Canola blackleg spore shower risk forecast for Western Australia – 23 May 2022

Page last updated: Tuesday, 24 May 2022 - 4:22pm

The DPIRD blackleg forecast model predicts the dates of spore maturation on canola stubble. Spore showers will commence soon after the spores are mature in the fruiting bodies. The model then predicts the risk of matching spore release with the seedling susceptible stage of the crop (4 – 6 leaf stage). The current forecast is based on weather data (1st January to 23rd May 2022) from the nearest weather station. Projections assume four millimetres (mm) of rainfall per week from now until the end of the year.

Spore shower risk forecast map

Spore shower risk forecast map
Map showing the relative current risk of spores coinciding with the seedling stage based upon Blackleg Sporacle Model outputs for various locations in Western Australia, 23rd May 2022.

If you are using the BlacklegCM decision support tool you can manually enter the blackleg risk levels that relate to your sowing date and location into the app under the “Crop Circumstances – Spore maturity risk” section. If you would like a location to be added to this forecast page please email CropDiseaseTools@dpird.wa.gov.au.<--pagebreak-->

Contact information

Jean Galloway
+61 (0)8 9690 2172