Retaining open pollinated (OP) canola seed on-farm


Research organisaton
Funding source

Trial details

Researcher(s) Mark Seymour (DPIRD)
Year(s) 2018
Contributor Department of Primary Industries and Regional Development WA
Trial location(s) Grass Patch, WA
Retaining open pollinated (OP) canola seed on-farm locations

To evaluate if retaining OP canola seed leads to reduced yield or oil.

Key messages
  • At Grass Patch in 2018 hybrid TT’s produced higher yields and gross margins than most of the OP TT canola variety ATR Bonito treatments.
  • Retaining ATR Bonito seed ‘on-farm’ for 1, 2, 3 or 4 years produced similar yields, oil and higher gross margins than purchasing new OP seed.
  • Using ATR Bonito seed stored for 4 years produced plants lacking in vigour and overall poorer performance than growing out and retaining seed each year or purchasing new commercial seed.
Lead research organisation N/A
Host research organisation N/A
Trial funding source GRDC DAW00227
Related program Tactical Break Crop Agronomy

This experiment is one of a series conducted throughout WA as part of the GRDC/DPIRD co-funded project “Tactical Break Crop Agronomy in Western Australia”. Thanks to the Esperance TSU for trial management and Pam Burgess for providing technical assistance to ensure all treatments and measurements occurred in a timely and accurate fashion.

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


Crop type Canola
Treatment type(s)
  • Crop
Trial type Experimental
Trial design Blocked

Grass Patch 2018

Sow date 18 April 2018
Harvest date 13 November 2018
Plot size Not specified
Plot replication 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
Grass Patch, WA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Grass Patch, WA Anthroposol
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 Grass Patch WA
2018 458.6mm
2017 461.1mm
2016 468.8mm
2015 472.4mm
2014 456.7mm
2013 475.7mm
2012 467.7mm
2011 438.5mm
2010 445.7mm
2009 468.1mm
2008 461.0mm
2007 464.6mm
2006 472.7mm
2005 460.5mm
2004 474.2mm
2003 487.0mm
2002 461.9mm
2001 460.9mm
2000 472.5mm
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



Grass Patch WA 2018

Observed climate information

Rainfall trial gsr (mm) 170mm

Derived climate information

Grass Patch 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: 13-08-2019 10:13am AEST