In fact, the AMF population has remained low, as captures on unbaited monitoring spheres currently average 1 AMF per trap. Because of this, growers should pay particular attention to capture levels on traps in early cultivars, and spray accordingly. Most orchards receiving either a full oil program or an early-season miticide remain free of significant mite buildup, despite the blazing temperatures of recent weeks. A few growers have spot-treated areas of perennial concern, and bronzing has been observed on the usual suspects, such as Red and Golden Delicious. There are no simple solutions on summer mite management, as use of available materials may impact buildup of predators, lead toward pest resistance, or be incompatible with summer disease management tools.
Most orchards remain remarkably clean, considering the pressure from first-generation adults.
Studies in New York suggest that there is little advantage to be gained by treating the third generation of LM, as the majority of damage appears to be caused by feeding of the second-generation miner larvae. Healthy Fruit is written by Dan Cooley, Ron Prokopy, Starker Wright, Wes Autio, and Duane Greene except where other contributors are noted. E dited by Dan Cooley. Publication is funded in part by the UMass Extension Agroecology Program, grower subscriptions, and the University of Massachusetts IPM Program. A text version can be e-mailed to you if you contact Doreen York .