Weather data for Monmouth ME. Forecast values begin September 3, 2010

Key Dates for European Red Mites

Estimated hatch date of overwintered European red mite (ERM) eggs indicating declining efficacy of prebloom oil treatment is
Friday, April 30

Optimum monitoring period for 1st generation ERM:
Friday, May 14 (Petal Fall) to
Tuesday, May 25 (early adults ready to lay eggs for 2nd generation)

Optimum monitoring period for 2nd generation ERM:
Monday, June 14 (nymphs hatched) to
Monday, June 21 (egglaying starts for 3rd generation)

Optimum monitoring period for 3rd ERM generation is:
Friday, July 2 (nymphs hatched) to
Wednesday, July 7 (egglaying starts for 4th generation)