Honey bee colonies for operations with 5 or more colonies in Iowa as of April 1, 2018, totaled 45,000 colonies. This is 275 percent above the 12,000 colonies on April 1 last year, and 10 percent above the 41,000 colonies last quarter.
Varroa mites were the number one stressor for operations with 5 or more colonies during each of the 6 quarters surveyed. The April-June 2018 quarter showed varroa mites affected 12.7 percent of Iowa’s honey bee colonies, which is the second lowest level in the past 6 quarters. Other Pests and Parasites, Pesticides, and Other Causes categories saw substantial increases this quarter.
Source: United States Department of Agriculture, National Agricultural Statistics Service. Upper Midwest Regional Field Office · 210 Walnut Street Ste 833 · Des Moines IA 50309. August 1, 2018.