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• <br /> 1 <br /> In short, while strong community sentiment existed to reduce <br /> I pesticide application, the same community had selected trees that would <br /> 1 almost certainly require frequent pesticide applications to maintain in an <br /> acceptable condition. This left municipal managers between the classic <br /> 1 "rock" and "hard place ", unable to satisfy both expectations. <br /> s <br /> Just a few blocks outside of the downtown area, locust trees (which <br /> were much better adapted to local climate and soils) were growing in a <br /> 1 healthy, pest -free state. No doubt there also were many other possible <br /> r <br /> I choices that would have provided shade and community enhancement <br /> without a predisposition to pest problems that would necessitate pesticide t <br /> 1 treatments to manage. . <br /> On the outskirts of town, I saw another illustration of cultural or ' <br /> biological control, this one in roadside IVM. A homeowner who had placed <br /> 1 "PLEASE NO SPRAY' signs at either end of his property's road frontage <br /> also had planted the roadside backslope with a vigorous, low- growing <br /> I ground cover that had successfully out - competed other vegetation. Far <br /> i from creating a problem for road maintenance crews, he had provided a <br /> solution, at least for the short space of his own frontage. <br /> While this specific property owner's example probably could not be <br /> 1 <br /> I successfully applied on a large scale, the principles upon which it is based <br /> hold a valuable key for road and highway vegetation managers seeking <br /> 1 means to implement IVM principles. To the extent that well- adapted, <br /> 1 desirable plant communities can be discovered and established within the <br /> right -of -way, the need for high- volume, chemically- intensive methods also <br /> 1 should be reduced. <br /> g <br /> 1 9 <br />