Canola density response in low rainfall environments – East Buntine

CC BY 4.0

Research organisatons

Trial details

Researcher(s) Bob French (DAFWA)
Year(s) 2014
Contributor Liebe Group
Trial location(s) Buntine, WA
Canola density response in low rainfall environments – East Buntine locations

To compare the plant density response of yield and oil content between hybrid and open-pollinated (OP) canola in Triazine tolerant (TT) and Roundup Ready (RR) herbicide tolerance groups.

Key messages
  • In a low yielding season canola yield reached a plateau at between 20 and 40 plants/m².
  • Hybrid canola reached a plateau at lower density than open-pollinated canola.
  • Canola yield held up at high density well, even though plants became severely stressed in early winter and early spring.
  • Hybrid canola had a significant yield advantage over open-pollinated (OP) canola in a below average season.
Lead research organisation Department of Agriculture and Food WA
Host research organisation N/A
Related program N/A

The Fitzsimons Family and the Liebe Group, especially Elly Wainwright.

Shari Dougall and Bruce Thorpe, DAFWA Wongan Hills.

Andy Sutherland and Allen Randall DAFWA, South Perth, Sally Sprigg and Laurie Maiolo, DAFWA Merredin, Mark Seymour, DAFWA Esperance, and GRDC for funding.

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


Crop type Canola
Treatment type(s)
  • Crop
  • Sowing
  • Sowing: Row spacing
Trial type Experimental
Trial design Replicated

Buntine 2014

Sow rate or Target density Various as per protocol
Sow date 2 May 2014
Harvest date Not specified
Plot size 20m x 1.54m
Plot replication 3

02/05/2014: 80 kg/ha Macropro Plus (8 kg/ha N, 11 kg/ha P, 7 kg/ha K) banded

03/07/2014: 60 L/ha Flexi-N


02/05/2014: 2 L/ha Spray.Seed + 1.5 L/ha Trifluralin

20/05/2014: 900 g/ha Roundup Ready on RR treatments

21/05/2014: 2.2 kg/ha Atrazine + 1% oil on TT treatments

11/06/2014: 500 mL/ha Clethodim + 1% Hasten on whole trial

06/10/2014: 3 L/ha Reglone + 1% wetter


02/05/2014: 100 mL/ha Bifenthrin

06/06/2014: 85 mL/ha Dimethoate

05/09/2014: 300 mL/ha Alpha-cypermethrin

10/09/2014: 300 mL/ha Alpha-cypermethrin

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
Site Depth Type pH EC P K N A OC CAT
Buntine, WA 0 - 10cm Sandy Loam 5.60 0.05
Buntine, WA 10 - 20cm Sandy Loam 5.50
Buntine, WA 20 - 30cm Sandy Loam 4.70
Soil conditions
Trial site Soil texture
Buntine, WA Sandy loam
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Buntine, WA Kandosol
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 Buntine WA
2014 297.9mm
2013 318.6mm
2012 312.3mm
2011 308.2mm
2010 270.6mm
2009 300.9mm
2008 321.0mm
2007 247.4mm
2006 291.0mm
2005 295.9mm
2004 281.4mm
2003 272.9mm
2002 223.1mm
2001 255.5mm
2000 316.9mm
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



Buntine WA 2014

Observed climate information

Rainfall trial gsr (mm) 180mm

Derived climate information

Buntine WA

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
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: 23-07-2019 11:09am AEST