Boll Weevils in Nature Respond to Grandlure, a Synthetic Pheromone123

Both sexes of Anthonomus grandis Boheman responded in the field to a synthetic pheromone mixture, grandlure. A wick-type formulation of grandlure containing glycerol, water, polyethylene glycol, and methanol was over 80% competitive as an attractant for 7 days with caged, live males fed cotton squares (flower buds) once or twice a week.