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**Tom Wagner** · May 29, 2011

http://www.plantpath.wisc.edu/wivegd...s/potatoeb.gif

Looking at the above link and your photo...I would say you are right about it being early blight.

With your tomatoes the early blight may also spread...lower leaves first as with the potatoes. Sometimes if the weather dries out the early blight does not spread as much.

I am the wrong person to ask about control....I don't use chemicals and I don't even use organic sprays.

I like to see natural resistance to early blight and late blight and that is why I am focusing on lines like my Skykomish and Healthy Colors, Bouncing Betties, etc. with tomatoes.

I also have good res. to early blight in potatoes especially those that are dual LB/EB res.

One reason I don't worry about the early blight is that I have so many plots that if one plot is bad ...maybe another plot is untouched. But then again I make note of any variety that tolerates the fungals better than others.

Most of the time tomatoes and potatoes will tolerate a certain amount of early blight without too much yield damage. Unsightly...yes.

May 29, 2011	#2
Tom Wagner Crosstalk™ Forum Moderator Join Date: Aug 2006 Location: 8407 18th Ave West 7-203 Everett, Washington 98204 Posts: 1,157	http://www.plantpath.wisc.edu/wivegd...s/potatoeb.gif Looking at the above link and your photo...I would say you are right about it being early blight. With your tomatoes the early blight may also spread...lower leaves first as with the potatoes. Sometimes if the weather dries out the early blight does not spread as much. I am the wrong person to ask about control....I don't use chemicals and I don't even use organic sprays. I like to see natural resistance to early blight and late blight and that is why I am focusing on lines like my Skykomish and Healthy Colors, Bouncing Betties, etc. with tomatoes. I also have good res. to early blight in potatoes especially those that are dual LB/EB res. One reason I don't worry about the early blight is that I have so many plots that if one plot is bad ...maybe another plot is untouched. But then again I make note of any variety that tolerates the fungals better than others. Most of the time tomatoes and potatoes will tolerate a certain amount of early blight without too much yield damage. Unsightly...yes.