A column of ants on a vine during the summer may be tending mealybugs because ants feed on the secreted honeydew. Ants can become pests during harvest, when ripe berries are a source of sugar, and they can become a hazard for handpickers. They rarely require control and typically affect a small area of a vineyard.
The MSU IPM Program maintains this site as an access point to pest management information at MSU. The IPM Program is administered within the Department of Entomology, fueled by research from the AgBioResearch, delivered to citizens through MSU Extension, and proud to be a part of Project GREEEN.