Corn earworm is spiking in southeastern counties, and rising elsewhere. In southeastern counties, 3-4 day spray thresholds are being reached. Fall armyworm is also showing up, and Brown marmorated stink bug can invade fields at this time.
Outbreaks of late blight are continuing to be reported across PA and the Northeast region of the U.S.
Downy mildew has now been confirmed on cucumber, cantaloupe and butternut squash in Pennsylvania.
Low counts but damage present.
Although counts in traps have been low, the incidence is now widespread and damage being detected in fields.
Downy mildew on cucumber is now a common site across the state.
Sweet corn trap counts have been low, but damage has been reported from at least 3 sites. This could be due to weather affecting trap catch or sprays, trap placement in old corn while silking corn is nearby, or pyrethroid resistance.
Weeds growing between rows of plastic are a common mid to late season problem. Long pre-harvest intervals often limit the herbicide choices available for weed control.
Some blackberry growers, mainly in the southeastern part of the state, have noticed fruit quality problems. This article discusses some common blackberry fruit issues.
Spotted wing drosophila numbers are continuing to rise, and SWD is now being found in most berry plantings in the central and southeastern parts of the state.
Work in the Cornell tomato breeding program resulted in the release of the new fresh market tomato hybrid "Iron Lady", which is sold by High Mowing Organic Seeds starting with the 2013 season. Researchers would like feedback.
Late blight is now confirmed on tomato in Lancaster, Chester, Indiana and Somerset Counties and is suspected in several others.
This past week downy mildew continued to be confirmed in cucumber fields in several counties in the southeast region of PA.
In PA, confirmed reports continue to remain centralized in Lancaster Co.
As we get later into the season, early blight becomes an increasing concern in tomato and potatoes.
Corn earworms counts decreased, but second generation of european corn borer appears in spots
Spotted wing drosophila (SWD) is now being found more frequently in traps across the state, though numbers are still very low (0-3 per trap per week).
This is the first confirmed report of late blight in Pennsylvania in 2013.
Downy mildew was confirmed in a home garden in Bucks Co. and has been reported in a commercial cucumber field in Lancaster Co. PA.