New mefenoxam-resistant strain of late blight found

Potatoes in Canada
August 30, 2018
By Potatoes in Canada
A new strain of late blight, US-25, has been identified in New York state, according to Eugenia Banks’ latest potato update.

While this strain of late blight has only been found in tomatoes so far, under a laboratory setting it has infected potatoes. Christine Smart at Cornell University has been keeping potato pathologists informed of this new type which is now known to be mefenoxam resistant and of the A2 mating type.

So far this year, the US-23 strain has the been the most prominent strain of late blight found. Incidents have been reported in Ontario, Michigan, Illinois and Wisconsin. US-23 is still susceptible to mefenoxam-based fungicide, like Ridomil.

Subscription Centre

New Subscription
Already a Subscriber
Customer Service
View Digital Magazine Renew

Most Popular

Latest Events

Potato Business Summit
Wed Jan 09, 2019
Potato Expo 2019
Wed Jan 09, 2019
AIM Workshops: Nitrogen Management
Mon Jan 14, 2019 @ 1:00PM -
AIM Workshops: Nitrogen Management
Tue Jan 15, 2019 @ 9:00AM -

We are using cookies to give you the best experience on our website. By continuing to use the site, you agree to the use of cookies. To find out more, read our Privacy Policy.