Ryegrass management

CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Nicole Dimos (SPAA)
Karen Haigh (SFS)
Andrew Whitlock (Precision Agriculture)
Year(s) 2011
Contributor Society of Precision Agriculture Australia
Trial location(s) Wickliffe, VIC
Ryegrass management locations

To test the accuracy of ryegrass mapping using satellite imagery.

Key messages

Picking out the ryegrass from the cereal crops in spring did not prove to be effective.The ryegrass tiller count data was converted into a contoured map and divided into three zones for each paddock. Once again we compared the manually drawn zones and found a relatively good correlation but not good enough to mplement patch ryegrass management with confidence. A dual boom A more detailed analysis of previous yield maps when farmers determine their ryegrass patches would certainly improve the accuracy of their zone drawings. Any farmer wanting to implement patch ryegrass management should also consider btaining imagery at a time of the year when ryegrass is more visible such as prior to sowing or around crop establishment as these maps would more accurately define the weed patches with less crop effect.

Lead research organisation Society of Precision Agriculture Australia
Host research organisation N/A
Trial funding source GRDC SPA000010
Related program N/A

This project was funded by the Grains Research and Development Corporation (GRDC)

Other trial partners George Burdett (farmer/owner of site)
Download the trial report to view additional trial information


Crop type Wheat
Treatment type(s)
  • No treatment: Precision agriculture
Trial type Precision agriculture
Trial design Not applicable

Wickliffe 2011

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
Wickliffe, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Wickliffe, VIC 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 Wickliffe VIC
2011 678.6mm
2010 699.5mm
2009 686.1mm
2008 678.2mm
2007 667.1mm
2006 642.5mm
2005 666.6mm
2004 676.8mm
2003 684.7mm
2002 649.6mm
2001 639.8mm
2000 597.6mm
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.

Wickliffe VIC

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 last modified: 30-09-2019 15:17pm AEST