How much rain does it take to wash off fruit tree spray?

Fruit tree insecticide and fungicide can tolerate some rain without washing off, but there is a limit. Retired UT Extension Agent Mike Dennison talks about the thresholds and about if lawn irrigation will wash it off.
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Related Videos:
Spraying Peach Trees
Spraying Fungicide

Related Resources:
Disease and Insect Control on Home Fruit Plantings
Fruit Spray Schedules for the Homeowner
Managing Pests in Home Fruit Plantings