By Ron Hammond and Andy Michel, Ohio State University Extension entomologists
Over the past decade we have discussed the need for growers to be careful when applying foliar insecticides to their crops because of the potential for harming bees that might be foraging for nectar if the crop or nearby plants are in bloom, and to manage their applications carefully to reduce the possibility of drift.
Recent articles in the popular press and newspapers, including Saturday in the Columbus Dispatch, bring up another possible concern, that being the use of a relatively new class of insecticides, neonicotinoids, which are related to nicotine found in tobacco. In field crops, their main use is as seed treatments, and includes the insecticides clothianidin (Poncho), thiamethoxam (Cruiser), and imidacloprid. Recent studies out of Purdue and labs in Europe suggest that the use of clothianidin as a seed treatment might impact bees, either by causing mortality or more likely affecting their behavior and preventing bees from returning to their hives.… Continue readingRead More »