Early blight (EB) is a disease of potato caused by the fungus Alternaria solani. It is found wherever potatoes are grown. The disease primarily affects leaves and stems, but under favorable weather conditions, and if left ...

The Colorado potato beetle, a native American insect, has spread around the world since its discovery in 1824 on the eastern slopes of the Rocky Mountains in the Colorado-Nebraska area where it fed on a weed in the potato ...

The potato leafhopper (PLH) is a serious pest of vegetable, forage, and fruit crops in the eastern and midwestern United States. PLH does not overwinter in the northern portion of its infestation range, since the insect ...

Black dot disease of potato, caused by the fungus Colletotrichum coccodes, is generally considered to be a weak root pathogen of potato. Recent studies in New York and elsewhere have revealed, however, that this disease ...

Rhizoctonia solani is a fungus that attacks tubers, underground stems, and stolons of potato plants. Although it probably occurs wherever potatoes are grown, it causes economically significant damage only in cool, wet ...

The soilborne fungus Verlicillium albo-alrum is present in most cool soils of the Northeast and can attack over 200 plant species, especially tomatoes, potatoes, eggplant, strawberries, and black raspberries. Other susceptible ...

Botrytis blight, or gray mold, as it is commonly known, has an exceptionally wide host range with well over 200 reported hosts. The fungus can occur as both a parasite and a saprophyte on the same wide range of hosts. This ...

The stalk borer is a native American insect which was mentioned as a pest in Massachusetts and Pennsylvania prior to 1852 when it was first described as a species. The stalk borer belongs to the large group of noctuid or ...

The green peach aphid (GPA) is distributed worldwide and has a host range of over 400 species of plants. In the United States, green peach aphid is a serious pest of vegetables and potatoes. Economic damage results from ...

Potatoes are a vegetatively propagated crop, and many disease organisms including several viruses and a viroid are disseminated in tubers. The important role that tubers play in virus spread is recognized by the strict ...