Penn State Extension

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Japanese beetle on raspberries. Photo: Kathy Demchak, Penn State
Vegetable - Small Fruit Production Issues: July 12, 2018 - News News
Downy mildew was confirmed on cucumber in Mifflin County on July 11. Warmer weather throughout the state is helping crops along, but has also been good for insect pests. More
The potato leafhopper, Empoasca fabae, is a pest that is easy to overlook until the damage - called "hopperburn" - "burns" you. Photo: Penn State College of Agriculture
Vegetable - Small Fruit Current Issues: June 28 2018 - News News
Wet weather and variable temperatures across the state continue to be challenging for vegetable and berry production. More
Hopperburn in alfalfa resulting from potato leafhopper feeding. Photo: Bryan Jensen, University of Wisconsin, Bugwood.org
Potato Leafhopper is Abundant in Alfalfa - News News
Damage to alfalfa from potato leafhopper has caught some growers by surprise. Scout your fields to determine if your local populations are problematic! More
Source: Steve L. Brown, University of Georgia, Bugwood.org
Tree Fruit Insect Pest - Potato Leafhopper - Articles Articles
Potato leafhopper, Empoasca fabae, is a migratory pest of many crops. It feeds on leaves of rapidly growing apple terminals and may aid in spread of fire blight. More
J.L. Danet, INRA Centre de Recherches de Bordeaux, Bugwood.org
Potato Leafhopper on Woody Ornamentals - Articles Articles
The potato leafhopper has been noted on more than 200 host plants, many of which are ornamental plants. However, this insect is best known as a field crop pest. More
Frank Peairs, Colorado State University, Bugwood.org
Potato Leafhopper on Alfalfa - Articles Articles
The potato leafhopper is the most destructive insect to alfalfa in Pennsylvania, causing average annual losses of approximately $15 million. More
Frank Peairs, Colorado State University, Bugwood.org
Potato Leafhopper on Vegetables - Articles Articles
The potato leafhopper, Empoasca fabae, is a pest that is easy to overlook until the damage - called "hopperburn" - "burns" you. More
Alfalfa Weevil
Alfalfa Weevil - Articles Articles

Alfalfa Weevil

John Tooker, Ph.D.

Alfalfa weevil is one of the two most-damaging insect pests of alfalfa in Pennsylvania (the other is potato leafhopper). It is an exotic species that likely evolved in Asia, but appears to have been introduced to the U.S. at least three times. More
Assessing Soybean Fields for Insect Damage
Assessing Soybean Fields for Insect Damage - Articles Articles
This time of year (July) a suite of insect pest species are feeding upon soybean foliage. More