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Jon Yuschock,
Multicolored Asian Lady Beetle (Ladybug) - Articles Articles
The multicolored Asian lady beetle was introduced by the U.S. Department of Agriculture as a biological control agent for aphids and scale insects. More
Penn State Department of Plant Pathology & Environmental Microbiology Archives, Penn State,
Aphids on Ornamentals - Articles Articles
Many species of aphids or plant lice occur on ornamental trees and shrubs in Pennsylvania. More
Jim Occi, BugPics,
Activity - Population Growth Potential - Aphids! - Articles Articles
Skills: Observation, Scientific Method, Calculations, Biology. More
Once sticky cards are placed in plastic bags, a marker can be used to highlight and count important insects.
Common Insects Found on Sticky Cards in High Tunnels - Articles Articles
Using sticky cards is an important component of scouting for insects in high tunnels. More
Bramble Disease - Mosaic Virus
Bramble Disease - Mosaic Virus - Articles Articles
Mosaic affects all raspberries but seldom affects blackberries. The mosaic virus complex overwinters in infected plants and is spread by aphids. More
Aphids on Raspberries in Home Gardens
Aphids on Raspberries in Home Gardens - Articles Articles
Aphids are pear-shaped, tiny (1/16 to 3/8 inch long), soft-bodied, sucking insects with small heads and a pair of cornicles ("exhaust pipes"). More
Jim Baker, North Carolina State University,
Green Aphids in the Home Fruit Garden - Articles Articles
Green aphids include two species that are very difficult to distinguish, the apple aphid, Aphis pomi, and the spirea aphid, A. spiraecola. More
In the summer aphids vary from a yellow-green to a light green and have black cornicles. Photo by G. Krawczyk.
Tree Fruit Insect Pest - Green Aphids (Apple and Spirea Aphid) - Articles Articles
Spirea aphid, Aphis spiraecola, has largely displaced the apple aphid, A. pomi, in apple since the mid-1980s. 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
Barley Yellow Dwarf
Barley Yellow Dwarf - Articles Articles

Barley Yellow Dwarf

Alyssa Collins, Ph.D.

Barley yellow dwarf is one of the most widely distributed and destructive viral diseases of small grains. More