Yuna trial results - RR vs TT canola Roundup Ready


Research organisaton
Funding sources

Trial details

Researcher(s) Darren Chitty (Landmark)
Year(s) 2011
Contributor North East Farming Futures
Trial location(s) Yuna, WA
Yuna trial results - RR vs TT canola Roundup Ready locations

To compare the profitability between the RR and TT system as well as between OP and Hybrid varieties within these two systems.

Key messages
  • There were no significant visual vigour or establishment differences between retained or pedigree ATR Cobbler. However, in previous seasons this has been observed in the paddock with some growers, as well as at other trial sites this year from the same seed that was used in this trial. This may be due to the unknown vigour of the seed under different broad-acre paddock situations.
  • CB Eclipse RR showed good vigour and growth initially from emergence until late flowering. From this stage, CB Eclipse RR finished flowering quite rapidly in comparison to the Hyola 404RR and 505RR, both which continued to flower strongly tak-ing advantage of the seasonal conditions. This correlates to past experiences with Hyola 404RR being an adaptable variety that will flower earlier or later depending on current seasonal conditions.
  • There was a distinct increase in plant vigour and biomass with the RR Hybrids compared to the RR open pollinated varieties, which is commonly observed in many trials across Australia. This improvement in vigour (along with adequate plant popula-tions) has a significant impact on the level of crop competition achieved which is critical for adequate weed control in the RR system. The vigour advantage in the Hybrid TT varieties was not apparent until late vegetative through to early flowering.
Lead research organisation North East Farming Futures
Host research organisation N/A
Trial funding source Landmark
Trial funding source North East Farming Futures (NEFF)
Trial funding source Yuna Farm Improvement Group
Related program N/A
  • John Warr - supplying trial site and various required inputs
  • Darren Chitty Landmark R+D s - seeding and harvesting
  • Grant Thompson Crop Circle Consulting - spraying and harvesting
  • Justin Kudnig Pacific Seeds - reviewing this paper
  • YFIG, NEFF and Landmark - co-funding the trial.




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

Yuna 2011

Sow rate or Target density 3kg/ha OP’s, 2.5kg/ha Hybrids
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication 4

100kg MacroPro Extra, 60L Flexi-N 14/6, 150L Liqui-NS 11/7

(67N, 11P, 11K, 18S, 0.1Cu, 0.2Zn)


Pre 3L Triflur + 1L Lorsban

Post TT 2.2kg Atrazine, RR 1 application of 0.9kg/ha RR Herbicide

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Grain yield (t/ha) Oil (%)
1 Hyola 404 2.18 50.5
2 Hyola 505 1.9 49.5
3 Taipan 1.78 46.9
4 GT 61 1.69 45.5
5 Eclipse 1.7 45.9

Grain yield t/ha


Oil %

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Yuna, WA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Yuna, 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 Yuna WA
2011 186.7mm
2010 115.9mm
2009 121.7mm
2008 177.0mm
2007 135.1mm
2006 144.1mm
2005 126.9mm
2004 132.9mm
2003 141.0mm
2002 127.3mm
2001 117.5mm
2000 170.8mm
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.

Yuna 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 12:19pm AEST