The larvae of Colorado Potato Bugs are orangish brown with two rows of black dots down the side. See the pic.
I try to minimize the chemicals I use; I did battle with fingers, then a cordless vacuum. That actually worked well for a while (small patch, took me about 10 minutes to go through).
But I got busy with work, couldn't get to it for a couple weeks and the population took off and a few of the plants where approaching 40% leaf loss. Some rotenone took care of them nicely before the larvae pupated.
Carbaryl (Sevin) is also recommended. Might be a good idea to be ready to switch year-to-year if you don't see one being that effective.
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Today's Featured Article - The Fordson F Ignition System - by Anthony West. A fellow restorer contacted me earlier this year asking for some help and advice on a model F that he was restoring. He had over a period of months spent a fair amount of his hard earned cash on replacement parts for the old "trembler" ignition. Sadly though all his efforts seemed to be a waste of time and money as he still couldn''t get the temperamental old thing to run correctly!! If i said that this was a little frustrating for him that would be "conservative" in fact the problem had reduce
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