Prebloom spray treatment against the overwintering eggs of European red mite on pears reduced populations and prevented an early season build-up. Thus far, Genite-923 is the only material which has given consistent control—at a dosage of 1% pints of 50% emulsion per 100 gallons—combined with lime-sulfur or organic fungicides regularly used for pear scab control.

The above progress report is based on Research Project No. 806.