PEAR MITESdeveloping resistanceto CHEMICALS

摘要

The days of simply spraying the two-spotted spider mite may be waning, even with six miticides available to control them.Dr. Elizabeth Beers advises pear growers to start talking to their chemical represen-tatives about some other way to keep the pests at bay, because the mites are building resistance to nearly allchemicals currently labeled for control.