Managing stubble and nutrition to increase soil carbon

2012 - 2013

Research organisaton
Funding source

Trial details

Researcher(s) Sarah Noack and Peter Hooper (Hart Field Site Group)
Year(s) 2012 - 2013
Contributor Hart Field Site Group
Trial location(s) Site 5, 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 Wheat
Barley
Treatment type(s)
  • Fertiliser
  • Fertiliser: Application
  • Stubble
  • 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
Grain yield (t/ha) Screenings (<2.0mm sieve) (%) Protein (%) Test weight (kg/hL)
1 Stubble removed + high nutrition 5.89 6.3 12.9 63.9
2 Stubble removed + normal nutrition 5.95 5.6 12.8 64.5
3 Standing stubble + high nutrition 6 4.8 13.3 64.6
4 Standing stubble + normal nutrition 5.82 4.2 12.4 65.6
5 Worked stubble + high nutrition 5.88 6.4 12.9 64.6
6 Worked stubble + normal nutrition 5.6 5.6 12.7 64.4

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

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
Site 5, Hart, SA Calcarosol
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 5, Hart, SA Chromosol
National soil grid Source
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

Site 5, Hart SA 2013


Observed climate information

Rainfall trial gsr (mm) 303mm

Derived climate information

Site 5, 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 last modified: 09-12-2019 19:32pm AEST