How important is straw for yield of no-till crops on heavy soils in the low rainfall southern Mallee?

2008

Research organisaton
Funding source

Trial details

Researcher(s) Claire Browne (BCG)
Ben Jones (Mallee Focus )
Year(s) 2008
Contributor Birchip Cropping Group
Trial location(s) Site 1, Jil JIl, VIC
How important is straw for yield of no-till crops on heavy soils in the low rainfall southern Mallee? locations
Aims

To test if no-till crops grown on clay soils in the low rainfall, southern Mallee environment would yield better if more straw could be retained on the soil surface from the previous crop.

Key messages
  • Wheat grain yield in 2007 was increased by 0.2t/ha after the addition of 5.0t/ha of wheat straw
  • Straw is important for decreasing evaporation and conserving moisture in topsoil, particularly after canopy closure and when the crop is senescing
  • The additional moisture available under straw significantly increased dry matter production after GS65.
  • Inter-row sowing reduces straw burial
Lead research organisation N/A
Host research organisation N/A
Trial funding source GRDC
Related program N/A
Acknowledgments

This research was funded by GRDC Flexible Farming Systems project. The authors gratefully acknowledge the contributions made to this project by John Stuchbery & Associates, the farmer champions (Ian & Warwick McClelland, Paul Barclay, Brad Martin & Allen Posthlthwaite), Fiona Best, Simon Craig, Karen Chapman, Liam Coffey and James Jess. We would also like to give special acknowledgements to O’Connor’s Case IH, for their generosity in supplying Trimble auto-steer guidance for this trial.


Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop types Wheat
Fallow
Barley
Treatment type(s)
  • Crop: Protection
  • Stubble
Trial type
Trial design

Jil JIl 2008 Wheat

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

Jil JIl 2008 Fallow

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

Jil JIl 2008 Barley

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Download the trial report to view additional method/treatment information
Trial source data and summary not available
Check the trial report PDF for trial results.
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 1, Jil JIl, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Site 1, Jil JIl, VIC Calcarosol
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 Site 1, Jil JIl VIC
2008 802.1mm
2007 809.8mm
2006 814.0mm
2005 848.9mm
2004 795.2mm
2003 821.3mm
2002 792.0mm
2001 801.4mm
2000 744.9mm
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

Derived climate information

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

Site 1, Jil JIl VIC

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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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: 25-11-2019 09:12am AEST