Rhytisma Ulmi?

View previous topic View next topic Go down

Rhytisma Ulmi?

Post  timahlen on Mon May 03, 2010 3:12 pm

Several of my elm trees have become infected a fungal disease that looks exactly like this image of Rhytisma Ulmi on Wikipedia.

http://images.google.com/imgres?imgurl=http://upload.wikimedia.org/wikipedia/en/thumb/b/bb/Arno_leaf_fungal_disease_1.jpg/140px-Arno_leaf_fungal_disease_1.jpg&imgrefurl=http://en.wikipedia.org/wiki/Ulmus_%27Arno%27&usg=__wvofIKA47hHIuQ7TjSYv5Y0a13Q=&h=187&w=140&sz=12&hl=en&start=251&sig2=ZBSV-WfvIGw00V8Y4lLTlw&um=1&itbs=1&tbnid=tgbG0Y9m-UAH8M:&tbnh=102&tbnw=76&prev=/images%3Fq%3Dfungal%2Bdiseases%2Belm%2Btree%26start%3D234%26um%3D1%26hl%3Den%26sa%3DN%26rlz%3D1G1GGLQ_ENUS323%26ndsp%3D18%26tbs%3Disch:1&ei=0tbeS93iE4HIMuen_agH

Copper fungicide has not slowed it down yet, and it is eating up new foliage as soon as it comes out. Any ideas on how to treat it?

Tim Ahlen
Zone 8a
Dallas, TX

timahlen
Member


Back to top Go down

Rhytisma Ulmi?

Post  Guest on Tue May 04, 2010 12:33 am

I don't recognise this one but as a fungal disease you might want to try a very dilute solution of lime sulphur. I have found this very good at controlling both blackspot and leaf gall on English Elm.You will have to wait till next Spring as this seems to be the only time it has any effect. A dilution of 30 parts water to 1 part lime sulphur is what I use.

Guest
Guest


Back to top Go down

Re: Rhytisma Ulmi?

Post  JimLewis on Tue May 04, 2010 1:08 pm

I'd echo what Will says. The bale on the lime sulfur shuld give you the correct dilution for use as a fungicide.

I use it regularly on juniper for various rusts.

_________________
Jim Lewis - lewisjk@windstream.net - Western NC - People, when Columbus discovered this country, it was plumb full of nuts and berries. And I'm right here to tell you the berries are just about all gone. Uncle Dave Macon, old-time country musician

JimLewis
Member


Back to top Go down

Re: Rhytisma Ulmi?

Post  Sponsored content Today at 4:20 pm


Sponsored content


Back to top Go down

View previous topic View next topic Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum