Mark,
The rule I use, which works with most of my pesticides is that once
the spray is dry it should be as rainfast as it is going to get. Of
course there are exceptions to this rule which will be noted on the
label. It may say rainfast one hour after application or some number.
From what I have read though on your particular pesticide, Delegate,
it is very rainfast and probably follows the once it's dry it's
rainfast. If the humidity was not too high, I am assuming it was dry
on the surface by the time the rain hit so I bet your fine. Could be
wrong though!
Nick Lucking
Cannon Valley Orchard
Cannon Falls, MN
On Jun 15, 2010, at 2:33 PM, Mark Angermayer wrote:
Apple-Crop: Scaffolds 6/14Today, the forecast was supposed to be
clear of
rain. I needed to get a spray on peaches. I applied Delegate at
the full
rate. About 15 minutes afterward, it rained about 1/4".
My question - I know a locally systemic material like spinosad is
supposed
to be very resistant to wash off, but how long does it take for
enough of it
to be absorbed in the tissues to become rainfast? Was this a
wasted spray?
Thanks,
Mark Angermayer
Tubby Fruits
Bucyrus KS
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