UMass Extension Vegetable Program

Alerts

Pest Alerts, August 29, 2013

Late blight has been reported in several new farms and gardens across MA over the past week.  There are still no reports of the disease on potato in MA but the disease has been confirmed on potato in Northern VT and ME as well as NY and PA.  Environmental conditions remain extremely conducive to disease development and spread so be sure to scout tomato and potato fields carefully and often, and report outbreaks to your local extension service so the disease can be tracked.  Submit susp

Pest Alerts, August 22, 2013

Late blight was confirmed on tomato in Hampshire County, MA this week and the disease has spread throughout the Northeast and Mid-Atlantic due to favorable weather conditions this past week.  This is a disease that has the potential to cause complete crop losses and sweep through a community, a county, and a whole region, very rapidly.  Note that late blight is not yet confirmed in all counties in MA, nor in all New England states.

Pest Alerts, August 1, 2013

Late blight continues to spread slowly with new reports this week from Ohio, West Virginia, and Pennsylvania but no new reports in the Northeast.  Weather conditions continue to be conducive to disease development, with long periods of leaf wetness associated with overnight dew, and late blight models recommend a 5 day spray interval in most locations in MA.  Track disease progress at USA BLIGHT.  Fees for late blight diagnosis have been waived this

Pest Alerts, July 25, 2013

Late blight spread more slowly this past week but a new outbreak was confirmed on potato in Chittenden County, Vermont.  Weather conditions continue to be conducive to disease development and late blight models recommend a 5 day spray interval.  Track disease progress at USA BLIGHT.  Fees for late blight diagnosis have been waived this year so if you suspect you have an infected plant contact the UMass Plant Diagnostic Lab at 413.545.3209.  Once symp

Pest Alerts, July 18, 2013

Late blight continues to spread across the US, with new outbreaks confirmed on potato in Madison and Genessee Counties in New York and Allegan County, Michigan.  New disease reports on tomato were confirmed in Lancaster County, Pennsylvania, and Wayne County, OH.  Thus far, only strains US-7 (infects potato only; metalaxyl resistant) and US-23 (infects tomato and potato; metalaxyl sensitive) have been detected.  Despite high daytime temperatures, average daily temperatures are still be

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