The name “cutworm” is applied to a large number of larvae of lepidopterous species in the family Noctuidae. The moths are night flyers and the larvae are night feeders. Both stages hide during the day. Many of the cutworm ...

Phomopsis cane and leaf spot, once known as “dead arm,” is a common disease in most regions of the world where viticulture is practiced. Severely infected leaves are misshapen, yellow, and fall from the vine prematurely. ...

The European red mite (ERM) is a European species introduced to North America in the early 1900’s. It rapidly extended its range, and is now established in most deciduous fruit growing areas. It is the most important mite ...

Crown gall of grape is an important disease in all areas where grapes are grown worldwide, but is particularly severe in regions with cold climates. Formerly designated as Agrobacterium tumefaciens biovar 3, A. vitis, the ...

The grape cane gall maker is one of two Ampeloglypter species which can damage new shoot growth in the spring. This small snout beetle is apparently present throughout eastern and midwestern North America and has caused ...

The grape flea beetle, also known as the steely beetle, is a native insect and occurs in about all states east of the Rocky Mountains and in Canada. It has been found in all grape-growing areas of New York State. At the ...

The grape berry moth, a major pest of cultivated grapes, is native to eastern North America where it originally occurred on wild grapes. Its present range of distribution is the territory east of the Rocky Mountains, ...

Eutypa dieback of grapevines, formerly called “dead arm,” was for many years thought to be caused by the fungus Phomopsis viticola. Recently, however, another fungus, Eutypa armeniacae (imperfect stage: Cytosporina), was ...

The grape cane borer is a wood feeding beetle in the Bostrichidae family that is widely distributed across eastern North America and in Europe. Also known as the apple twig borer, adult beetles tunnel into live grape canes ...

Leafroll is one of the most important virus diseases of grapevine. It occurs in every major grape-growing region of the world. Grapevine leafroll disease can affect all native and Vitis vinifera cultivars, hybrids, and ...