Nitrous oxide emission levels in response to alternative crop rotations

2014
CC BY 4.0

Research organisatons
Funding source

Trial details

Researcher(s) Brian Dzoma (SARDI)
Roy Latta (SARDI)
Year(s) 2014
Contributor Eyre Peninsula Agricultural Research Foundation
Trial location(s) Minnipa Agricultural Centre, SA
Wanilla, SA
Nitrous oxide emission levels in response to alternative crop rotations locations
Aims

To measure and quantify N2O emissions from wheat grown in rotation with canola, pulses and legume pastures at two sites in low and medium/high rainfall farming systems of the Eyre Peninsula, while assessing best management practices that local farmers can adopt to reduce the risk of N2O losses and ultimately improve the paddock’s crop productivity and gross margin.

Key messages

• Work conducted in low and medium rainfall environments indicate that N2O emissions are low from an overall national perspective. • Results showed that there was no clear response of N2O emissions to nitrogen applied at sowing and post sowing. • High pre-seeding soil mineral nitrogen raises the possibility of higher N2O losses over the fallow period following significant rainfall.

Lead research organisation Eyre Peninsula Agricultural Research Foundation
Host research organisation SARDI Minnipa Agricultural Centre
Trial funding source DAWR AOTGR1- 035,AOTGR1-222
Related program Carbon Farming Initiative
Acknowledgments

Minnipa Agricultural Centre and David Giddings for the use of their land. Terry Blacker and Ian Richter for their technical support. This project is supported by funding from the Australian Government Department of Agriculture, - Action on the Ground program. A component of a BCG lead project.


Other trial partners Birchip Cropping Group (BCG); Ag Excellence Alliance; Eyre Peninsula Natural Resources Management (EPNRM)
Download the trial report to view additional trial information

Method

Crop type Wheat
Treatment type(s)
  • Crop: Type
  • Fertiliser: Rate
  • Fertiliser: Timing
Trial type
Trial design

Minnipa Agricultural Centre 2014

Sow date 12 May 2014
Harvest date 5 November 2014
Plot size 10m x 3m
Plot replication 3
Fertiliser

18:20:00:0 @ 50kg/ha

Wanilla 2014

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser Not specified
Download the trial report to view additional method/treatment information

Download results

Trial results MAC

# Variety
Treatment 1
Screenings (%) Gross income ($/ha) Grain N yield (kgN/ha) Protein (%) Grain yield (t/ha) Cost ($/ha)
1 Wheat:Mace Medic 2013 1.6 717 49.4 9.7 2.9 239
2 Wheat:Mace Canola low input 2013 0.7 648 44.5 9.6 2.6 234
3 Wheat:Mace Field pea 2013 0.9 655 44.9 9.7 2.7 234
4 Wheat:Mace Canola high input 2013 1.1 682 50.3 10.3 2.8 266

Grain yield t/ha


Loading

Cost $/ha


Loading

Grain N yield kgN/ha


Loading

Gross income $/ha


Loading

Protein %


Loading

Screenings %


Loading

Trial results Wanilla

# Variety
Treatment 1
Screenings (%) Gross income ($/ha) Grain N yield (kgN/ha) Protein (%) Grain yield (t/ha) Cost ($/ha)
1 Wheat:Mace Medic 2013 1.6 717 49.4 9.7 2.9 239
2 Wheat:Mace Canola low input 2013 0.7 648 44.5 9.6 2.6 234
3 Wheat:Mace Field pea 2013 0.9 655 44.9 9.7 2.7 234
4 Wheat:Mace Canola high input 2013 1.1 682 50.3 10.3 2.8 266

Grain yield t/ha


Loading

Cost $/ha


Loading

Grain N yield kgN/ha


Loading

Gross income $/ha


Loading

Protein %


Loading

Screenings %


Loading
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Minnipa Agricultural Centre, SA Calcareous red sandy loam
Wanilla, SA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Minnipa Agricultural Centre, SA Calcarosol
Wanilla, SA Sodosol
Soil Moisture Source: BOM/ANU
Average amount of water stored in the soil profile during the year, estimated by the OzWALD model-data fusion system.
Year Minnipa Agricultural Centre SA Wanilla SA
2014 375.1mm543.3mm
2013 309.1mm532.5mm
2012 341.1mm537.0mm
2011 384.6mm550.2mm
2010 373.1mm557.5mm
2009 382.1mm535.5mm
2008 300.4mm504.2mm
2007 302.9mm506.0mm
2006 341.2mm536.8mm
2005 307.8mm549.1mm
2004 299.0mm536.9mm
2003 308.0mm558.0mm
2002 309.5mm537.2mm
2001 351.3mm550.6mm
2000 354.3mm529.1mm
National soil grid Source: CSIRO/TERN
NOTE: National Soil Grid data is aggregated information for background information on the wider area
Actual soil values can vary significantly in a small area and the trial soil tests are the most relevant data where available

Soil properties

Loading

Climate

Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

Minnipa Agricultural Centre SA

Wanilla SA

Minnipa Agricultural Centre SA

Loading
Loading
Loading

Wanilla SA

Loading
Loading
Loading

Some data on this site is sourced from the Bureau of Meteorology

SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.



Trial last modified: 09-12-2019 09:29am AEST