An integrated pest management system was evaluated for Diabrotica undecimpunctata undecimpunctata in snap bean, sweet corn and cucurbit cropping systems in western Oregon. Data from field-level pest scouting was used with economic injury models to reduce pesticide applications, as well as to identify locations of beetle aggregations within the landscape. Aggregations were documented to occur in margins of beans adjacent to sweet corn fields. Trap and kill technologies were developed using semiochemical lures with phagostimulant and insecticide-treated yellow fabrics. Traps were placed in beetle aggregation areas and behavioral analysis used to estimate trap mortality. Strip spraying of beetle aggregations in field margins was also evaluated, and dramatically reduced the total land area receiving insecticide applications.