I felt lucky to have the spray last 24 hours before the next rain.
What do commercial growers do in these conditions? >><BR><BR>
As long as the spray has time to dry before it rains, it will be effective. If
it rains every day, you should shorten the interval before the next spray.
I would suggest getting a spray guide from your county extension agent. If I
remember correctly, the first three sprays after bloom should be at one week
intervals, then two weeks after thqt.
John C. Schmid