Automated spot spraying technology investigation


Research organisaton
Funding sources
<abbr title='Upper North Farming Systems'>UNFS</abbr> McAg Consulting

Trial details

Researcher(s) Matt McCallum
Year(s) 2013
Contributor Upper North Farming Systems
Trial location(s) Jamestown, SA
Automated spot spraying technology investigation locations
  • To evaluate the suitability of "spot spray" technology to control weeds on farming land in the Upper North.
  • To monitor weed control success on "hard to control" summer weeds such as fleabane, onion weed, saltbush type weeds.
  • To record the reduction in pesticide and water use using "spot spray" technology compared to conventional spraying.
  • To raise awareness amongst the community about the potential benefits of "spot spray" technology.
Key messages
  • Summer weed control is proven to increase yield, but is becoming a major cost and some summer weeds are difficult to control.
  • Cost savings of 20-90% were achieved across 20 paddocks using the WEEDit™.
  • Amajor benefit of using spot spraying technology was the ability to use high rates of chemical targeted onhard-to-kill weeds such as Stinkweed.
Lead research organisation Upper North Farming Systems
Host research organisation Upper North Farming Systems
Trial funding source UNFS
Trial funding source McAg Consulting
Related program N/A

Matt McCallum

Other trial partners Not specified
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Crop type None: No crop specified
Treatment type(s)
  • Herbicide: Application Method
Trial type Article/commentary
Trial design Not applicable

Jamestown 2013

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Other trial notes

Although impressive, the technology is expensive. Cost will depend on whether you are retrofitting a current boom or buying a complete unit off the shelf. My calculations below are based on the following assumptions,xThe cost for a basic 24m unit with a 3000-4000L tank is approximately $140,000. xSave 70% on summer spraying.xCurrently spending $30/ha on summer spraying, therefore saving $21/ha with a WEEDit™.Annual savings obviously dependson the scale of yo

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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
Jamestown, SA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Jamestown, SA Sodosol
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 Jamestown SA
2013 627.3mm
2012 650.2mm
2011 658.4mm
2010 654.0mm
2009 638.7mm
2008 610.6mm
2007 614.5mm
2006 614.9mm
2005 621.3mm
2004 580.3mm
2003 560.2mm
2002 558.8mm
2001 571.8mm
2000 513.6mm
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.

Jamestown SA

CAUTION: Trial site locality unknown; Climate data sourced from Upper North Farming Systems office location

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 report and links

2013 trial report

Trial last modified: 27-06-2019 11:18am AEST