[Market-farming] Early Blight

Bill Shoemaker wshoemak at illinois.edu
Sun May 31 10:40:06 EDT 2009


I think the first thing to do is make sure its early blight. One of the great features of Hi-Tunnels is that, because the leaves don't get wet, foliar blight potential goes way down. In fact, I've never seen foliar blight (early, late, septoria) in a Hi-Tunnel. The reason why it shouldn't happen is that the fungal spores need the leaves to be wet for a significant period of time before the spores can germinate and set up an infection on the leaf. We get early blight routinely in the field, but never in the tunnels. Is there someone you could call on the verify that it is early blight?

Bill



---- Original message ----
>Date: Sun, 31 May 2009 06:51:10 -0700 (PDT)
>From: jay sleichter <jaysleichter at yahoo.com>  
>Subject: [Market-farming] Early Blight  
>To: market-farming at lists.ibiblio.org
>
>   I think I am starting to see some signs of Early     
>   Blight in my High Tunnel tomatoes.  What are my      
>   options? I was planning on removing any and all      
>   leaves  that look infected and spray with a          
>   fungicide every 7-10 days.  What else should I do?   
>                                                        
>   Thanks                                               
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William H Shoemaker, UI-NRES
Sr Research Specialist, Food Crops
St Charles Horticulture Research Center
535 Randall Road  St Charles, IL  60174
630-584-7254; FAX-584-4610


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