Improving water use efficiency – reducing soil evaporation

2012

Research organisatons
Funding source

Trial details

Researcher(s) Chris Lawson, Victor Sadras (SARDI) and Glenn McDonald (University of Adelaide)
Year(s) 2012
Contributor Hart Field Site Group
Trial location(s) ,
, SA
Condowie, SA
Site 5, Hart, SA
Improving water use efficiency – reducing soil evaporation locations
Aims

To use a thick layer of cereal straw maintained within the growing season to focus on reducing the amount of moisture lost to soil evaporation. 

Key messages
  • The addition of a straw layer acted to reduce evaporation and significantly increased grain yields and water use efficiency in 2012, at 4 field sites.
  • Soil evaporation also decreased with increasing light interception from larger crop canopies.
Lead research organisation South Australian Research and Development Institute
Host research organisation Hart Field Site Group
Trial funding source GRDC
Related program N/A
Acknowledgments

The Hart Field-Site Group wish to thank Brian Kirchner and Simon Goldsmith, Andrew and Rowan Cootes, Michael and David Miller, David Hentschke and Matt Ashby for the use of their paddocks and cooperation with this trial work.


Other trial partners The University of Adelaide
Download the trial report to view additional trial information

Method

Crop type Wheat
Treatment type(s)
  • Crop
  • Crop: Type
  • Crop: Rotation
Trial type
Trial design

2012

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

2012

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

Condowie 2012

Sow date 21 May 2012
Harvest date Not specified
Plot size 8m x 10m
Plot replication Not specified
Fertiliser

DAP @ 65kg/ha + 2% Zn

40 Kg N/ha on the 13th August

Hart 2012

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 Condowie

# Treatment 1
Grain yield (t/ha)
1 No straw in 2011 + no straw in 2012 1.66
2 Straw in 2011 + no straw in 2012 2.73
3 Straw in 2011 + straw in 2012 2.35
4 No straw in 2011 + straw in 2012 2.1

Grain yield t/ha


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Trial results Hart

# Treatment 1
Grain yield (t/ha)
1 No straw in 2011 + no straw in 2012 1.66
2 Straw in 2011 + no straw in 2012 2.73
3 Straw in 2011 + straw in 2012 2.35
4 No straw in 2011 + straw in 2012 2.1

Grain yield t/ha


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Trial results Saddleworth

# Treatment 1
Grain yield (t/ha)
1 No straw in 2011 + no straw in 2012 1.66
2 Straw in 2011 + no straw in 2012 2.73
3 Straw in 2011 + straw in 2012 2.35
4 No straw in 2011 + straw in 2012 2.1

Grain yield t/ha


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Trial results Saplding

# Treatment 1
Grain yield (t/ha)
1 No straw in 2011 + no straw in 2012 1.66
2 Straw in 2011 + no straw in 2012 2.73
3 Straw in 2011 + straw in 2012 2.35
4 No straw in 2011 + straw in 2012 2.1

Grain yield t/ha


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
, Not specified
, SA Not specified
Condowie, SA Calcarosol
Site 5, Hart, SA Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
, Chromosol
, SA Chromosol
Condowie, SA Chromosol
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

Condowie SA 2012


Observed climate information

Rainfall trial gsr (mm) 168mm

Derived climate information

SA

SA

Condowie SA

Site 5, Hart SA

SA

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SA

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Condowie SA

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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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 15:54pm AEST