The grape cane girdler is one of two Ampeloglypter species which can attack new shoot growth in the spring. It has been reported from throughout the midwestern and eastern United States. Originally this species was described ...

The grape rootworm (abbreviated GR) is a native species of leaf beetle that occurs from the Atlantic Seaboard states to North Dakota, Nebraska, Kansas, and Texas. The wild hosts of this pest are grapes (Vitis spp.), Virginia ...

Grape tumid galls, also called grape tomato galls, are caused by larvae of a small fly known as the grape tumid gallmaker (GTG). This pest is native to the northeastern United States and southeastern Canada. It infests ...

Downy mildew, a fungal disease native to North America, attacks most species of wild and cultivated grape. The disease was inadvertently introduced into European vineyards in the late 1870’s where it devastated the European ...

Botrytis bunch rot and blight of leaves, shoots and blossom clusters, also called gray mold, occurs throughout the viticultural world. The fungus causing the disease grows and reproduces on senescent or dead plant tissue. ...

Three leafhopper species can be found feeding on grapes in the Northeast: Erythroneura comes (Say), commonly known as the grape leafhopper (GLH), E. tricincta Fitch, the threebanded leafhopper, and Empoasca fabae (Harris), ...

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 ...

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 ...

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 ...