Nick - apple scab is probably the number one nemesis of our organic
apple orcharding efforts here in the Northeast US. I am interested
to hear from you or the group whether you think the Sulfur is
necessary (even the few sprays you used this year)and/or whether you
think adequate control could be obtained via quality compost teas? I
would be very happy with 1 - 2 % infection of my crop but am
unwilling to spray sulfur to get there. Is it feasible, likely or
even desirable to completely eradicate the scab? At what cost (both
menetary and to the micro-ecosystem)?
PS: As an alternative to sulfur, some are showing interest in a mix
of hydrogen peroxide (1%) and apple cider vinegar (to make a
peroxyacetic acid?) as an early season clean-up or post infection
treatment for scab and other fungal diseases. Good chance it knocks
out existing incocula on the leaf, however, so use before CT
application or in the event of an outbreak.
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Received on Thu Jan 22 2004 - 10:51:21 EST