How to manage Colorado potato beetles that survived winter

Image result for colorado potato beetleSeveral different locations in the Red River Valley in the US are experiencing emerging Colorado potato beetles (CPB). Ian MacRae, professor and Extension entomologist at the University of Minnesota, visited a few fields where overwintered beetles are contentedly finding mates and munching young potato plants (some places more heavily than others). After last summer’s battles, many growers might not be happy to see the emergence of these striped harbingers of leafless plants so early in this year. Last year’s high populations and this winter’s mild temperatures have resulted in successful overwintering of lots of CPB in some areas. A couple of locations are also reporting less than satisfactory control from neonicotinoid insecticides applied at plant. MacRae offers some management points to ponder. More