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Black rot on cabbage, caused by the bacterium Xanthomonas campestris pv. campestris. Note characteristic “V” shaped lesions starting at leaf margin. Photo: Lee Stivers, Penn State
Vegetable - Small Fruit Current Issues: Mid-June 2018 - News News
Cloudy weather, rainstorms, and variable temperatures across the state have slowed some crops and created very favorable conditions for disease development. More
Pepper transplants. Photo: Tom Ford, Penn State
Vegetable - Small Fruit Current Issues: May 18, 2018 - News News
It’s no secret that this spring has been cold and wet across Pennsylvania. On many farms, planting has been delayed as much as three weeks, and many crops already in the ground are developing more slowly than usual. More
Allium leafminer feeding damage on onion leaves. Photo: Tim Elkner, Penn State
Allium Leafminer Now Active in Southeast Pennsylvania - News News
Leaf symptoms of adult allium leafminer activity were observed on chives, garlic and wild garlic in a home garden in the Leola area of Southeast Pennsylvania on April 13, 2018. 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
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
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