North American Fruit Explorers mailing list at ibiblio

[<dmnorton@royaloakfarmorchard.com>]

I did understand that you did not want to mix captan and sulfur, but they 
did slightly mix on the overspray to the other tree.  As you state, it 
probably is no big deal.  Plum curculio start to emerge as soon as daytime 
AND evening temperatures exceed 60 degrees F.  They will begin to move 
especially when a light, misty rain or humid night occurs with spring 
warming trends.  I have trapped no codling moth or plum curculio so far this 
season.  Last season our biofix on codling moth was May 10.  It's been too 
cool for many pests to emerge.  The typical phenology time for plum curculio 
sprays to begin is petal fall, but since the nights have been so cool, the 
timing this season ids going to be off.  That's why it's a good idea to use 
degree day models instead of tree phonology to time sprays.

Dennis Norton
Royal Oak Farm Orchard, Zone 5
http://www.royaloakfarmorchard.com
http://www.theorchardkeeper.blogspot.com
http://www.revivalhymn.com
----- Original Message ----- 
From: "Mark Dorogi" <mddorogi@comcast.net>
To: <dmnorton@royaloakfarmorchard.com>; "'North American Fruit Explorers'" 
<nafex@lists.ibiblio.org>
Sent: Thursday, May 15, 2008 8:51 PM
Subject: Re: [NAFEX] Captan/Sulfur


> I started the discussion...I didn't WANT to mix captan and sulfur, but I 
> ran
> out of captan and so switched to sulfur.  I rinsed the sprayer first but
> since some trees are close together, there was some small amount of
> overspray and some branches got some of each.
>
> No big deal, I'm sure.
>
> I did manage to get in my petal fall spray in tonight.  The weather is
> funny, it has been cool. There are small apples, but too small yet to bag.
> I don't see any curculio; I think it has been too cool for them to emerge
> yet.
>
> Thanks for all the comments.
>
>
> Mark
> Southeast MI
>
> -----Original Message-----
> From: nafex-bounces@lists.ibiblio.org
> [mailto:nafex-bounces@lists.ibiblio.org] On Behalf Of
> dmnorton@royaloakfarmorchard.com
> Sent: Thursday, May 15, 2008 9:15 AM
> To: North American Fruit Explorers
> Subject: Re: [NAFEX] Captan/Sulfur
>
> Mark,
>
> Yeah, you are right,  but combinations of captan and sulfur can cause
> necrotic spotting on leaves of susceptible varieties (e.g., Jonathan,
> MacIntosh), so I usually tell growers not to mix the two.
> Captan is more effective on scab than sulfur anyway, so I'm with 
> you....I'm
> not sure why anyone would want to do this anyway.
>
> Dennis Norton
> Royal Oak Farm Orchard, Zone 5
> http://www.royaloakfarmorchard.com
> http://www.theorchardkeeper.blogspot.com
> http://www.revivalhymn.com
> ----- Original Message ----- 
> From: "Mark & Helen Angermayer" <hangermayer@isp.com>
> To: <dmnorton@royaloakfarmorchard.com>; "North American Fruit Explorers"
> <nafex@lists.ibiblio.org>
> Sent: Wednesday, May 14, 2008 5:11 PM
> Subject: Re: [NAFEX] Captan/Sulfur
>
>
> > Dennis,
> >
> > The Michigan tree fruit spray guide shows Captan and sulfur compatible.
> > Captan is sulfur based, so one could probably overdo it by adding too 
> > much
> > sulfur to the Captan (I'm not sure why anyone would want to do this
> > anyway)
> > but the list shows it is compatible.  Are you sure your not thinking of
> > Lime
> > Sulfur which is incompatible because of the alkalinity?  The spray guide
> > also shows sulfur is fully compatible with the organophosphates including
> > Malathion.
> >
> > Mark
> > KS
> >
> > ----- Original Message ----- 
> > From: <dmnorton@royaloakfarmorchard.com>
> > To: "North American Fruit Explorers" <nafex@lists.ibiblio.org>
> > Sent: Wednesday, May 14, 2008 2:46 PM
> > Subject: Re: [NAFEX] Captan/Sulfur
> >
> >
> > > I know that you cannot mix Captan and Sulfur, but you can mix Captan and
> > > Malathion, which are 2 of the products in Bonide's Fruit Tree Spray.  My
> > > rule of thumb is "When in doubt, don't!"  But to be correct, try the jar
> > > test by mixing the appropriate rates in a quart jar to test
> > > compatibility.
> > > Then spray some on a test tree or part of a tree to see if there are
> > > phytotoxicity issues.
> > >
> > > Dennis Norton
> > > Royal Oak Farm Orchard, Zone 5
> > > http://www.royaloakfarmorchard.com
> > > http://www.theorchardkeeper.blogspot.com
> > > http://www.revivalhymn.com
> > > ----- Original Message ----- 
> > > From: "Mark Dorogi" <mddorogi@comcast.net>
> > > To: "'North American Fruit Explorers'" <nafex@lists.ibiblio.org>
> > > Sent: Tuesday, May 13, 2008 9:20 PM
> > > Subject: Re: [NAFEX] Captan/Sulfur
> > >
> > >
> > > > Windy here too.  I'm a little behind on my fungicide spray.  It's 
> > > > petal
> > > > fall
> > > > time, it's supposed to rain again, and I haven't had time to do a 
> > > > petal
> > > > fall
> > > > spray yet :(
> > > >
> > > > Question. What about the combination of sulfur and malathion?  I 
> > > > gather
> > > > that
> > > > they shouldn't be tank mixed, is that correct (the respective labels
> > have
> > > > no
> > > > information either way).
> > > >
> > > > Can they be sprayed separately a few days apart?
> > > >
> > > >
> > > > Mark
> > > >
> > > > -----Original Message-----
> > > > From: nafex-bounces@lists.ibiblio.org
> > > > [mailto:nafex-bounces@lists.ibiblio.org] On Behalf Of William C.
> > > > Garthright
> > > > Sent: Monday, May 12, 2008 10:17 PM
> > > > To: dmnorton@royaloakfarmorchard.com; North American Fruit Explorers
> > > > Subject: Re: [NAFEX] Captan/Sulfur
> > > >
> > > > Thanks for the info!
> > > >
> > > > Although the Mancozeb I found isn't rated for apples, I'd forgotten
> > > > that
> > > > I did find some Immunox (myclobutanil) which is. So I do have another
> > > > choice, in addition to Captan.
> > > >
> > > > But I'm having a hard time finding a day calm enough to spray. This is
> > > > Nebraska, after all. :-)
> > > >
> > > > Bill
> > > > Lincoln, NE (zone 5)
> > > >
> > > > -- 
> > > > He who fights with monsters might take care lest he thereby become a
> > > > monster. And if you gaze for long into an abyss, the abyss gazes also
> > > > into you. - Friedrich Nietzsche
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