Disease Late Blight Pest Management Potato Tomatoes

Late blight spore trapping update: no evidence of Phytopththora infestans sporangia in Chatham-Kent yet this year

Joseph Tomecek (Tomecek Agronomic Services/M.Sc. candidate, Dept. of Plant Agriculture, Univ. of Guelph); Amanda Tracey (OMAFRA), Dr. Cheryl Trueman (Ridgetown Campus, Univ. of Guelph)

Since June 6 of this year, a project has been underway to assess Spornado and rotorod devices for the capture of Phytophthora infestans. At eight locations setup across the municipality of Chatham-Kent, there have been zero detections of Phytophthora infestans DNA that would indicate the presence of sporangia. The project will continue until the end of August.

For more information on this project, see our previous article posted on June 24.

If you suspect late blight in your tomato (or potato) crop, please reach out to Amanda Tracey (Amanda.tracey@ontario.ca, 519-350-7134) or Cheryl Trueman (ctrueman@uoguelph.ca, 226-971-0654) to confirm diagnosis.

Late blight was confirmed in eastern Ontario (Ottawa County) in late July this year.

Project collaborators: Yaima Arocha Rosete and Kristine White (Sporometrics), Hervé van der Heyden (Phytodata), and Genevieve Marchand (AAFC).

Funding acknowledgement: Ontario Tomato Research Institute, Fresh Vegetable Growers of Ontario, and the Ontario Agri-Food Innovation Alliance.

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