Tuesday, 19 November 2002
D0440

This presentation is part of : Display Presentations, Section F. Crop Protection Entomology

Biology and alternative controls for blueberry bud mite Acalitus vaccinii in Michigan blueberries

Vicki Morrone and Rufus Isaacs. Michigan State University, Department of Entomology, 201 Center for Integrated Plant Systems, East Lansing, MI

The blueberry bud mite is a pest on blueberry, causing damage to the bud and inhibiting leaf and fruit development. The blueberry variety, Rubel is particularly susceptible, while other varieties can serve as a host but sustain minimal damage. The occurrence of this mite is sporadic in blueberries but once established it is difficult to control. Currently, only one synthetic acaricide, Thiodan (endosulfan), is registered for post-harvest use, but this chemical is under scrutiny due to human safety concerns and the risk of resistance development. Laboratory trials of selective alternative acaricides were conducted, including summer oil and indicate that some alternatives to Thiodan are effective, but further trials are required to assess performance under field conditions. Observations of bud mite biology indicate the potential for alterative control timings and the need to preserve fungal, insect and mite biocontrol agents.

Species 1: Acari Eriophyidae Acalitus vaccinii (blueberry bud mite)
Keywords: blueberry, mite control

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