Managing stubble and nutrition to increase soil carbon

2012 - 2013
CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Peter Hooper (Hart Field Site Group)
Sarah Noack (Hart Field Site Group)
Year(s) 2012 - 2013
Contributor Hart Field Site Group
Trial location(s) Hart, SA
Managing stubble and nutrition to increase soil carbon locations
Aims

To add normal and higher amounts of nutrients (N, P and S) to different stubble managements (standing, worked and removed) to see if soil humus level would be increased.

Key messages
  • The addition of extra nutrients did not increase yield, therefore it is expected that more nitrogen, phosphorus and sulphur remained in soil to breakdown stubble.
  • Tillage practices (removed, worked or standing) also have no effect on grain yield or quality in both years of trials.
Lead research organisation Hart Field Site Group
Host research organisation Hart Field Site Group
Trial funding source Department of Agriculture
Related program N/A
Acknowledgments

This trial was funded by the Australian Government Department of Agriculture (formerly DAFF) and conducted in collaboration with Harm van Rees, Crop Facts and Ag Excellence Alliance.


Other trial partners Cropfacts and Ag Excellence Alliance
Download the trial report to view additional trial information

Method

Crop types Cereal (Grain): Wheat Cereal (Grain): Barley
Treatment type(s)
  • Fertiliser: Application Method
  • Stubble: Management
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Hart 2012 Wheat

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser Not specified

Hart 2012 Barley

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser Not specified

Hart 2013 Barley

Sow date 7 June 2013
Harvest date Not specified
Plot size 2.7m x 12m
Plot replication 3
Fertiliser

Normal nutrition DAP (18:20) + Zn 2% @ 60 kg/ha

High nutrition DAP (18:20) + Zn 2% @ 85 kg/ha, SOA (21:0:24) @ 4.5 kg/ha and urea (46:0) @ 11 kg/ha

Hart 2013 Wheat

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 Barley

# Treatment 1
Protein (%) Test weight (kg/hL) Grain yield (t/ha) Screenings (<2.0mm sieve) (%)
1 Stubble removed + high nutrition 12.9 63.9 5.89 6.3
2 Stubble removed + normal nutrition 12.8 64.5 5.95 5.6
3 Standing stubble + high nutrition 13.3 64.6 6 4.8
4 Standing stubble + normal nutrition 12.4 65.6 5.82 4.2
5 Worked stubble + high nutrition 12.9 64.6 5.88 6.4
6 Worked stubble + normal nutrition 12.7 64.4 5.6 5.6

Grain yield t/ha


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Protein %


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Screenings (<2.0mm sieve) %


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Test weight kg/hL


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Trial results Wheat

# Treatment 1
Protein (%) Screenings (<2.0mm sieve) (%) Grain yield (t/ha)
1 Stubble removed + high nutrition 11.9 3.6 2.05
2 Stubble removed + normal nutrition 11.5 5.2 1.83
3 Standing stubble + high nutrition 12.3 6.2 1.77
4 Standing stubble + normal nutrition 11.6 5.7 1.69
5 Worked stubble + high nutrition 12.1 7 1.76
6 Worked stubble + normal nutrition 11,7 6.2 1.87

Grain yield t/ha


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Protein %


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Screenings (<2.0mm sieve) %


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Hart, SA Calcarosol
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Hart, SA Chromosol
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 Hart SA
2013 622.8mm
2012 654.6mm
2011 683.8mm
2010 686.7mm
2009 669.9mm
2008 633.9mm
2007 649.9mm
2006 651.2mm
2005 675.4mm
2004 633.0mm
2003 652.2mm
2002 649.4mm
2001 674.5mm
2000 625.6mm
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

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Climate

Hart SA 2013


Observed climate information

Rainfall trial gsr (mm) 303mm

Derived climate information

Hart SA

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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 report and links

2013 trial report



Trial last modified: 09-12-2019 19:32pm AEST