Maximising canola yield by getting establishment right - CT tolerant canola emergence


Research organisaton
Funding source

Trial details

Researcher(s) Leigh Davis (SARDI)
Ashley Flint (SARDI)
Brian Purdie (SARDI)
Brenton Spriggs (SARDI)
Andrew Ware (SARDI)
Year(s) 2014
Contributor SARDI Minnipa Agricultural Centre
Trial location(s) Minnipa Agricultural Centre, SA
Maximising canola yield by getting establishment right - CT tolerant canola emergence locations

To maximise canola productivity through creating soil specific management strategies that improve canola yields, profitability and establishment in field trials on lower and upper Eyre Peninsula (EP). In 2014, ten separate trials were conducted as part of this project at Minnipa Agricultural Centre, and Piednippie on upper EP. Four trials will be reported in this article but only from Minnipa Ag Centre trials, as the Piednippie trial site was too variable.

Key messages

Early sowing (15 April) had the largest positive impact on canola yield when comparing a range of treatments trialled in 2014, similar to results observed in 2013. Sowing on 15 April improved yields up to 45%, depending on variety, compared to 13 May sowing date. Good seeding depth and the correct seed rate proved important in maximising canola yield at the sites trialled in 2014, but not to the same extent as time of sowing. Sowing at 4.5 kg/ha at a 2 cm depth gave a 13% yield improvement over sowing at 1.5 kg/ha at 1 cm depth. Achieving approximately 50 plants/m2 of triazine tolerant varieties and 40 plants/m2 of Clearfield tolerant varieties was needed to maximise canola yields in trials conducted at Minnipa Agricultural Centre in 2014. Using farmer retained open pollinated seed did not cause a yield penalty when compared to commercially purchased seed in trials conducted at Minnipa in 2014.

Lead research organisation N/A
Host research organisation SARDI Minnipa Agricultural Centre
Trial funding source SAGIT
Related program N/A

Thank you to the South Australian Grains Industry Trust (SAGIT) for providing the funding. Thank you to Minnipa Agricultural Centre for providing the land for the trials.

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


Crop type Canola
Treatment type(s)
  • Sowing: Rate
  • Sowing: Method
  • Variety: Type
Trial type Experimental
Trial design Replicated

Minnipa Agricultural Centre 2014

Sow rate or Target density Three rates (1.5 kg/ha, 3 kg/ha and 4.5 kg/ha).
Sow date 6 May 2014
Harvest date Not specified
Plot size 1.5m x 10m
Plot replication 3

This trial received a total of 71 kg/ha 19:13:0 S9% and 39 kg/ha Urea fertiliser, applied at seeding and 73 kg/ha of Urea and 168 kg/ha SOA broadcast during the season (total of 110 kg/ha nitrogen).


The trial received knockdown of Roundup, plus 60 ml/ha Hammer. 650ml/ha Intervix, 400 ml/ha Targa was applied to control weeds.


A bare earth insecticide of 1 L/ha Chlorpyrifos at sowing. Multiple products were used during the season to control insects, which included aphids and diamond back moth.

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Variety
Treatment 1
Treatment 2
Grain yield (t/ha) Emergence plants (plants/m2)
1 Canola:43C80 Rate 1.5kg/ha Depth 1cm 1.32 31
2 Canola:43Y85 Rate 1.5kg/ha Depth 1cm 1.32 27
3 Canola:43C80 Rate 1.5kg/ha Depth 2cm 1.27 36
4 Canola:43Y85 Rate 1.5kg/ha Depth 2cm 1.18 20
5 Canola:43C80 Rate 1.5kg/ha Depth 4cm 1.36 28
6 Canola:43Y85 Rate 1.5kg/ha Depth 4cm 1.24 22
7 Canola:43C80 Rate 3kg/ha Depth 1cm 1.48 47
8 Canola:43Y85 Rate 3kg/ha Depth 1cm 1.49 41
9 Canola:43C80 Rate 3kg/ha Depth 2cm 1.38 46
10 Canola:43Y85 Rate 3kg/ha Depth 2cm 1.44 32
11 Canola:43C80 Rate 3kg/ha Depth 4cm 1.4 48
12 Canola:43Y85 Rate 3kg/ha Depth 4cm 1.42 29
13 Canola:43C80 Rate 4.5kg/ha Depth 1cm 1.45 62
14 Canola:43Y85 Rate 4.5kg/ha Depth 1cm 1.43 47
15 Canola:43C80 Rate 4.5kg/ha Depth 2cm 1.45 69
16 Canola:43Y85 Rate 4.5kg/ha Depth 2cm 1.51 58
17 Canola:43C80 Rate 4.5kg/ha Depth 4cm 1.46 49
18 Canola:43Y85 Rate 4.5kg/ha Depth 4cm 1.4 42

Grain yield t/ha


Emergence plants plants/m2

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Minnipa Agricultural Centre, SA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Minnipa Agricultural Centre, 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 Minnipa Agricultural Centre SA
2014 463.3mm
2013 404.5mm
2012 445.9mm
2011 499.9mm
2010 494.3mm
2009 495.5mm
2008 405.7mm
2007 396.3mm
2006 414.6mm
2005 375.4mm
2004 377.6mm
2003 376.5mm
2002 364.9mm
2001 423.1mm
2000 452.6mm
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



Minnipa Agricultural Centre SA 2014

Observed climate information

Rainfall trial gsr (mm) 290mm

Derived climate information

Minnipa Agricultural Centre SA


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: 08-10-2019 12:07pm AEST