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Editor’s note: This article is from the archives of the MSU Crop Advisory Team Alerts. Check the label of any pesticide referenced to ensure your use is included.
Beetles
collected from Arrowhead Viburnum in St. Clair County last August were
confirmed by Jim Zablotny and the USDA Systematic Entomology Laboratory
to be Pyrrhalta viburni (Paykull), the Viburnum leaf beetle (Coleoptera: Chrysomelidae). This represents a new state record for Michigan.
We
are very interested in knowing if this beetle occurs elsewhere in
Michigan, so please send in any beetles or larvae you find feeding on
Viburnum.
An adult viburnum leaf beetle. Photo credit: P. Weston, Cornell University, ForestryImages.org
May 11, 2018 | Bert Cregg | Winter injury on many different plants is visible, and gypsy moth, white pine weevil adults, ticks, stink bugs and boxelder bugs are active.
May 8, 2018 | Heidi Lindberg | The new respirator requirements for the updated Worker Protection Standard requires growers complete a respirator fit test annually.
Suleiman Bughrara, and Ron Calhoun, Department of Crop and Soil Sciences, Michigan State University | Bentgrass species are native to western Europe, are the most widely used coolseason grass for golf courses, putting greens, tees and closely mowed fairways in the United State. The genus Agrostis comprises more than 220 species. Four are discussed below.
David Smitley, Michigan State University Department of Entomology, and Deborah G. McCullough, Michigan State University Departments of Entomology and Forestry | Guidelines for homeowners with hemlock trees infested with hemlock woolly adelgid.
David Smitley, Michigan State University Department of Entomology; Diane Brown and Erwin Elsner, MSU Extension; Joy N. Landis, MSU IPM; Paula M. Shrewsbury, Univ. of Maryland Department of Entomology; and Daniel A. Herms, Ohio State University Department of Entomology | “Protecting and enhancing pollinators in urban landscapes for the US North Central Region” provides information for landscapers and gardeners who want to attract pollinators and protect them during pest management tactics or pesticide applications.
Curt Peterson , and Randy Heatley | Flowering crabapples are among the most popular ornamental trees. Few woody plants offer so many all-season values as these trees.
