Optimum sowing window to maximise canola yield in Western Australia

Imma Farre1, Martin Harries2, Jackie Bucat3, Mark Seymour4

1 Department of Primary Industries and Regional Development (DPIRD), 3 Baron-Hay Court WA 6151 South Perth; https://www.agric.wa.gov.au/; Email: imma.farre@dpird.wa.gov.au

2DPIRD, Geraldton; 3DPIRD, South Perth; 4DPIRD, Esperance


In the last decade there has been a trend towards earlier sowing of canola by Western Australian farmers. Time of sowing trials were conducted in 3 locations in 2018 to obtain canola yields for very early sowings and to validate the Agricultural Production Systems Simulation (APSIM)-Canola model for very early sowings.  A simulation study using the APISM-Canola model determined the optimum sowing window to maximise canola yield for 24 locations and 3 canola cultivars in Western Australia (WA).  As a rule of thumb, in WA, in low and medium rainfall locations, the optimum sowing period for a medium maturity cultivar is April; and in the high rainfall locations the optimum sowing window is from early-April to mid or late-May.


The Australian Society of Agronomy is the professional body for agronomists in Australia. It has approximately 500 active members drawn from government, universities, research organisations and the private sector.

Photo Credits

David Marland Photography david_marland@hotmail.com Graham Centre for Agricultural Innovation, Charles Sturt University

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