While I don't know much about Mancozeb, anytime I have used fungicides in my
garden, I've always thought it is better to make sure the fungicide has time
to dry on the plant. If you put it on and then it rains an hour later,
well, I don't know how effective it would be. I like to let the stuff dry
and let the plant soak up the stuff, so it has the chance to help the plant.
With the fungicides I've used, they usually call for repeated applications.
Hopefully, someone will recognize and have more specific info for you.
Good-luck.
Darlene

"Ken Anderson" > wrote in message
...
> Does anyone know if fungicides have to be on the plants for any certain
length
> of time before it rains? Put another way, do fungicides instantly kill
> targetted diseases, or does it take a while? I can't find this info on
the
> Mancozeb label. Thanks.
> Ken
>
>