Can we extend the sowing window of canola in WA: #2 Wongan Hills


Research organisaton
Funding source

Trial details

Researcher(s) Martin Harries, Imma Farre, Jackie Bucat, Mark Seymour: DPIRD
Year(s) 2018
Contributor Department of Primary Industries and Regional Development WA
Trial location(s) Wongan Hills Research Station, WA
Can we extend the sowing window of canola in WA: #2 Wongan Hills locations

To investigate yield and phenology of canola varieties when sown in March to provide better advice to agronomists and growers about the best varieties to use and safe sowing and flowering windows.

Key messages
  • Yield were impressive; 1.9t/ha from April 26 and 2.2t/ha from May 17.
  • Mid-season maturity varieties showed the greatest plasticity in plant development across sowing dates and may be a good option over a wide sowing/establishment period.
  • Short season hybrids may enable the sowing window to be extended later with reduced risk.
  • Long season varieties yielded poorly from these sowing dates.
Lead research organisation Department of Primary Industries and Regional Development WA
Host research organisation N/A
Trial funding source GRDC DAW00227
Related program N/A

Thanks to Salzar Rahman for measurements and Shari Dougal and the Wongan Hills Department of Primary Industries and Regional Development Research station for managing this trial. Thanks to DPIRD and GRDC for funding.

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


Crop type Oilseed: Canola
Treatment type(s)
  • Sowing: Timing
Trial type Experimental
Trial design Replicated
Sow rate or Target density 40 plants/m2
Sowing machinery

Cone seeder.

Sow date March 15, April 5, April 26 and May 17
Harvest date 24 October 2018
Plot size 10m x1.54m
Plot replication 4
Plot blocking 4
Plot randomisation Not specified
Paddock history Wheat 2017
Fertiliser Not specified
Herbicide Not specified
Insecticide Not specified
Fungicide Not specified
Pesticide Not specified
Soil amelioration Not specified
Seed treatment Not specified
Inoculant Not specified
Tillage Not specified
Other trial notes 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
Wongan Hills Research Station, WA Deep sand
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Wongan Hills Research Station, WA Anthroposol
National soil grid Source
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



Wongan Hills Research Station WA 2018

Observed climate information
Rainfall avg gsr (mm) 258mm
Rainfall trial total (mm) 359mm
Derived climate information
BOM Data source WONGAN HILLS NORTH [1060] 2km proximity to trial site location


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.