Japanese beetles have become the primary insect defoliator of soybeans in Illinois over the past several years, but guidelines for their management are outdated. The relationship between defoliation caused by Japanese beetles and components of soybean yield need to be explored to improve decision making. Additionally, very little is known about natural enemies of Japanese beetles. This study will evaluate the effects of Japanese beetle defoliation on soybean yields. Twenty-four cages will be used examine six levels of defoliation, replicated four times, possibly using one or two treatments to examine timing of infestation in relation to soybean blooming. Additionally, treated vs. untreated...
The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.