Weed control using narrow windrows vs EMAR chaff deck

CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Helen McMillan (CWFS)
Year(s) 2016
Contributor Central West Farming Systems
Trial location(s) Loxton, SA
Weed control using narrow windrows vs EMAR chaff deck locations

To investigate the impact that two different harvest weed seed control (HWSC) methods – narrow windrowing of header trash and the Esperance Mobile Ag Repairs (EMAR) chaff deck – have on reducing the weed burden in the following crop.

Key messages
  • Concentrating the header trash into rows prevents spreading of weed seeds across the paddock. Additionally, it allows for site specific weed management and weed seed destruction through strategic burning.
  • A low cutting height (10cm) can allow greater than 95% weed seed capture and placement
    into rows. However this harvest height can impact harvest cost, speed and efficiency.
Lead research organisation Central West Farming Systems
Host research organisation N/A
Trial funding source GRDC CWF00020
Related program N/A

CWFS would like to acknowledge the support provided by Matthew Burkitt and Northparkes Mine; without their in-kind support the trials would not have been possible. CWFS would also like to acknowledge Nick Hill,
former CWFS project manager and the CWFS Agronomy Team who were responsible for the data collection reported in this paper.

Other trial partners SPAA
Download the trial report to view additional trial information


Crop type Not specified
Treatment type(s)
  • Crop: Protection
Trial type Article/commentary
Trial design Not applicable

Loxton 2016

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
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 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

2016 trial report

Trial last modified: 26-11-2019 15:11pm AEST