Gas chromatograph inside field lab
- 9. Air sample chambers in chickpea and canola
- 10. Air sample chambers in wheat and newly sown sorghum
- 12. Cumulative N 2 O emissions G. Schwenke, I&I NSW: unpublished data
- 16. Thank you