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Old May 10, 2018   #8
nickel plate
Join Date: Jul 2012
Location: California
Posts: 18

Originally Posted by NathanP View Post
That's probably not CPB. They are a lot more destructive than what those leaves look like, and you should see larvae or eggs under the leaves if it is them. It probably is a more minor pest like tortoise beetles.

It also probably isn't anything to worry about unless the plants are being consumed at a high percentage. Most people worry about catching and destroying every last little pest, without realizing that potato plants can often lose 30-40% of their foliage with about zero loss of yield.
I'm taking your advice as the destruction seems to be staying at a minimum and some of the plants are starting to flower.
I'm not a fan of chemical applications in my garden and so far over the years I've been lucky pest wise. Tomato/horn worms have been the most problematic but finding and removing them is fairly easy.
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