Anthrachnose

klimbinfool

klimbinfool

Location
magalia california
Anybody have any ideas on subdueing Anthrachnose? Or is it something we are just going to have to live with .It just compounds the problems when dealing with Sycamore trees in our area.

Greg
 
I'm not the biggest expert in this stuff, but mostly I hear about picking up leaves and disposing of them off site--it can overwinter in the leaves if you don't (though this probably won't have much effect, sice the disease can also overwinter on twigs, bark etc., and can blow in from other trees). Usually the trees won't die from anthrac unless they are already in bad shape from other factors. Tattar ("Diseases of Shade Trees") recommends spraying bad cases or aesthetically desirable cases with fungicide at or before bud break, then every two weeks until mid-June and additionally after any prolonged wet weather. So you gotta know which trees need it and sell the spraying when there are no symptoms. Good luck.

Keith
 
Greg,
Alamo is an injectable fungicide. I've always heard of it in relation to treating for oak wilt. You can buy it in Mauget micros or in bulk for macro. it ain't cheap.

keith
 
Another cure (possible) is a chemical known as paclobutrazol (common name=cambistat). This is most commonly used as a growth regulator but was originallly developed as a fungicide. I guess it too is costly, but requires NO injection or spraying. You might check into the Morton Arboretum website. Dr. Gary Watson has done much research using this chemical and may have information on its effectiveness at fungicidal control.

Best of luck!
 
Greg,

What I have always heard, like Keith said, remove the leaf litter and also try to increase air flow surrounding the tree (ie. elevate and clear surrounding underbrush and cut back neighboring trees).

I've also been told to use a fungiside called "Cleary 20/20". (or close). They say bud break, 10 days after and 20 after that. Never tried it since most cases are menial. The tree will sprout new leaves in June anyway.
 
Mark,

You are right on about the cleary 20/20. We use it here in OK on sycamores as well as austrian pines for tip blight. Works pretty well, specially in the pines. We shoot for 14 day intervals.
 
Although I agree with the spraying @ 14-20 day intervals, here in NJ it was close to impossible to perform these applications this spring. By the time it stopped raining, the leaves were hardened off and applications are useless at that point. I am leaning toward the trunk-injections or soil drench for now.

Its kind of crappy to the customer to sell these multi-foliar applications that are contingent on the unpredictable weather.

Treating for Dutch Elm Disease is a good example. Weather providing you send out a spray applicator in a full tyvek to spray this HOT stuff (methoxychlor) on a Elm that is obviously wider than it is tall. Big-time exposure here. Or do you send out a guy to drill holes and inject "antibiotics" that will help the tree for two years? The profit margine and decreased public exposure favores the Doctor with antibiotics.

I did a big flagging Elm at a park this year and we made the newspaper. I don't think the paper would have come out if we were spraying.

Injections are the future gentlemen. Whether we like it or not. There are too many hippie-organic/ chemophobes out there. They love to make problems.

Oh, by the way... I love the smell of Lindane and Cygon.
 
i used dithane T&O wettable powder fungicide mixed with banner maxx liquid fungicide and had some decent results. did not stop it on every tree, but most. this wa a tough year for the anthracnose with all the rains here.
i believe the mix rate for these chemicals is .75lbs dithaneT&O mixed with 6oz banner maxx into 100gal water.
could be mistaken, read the labels to be safest.
 
</font><blockquote><font class="small">In reply to:</font><hr />
...Injections are the future gentlemen. Whether we like it or not. There are too many hippie-organic/ chemophobes out there. They love to make problems...

[/ QUOTE ]


Damn tree huggers.


love
nick
 
It's not so much the tree huggers, but the people that read into every available thing that is bad for you. Most of my customers are so tainted by the media about the harmful effects of pesticides. They most likely have worse chemicals under the kitchen sink. I know I am veering off from the initial post, but so be it. I could write all day on this.
 
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