I have always suspected that, when compared at the same field use
rates, Polyram might be a little less rain-fast than the mancozeb
fungicides. However, I do not have data to prove that. For several
years I compared Polyram and mancozeb fungicides in my test orchards
to see if I could detect
Dave, do you have a read on whether Polyram is a bit less effective
than the mancozeb products against rust?
It's also worth noting that with a 77 day phi for the EBDCs, a harvest
date of 1 Sep means a final application date of 15 Jun. In southern
New England and much of the rest of the nor
Initial evaluations noted that strobilurin fungicides provided only
"fair" control of apple rust diseases, but that was to some extent an
artifact of the way that the strobilurins were initially tested in
the US. When Flint and Sovran were introduced, we initially thought
that we could use the
Hi Con, fair only for rust on the strobilurins -- see:
http://ipmguidelines.org/TreeFruits/content/CH06/default-1.asp
I also wanted to briefly comment on the rest of your post. Of course
you are 'right,' but obviously we are not likely to change it. Same
with the discussion about pesticide r
That is a great point Karl,
We are travelling down the same road in Europe, and we also have fewer
options and more restrictions when it comes to chemical applications.
And oddly enough, the newer chemicals are generally inferior to the
older chemistry, plagued especially with resistance problems.
