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Fall Armyworm feeding in vegetative corn. Photo: S. Fleischer, Penn State
PestWatch Report on August 2, 2017 - News News
Although corn earworm dropped somewhat, counts are hovering above a 5-6 day threshold, and reaching a 4-5 day threshold in Erie. More
Adult Allium Leafminer
Allium Leafminer Expected to Emerge in April - News News
The allium leafminer, Phytomyza gymnostoma, is a fly that originates from Poland, Germany, Austria and Spain, and was confirmed in 18 counties in Pennsylvania last year. More
Female Allium Leafminer making distinct damage pattern. By Tim Elkner
Allium Leafminer Spring Update: April 10, 2017 - News News
The spring season has begun! This past week (April 3-April 9) we had our first damage sighting. We've also had field collected pupa emerge over the weekend suggesting the beginning of adult activity. More
Corn Earworm is present in most sites, and above spray thresholds for silking corn in Blair and Washington County. Photo: S. Fleischer, Penn State
PestWatch Report June 28, 2017 - News News

PestWatch Report June 28, 2017

06/29/2017

Updates on Corn earworm (CEW) and European corn borer (ECB). More
Fall Armyworm feeding in vegetative corn. Photo: S. Fleischer, Penn State
PestWatch Report on July 6, 2017 - News News
Corn earworm (CEW) has been detected in all 30 trapping sites. More
European corn borer larvae (left) adults (right). Photo: ©Marlin E. Rice
PestWatch Report on July 18, 2017 - News News
Corn earworms are low in most locations, European corn borer infestations are spotty, and fall armyworm immigration has started. More
European corn borer larvae.
PestWatch Report on July 26, 2017 - News News
All pest species are increasing. Spikes of corn earworm are starting, and sap beetle problems have been occurring. More
Corn earworm trap in Montgomery County, PA. Photo: A. Frankenfield, Penn State
PestWatch Report on August 15, 2017 - News News
Corn earworm are starting to spike in southeastern PA, and remain stubbornly high in Erie County and to the southwest near Pittsburgh. More
Corn earworm trap in Montgomery County, PA. Photo: A. Frankenfield, Penn State
PestWatch Report on August 23, 2017 - News News
Most sites are above a 4-5, or 5-6, day spray threshold for corn earworm. More
Corn earworm counts increased in this farm in Montgomery County, PA. Photo: A. Frankenfield, Penn State
PestWatch Report - August 30, 2017 - News News
Corn earworm counts spiked to a 3-4 day threshold in Erie, Fayette, Lycoming, Washington, Westmoreland, and York Counties. More
Corn earworm adult moth.
PestWatch Report - September 6, 2017 - News News
Corn earworm counts spiked to a 3-4 day threshold in Erie, Lycoming, Washington, Westmoreland, and York Counties. More
Corn earworm trap in Montgomery County, PA. Photo: A. Frankenfield, Penn State
PestWatch Report on August 9, 2017 - News News
Although CEW are low in most locations, captures can change rapidly at this time of year. More
Figure 2. Pupae in base of allium plants. They have been in the pupal stage throughout the summer, and should emerge as adults this fall. Photo: L. Donoval.
Fall Re-Emergence of the Allium Leafminer - News News
It’s soon time for emergence of allium leafminer adults. More
Allium Leafminer Adult
Alert: The Allium Leafminer is active! - News News
The Allium Leafminer has emerged this week and we are already seeing feeding damage signs. Protect your crop! More