Michigan cherries advice from MSU

Apple rust mite - Aculus schlechtendali (Nalepa)

Adult apple rust mites (ARM) are elongated, triangular, tan in color, and barely discernable with a hand lens (0.2 mm long). ARM also have only 2 pairs of legs, whereas most mites have 4 pairs.

ARM move to trees in spring as soon as leaves open and remain on trees for the rest of the year.


Adult apple rust mites	Rust mite feeding can cause russet-ting on the fruit.

Additional information

For more monitoring information and evaluation of available pesticides:
Michigan Fruit Management Guide
A Practical Guide to Scouting Apple Orchards – a DVD showing how to scout apple orchards.
MSU Diagnostic Services for assistance in pest identification.
MSU Fruit Crop Advisory Team Alert newsletters for current pest/crop conditions.

This information was developed from A Pocket Guide for IPM Scouting in Michigan Apples by David Epstein, Larry J. Gut and George W. Sundin. Purchase this in a pocket-sized guide for reference in the orchard from MSU Extension (publication E-2720).

Site map About us Copyright/linking

05/30/08