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: email@example.com
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.