- Esperance (Gibson)
Apothecia are continuing to be produced in the DPIRD Sclerotinia sclerotia depots at Geraldton, Miling, Merredin, Northam and Esperance (Gibson).
Plant pathologist Kithsiri Jayasena (DPIRD) has identified Sclerotinia ascospores in spore traps located at Talbot (near York).
So far we have not had any apothecia in our depots at Albany or Woodanilling.
Canola crops sown into or next to 2018, 2019 and 2020 canola paddocks are at increased risk of developing sclerotinia stem rot.
Growers are reminded that the SclerotiniaCM decision support tool is available for use during crop flowering to help growers/consultants determine the likely economic returns from applying fungicide at a specific time during flowering. For more information refer to DPIRD’s SclerotiniaCM decision support tool page.
Several fungicide products are registered for the control of Sclerotinia in canola. Fungicides need to be applied as recommended per product label, and no later than 50% bloom. For more information refer to DPIRD’s Registered foliar fungicides for canola in WA page.
DPIRD’s PestFax service is keen to receive any reports of any other apothecia finds or sclerotinia disease observations as the season progresses.
For information on previous apothecia reports received this season and managing sclerotinia refer to;
- DPIRD’s 2021 PestFax Issue 8 article More sclerotinia apothecia are germinating
- DPIRD’s Managing sclerotinia stem rot in canola page
- GRDC’s Sclerotinia stem rot in canola factsheet.
For more information on Sclerotinia contact plant pathologists Andrea Hills, Esperance on +61 (0)8 9083 1144, Ciara Beard, Geraldton on +61 (0)8 9956 8504 or Kylie Chambers, Northam on +61 (0)8 9690 2151.
Article author: Jean Galloway (DPIRD Northam).