See All Pest, Disease and Weed Identification

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Figure 1. Lodged corn seen from a distance.
Corn rootworms Suspected of Resistance to Bt Corn Varieties Discovered - Articles Articles
Western corn rootworms that developed resistance to some Bt corn varieties may now be a problem in PA. More
Weed Control in Home Fruit Plantings
Weed Control in Home Fruit Plantings - Articles Articles

Weed Control in Home Fruit Plantings

Robert Crassweller, Ph.D.

Weed control can be accomplished chemically or mechanically. Depending on the situation, each method has its advantages and disadvantages. More
Spur Blight in Home Raspberry Plantings
Spur Blight in Home Raspberry Plantings - Articles Articles

Spur Blight in Home Raspberry Plantings

Robert Crassweller, Ph.D.

Red and purple raspberries are more affected by spur blight than black raspberries. Blackberries appear to be immune. More
Penn State Department of Plant Pathology & Environmental Microbiology Archives, Penn State, Bugwood.org
Rust Diseases of Brambles in the Home Fruit Planting - Articles Articles
Orange rust is a fungal disease that occurs only on brambles, particularly blackberries, dewberries, and black raspberries. More
Powdery Mildew in Brambles in Home Fruit Plantings
Powdery Mildew in Brambles in Home Fruit Plantings - Articles Articles
Powdery mildew is occasionally a serious problem on susceptible varieties of red and black raspberries. Infected plants may be stunted and less productive. More
Pest Management in Brambles in Home Fruit Plantings
Pest Management in Brambles in Home Fruit Plantings - Articles Articles
The following practices will help in both insect and disease control. More
Leaf Spots in Strawberries in Home Fruit Plantings
Leaf Spots in Strawberries in Home Fruit Plantings - Articles Articles
A wide array of leaf spots infect strawberry species, including birds-eye leaf spot, black leaf spot, septoria leaf spot, cercospora leaf spot, alternaria leaf spot, red spot, and angular leaf spot. More
Sandra Jensen, Cornell University, Bugwood.org
Late Leaf Rust of Brambles in Home Fruit Plantings - Articles Articles
Late leaf rust can be a problem on fall-bearing raspberries. More
Botrytis Fruit Rot on Brambles in the Home Garden
Botrytis Fruit Rot on Brambles in the Home Garden - Articles Articles
Botrytis fruit rot or gray mold is the most common and most serious disease of Rubus species worldwide. More
Cane Blight on Brambles in the Home Garden
Cane Blight on Brambles in the Home Garden - Articles Articles

Cane Blight on Brambles in the Home Garden

Robert Crassweller, Ph.D.

Cane blight usually affects only canes that have been wounded in their vegetative year. Black raspberry is more susceptible to this disease than other brambles. More
Mourad Louadfel, Bugwood.org
Keep an Eye Out for Cereal Leaf Beetle - Articles Articles
Scout now for infestations of cereal leaf beetle in small grain fields. The larval stage feeds on the leaves and fields appear white if heavily infested. 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
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