Ok many thanks Leslie for the track
I googled the terms and landed to
www.opep.cahttp://www.opep.ca
www.pesticidesafety.cahttp://www.pesticidesafety.ca
and finally
http://www.omafra.gov.on.cahttp://www.omafra.gov.on.ca/
to get the whole story
Best regards
Jean Marc Jourdain
De :
I will also weigh in here, being a long-time proponent of delayed-dormant oil
sprays against orchard pests. This is from my March 28 article in Scaffolds:
The following advice developed from Paul Chapman's original research is
essentially unchanged from what I print every spring, which shows
Hi Art,
Thanks for your newsletter. Just wondering about the ScaffoldsMD - I
know what it is, but wondered how you make the files - what program,
what size, etc. I see that Penn State is also providing mobile
versions.
Any idea how many growers are reading yours on smartphones? Do you need
Greetings Rye,
I believe this term is a carry over from a time when pest management
applications would 'cover' the commodity in a blanket of spray
following the critical petal fall application. This PF event
typically occurs at roughly 80% of the petals falling from a variety
such as
I agree with Peter that it's an old term but always took it to mean codling
moth sprays, which back in the old days were hard insecticides that killed
everything. In Washington most years three were needed, occasionally four.
The term covered is also used to numerate the number of days your
I tend to agree the term 'cover' is becoming archaic in regards to modern fruit
growing -
I did look thru some historical references I have handy and in the 1936
Michigan spray calendar the 'first cover' is applied 10 days after petal-fall,
with the 'second cover' applied 10 days after the
