Michigan State University Extension announced on May 6 the release of a new fact sheet aimed at helping growers manage ambrosia beetles in apple orchards.
The fact sheet addresses a growing concern for apple producers as increased attacks by ambrosia beetles have been observed in the Great Lakes region over recent years. These pests, which include the black stem borer and maiche borer species found in Michigan, target stressed apple trees and can cause significant damage to orchards.
According to Michigan State University Extension, female ambrosia beetles bore small holes into tree trunks to cultivate fungi that serve as food for their offspring. The new publication outlines signs of infestation, monitoring techniques, and both chemical and non-chemical strategies for protecting vulnerable trees. Black stem borer females are mainly active in early spring, while maiche borer females start flying from early to mid-summer.
The four-page document provides detailed information about seasonal activity patterns of these beetle species and practical recommendations for orchard management. Michigan State University Extension Agriculture addresses challenges in food, health, and the environment through education, research, and outreach to contribute to public service, according to the official website. The organization also maintains facilities such as greenhouses and research farms across Michigan; it collaborates with AgBioResearch scientists from eight MSU colleges for leading research initiatives; it had an enrollment of 3,735 students across programs in fall 2021; it aims to foster a healthy world through sustainable agriculture education; and it extends its presence through major research centers statewide—all according to the official website.
Growers interested in learning more about identifying or controlling ambrosia beetle infestations can access the Managing Ambrosia Beetles in Apple fact sheet directly from Michigan State University Extension.
