Mullewa trials - TT canola varieties - hybrid VS open pollinated


Research organisaton

Trial details

Researcher(s) Grant Thompson (Crop Circle Consulting)
Year(s) 2011
Contributor North East Farming Futures
Trial location(s) Eradu, WA
Mullewa trials - TT canola varieties - hybrid VS open pollinated locations

To compare several current and new TT OP and Hybrid varieties.

Key messages
  • ATR Stringray was the highest yielding variety, even though it showed the least crop canopy and vigour of all varieties tested. This trait suggests it puts more resources into grain production than into crop biomass and leaf area.
  • The TT hybrid varieties exhibited the greatest leaf biomass and canopy closure by 21st July. However, due to a higher than ideal plant density, this heavier crop canopy did not translate into higher grain production.
  • The 2 new varieties from Nuseed – Stingray and Snapper, were the most profitable varieties in this trial and may re-place areas of Cobbler plantings in the future.
Lead research organisation N/A
Host research organisation N/A
Related program N/A
  • Peter and Miriam Barnetson – Rosewick - Eradu
  • Grant Thompson – Crop Circle Consulting
  • Oilseeds WA and Peter Barnetson for providing trials seed
  • Nick Green – Charella Farms – for loan of tractor mower for mowing trials site.
  • Peter and Miriam Barnetson – Seeding, Harvesting, Spraying, Grain analysis and hosting trials.
  • CBH – Hamish Maclean - Grain Canola Calculator 2012


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


Crop type Canola
Treatment type(s)
  • Crop: Type
Trial type Experimental
Trial design Replicated

Eradu 2011

Sow rate or Target density Approx 5 kg/ha
Sow date 15 May 2011
Harvest date Not specified
Plot size 100m x 17m
Plot replication 3

90kg MacroPro Extra and 40L Flexi N at sowing, 100kg NSK 4 leaf, 50L Flexi N early flowering.

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Variety
Grain yield (t/ha) Oil (%)
1 Stingray 1.83 47.3
2 Snapper 1.71 49.2
3 Cobbler 1.67 47.4
4 Junee HYB 1.54 45
5 Jardee HYB 1.54 43.1
6 Mallee HYB 1.5 43.1

Grain yield t/ha


Oil %

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Eradu, WA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Eradu, WA Tenosol
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 Eradu WA
2011 222.5mm
2010 162.5mm
2009 179.7mm
2008 216.3mm
2007 171.5mm
2006 161.4mm
2005 168.5mm
2004 170.2mm
2003 182.5mm
2002 160.2mm
2001 140.7mm
2000 212.3mm
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.

Eradu WA


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: 25-06-2019 12:15pm AEST