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Plant & Pest Advisory > Vegetable Crops

Contact Information

The points of contact between Rutgers Cooperative Extension Service and the grower & business communities are the NJ County Agricultural Agents. The agents are a tremendous source of information for both new and experienced growers. Visit your local county extension office.

Saturday, June 2, 2012

Late blight update/Cornell test results

I received an email from Dr. Bill Fry at Cornell University letting us know that the late blight found on potato in NJ last week was typed as US23. US23 (A1 mating type) is pathogenic on both tomato and potato and sensitive to mefenoxam. 
With that, there have been no new reports of Late blight in New Jersey or region (with the exception of Long Island last week). Potato and tomato growers should be diligent in their scouting of fields and be on regular preventative fungicide maintenance program. 
It looks like the weather is going to cool off significantly over the next 5 to 10 days and there may be periods of prolonged leaf wetness and rainfall (possibly during the middle of next week).

If you suspect late blight please contact your county agent or myself.