Wisconsin Pest Bulletin, Issue No. 18, November 27

Krista Hamilton, Entomologist, Bureau of Plant Industry/Division of Agricultural Resource Management, Wisconsin Department of Agriculture, Trade and Consumer Protection

Volume 63 Issue No. 18 of the Wisconsin Pest Bulletin is now available at:


PLEASE NOTE: This final Wisconsin Pest Bulletin of 2018 provides a post-growing season summary of prevailing insect and plant disease conditions and related weather. Once again, our sincerest thanks to the many cooperators, farmers, county agents and consultants who contributed their time and valuable information to the survey program this year.

I N S I D E  T H I S  I S S U E:

LOOKING AHEAD:  Fall European corn borer population decreases to 77-year low

FORAGES & GRAINS:  Potato leafhopper counts remain below-threshold this season

CORN:  Corn rootworm beetle survey finds historically low crw pressure again in 2018

SOYBEAN:  Phytophthora root rot a common problem in soybean fields last spring

FRUITS:  Brown marmorated stink bug spreading into western Wisconsin

VEGETABLES:  Late blight less prevalent this year than in 2017

NURSERY & FOREST:  New state record for boxwood blight in Wisconsin

DEGREE DAYS:  Growing degree day accumulations as of November 14, 2018