Controlled traffic: will it improve yields in the LRZ? A case study on deep sand


Research organisaton
Funding source

Trial details

Researcher(s) Claire Browne (BCG)
Year(s) 2018
Contributor Birchip Cropping Group
Trial location(s) Loxton, SA
Further information View external link
Controlled traffic: will it improve yields in the LRZ? A case study on deep sand locations

To determine the effects of machinery trafficking on soil properties and crop performance on a deep sand in the LRZ of south-eastern Australia.

Key messages

• Multiple machinery pass trafficking decreased crop yields for at least four years on a Loxton deep sand.
• Single pass machinery trafficking did not result in yield decreases at Loxton and rarely at any of the other trafficking soil types in this project.
• Most soils in the south-eastern Australian Low rainfall zone are not likely to remediate from compaction naturally.

Lead research organisation Birchip Cropping Group
Host research organisation N/A
Trial funding source GRDC ACT00004
Related program N/A

This research was funded by GRDC as part of the ‘Application of CTF in the Low rainfall zone’ project (ACT00004) and DJPR, SARDI, ACTFA, and SPAA.

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


Crop type Barley
Treatment type(s)
  • Soil: Compaction
Trial type Experimental
Trial design Randomised

Loxton 2018

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
Loxton, SA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Loxton, SA 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 Loxton SA
2018 140.0mm
2017 184.8mm
2016 159.5mm
2015 140.2mm
2014 179.2mm
2013 155.2mm
2012 197.1mm
2011 246.3mm
2010 207.4mm
2009 144.7mm
2008 145.0mm
2007 142.3mm
2006 153.6mm
2005 181.7mm
2004 139.8mm
2003 123.5mm
2002 124.0mm
2001 169.9mm
2000 175.5mm
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



Derived climate information

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

Loxton SA

NOTE: Exact trial site locality unknown - Climate data may not be accurate

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

SILO weather estimates sourced from
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: 22-03-2019 14:21pm AEST