Integrated Pesticide Management. Chemical Trespass/Herbicide, 1995

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r yourself of expert assistance funded by foundations or public funds. Much of the most useful information we have used to make IPM work for us has come from these sources. The guidelines and matrix, above, are based on material given by Dr. William Olkowski in a seminar sponsored by Lane County in 1980. Much additional information that we have used to make theory into a reality originated at Washington State University and the Entomology, Agricultural Chemistry, Horticulture and Forestry Departments of Oregon State University; often via the agricultural extension program. Low cost, State sponsored re- certification programs for pesticide applicators now routinely feature pres- entations promoting the IPM approach and /or specific alternative controls. Manufacturers also may provide assistance, especially if it can be combined with research and development or product promotion opportunities. We are currently engaged in a joint controlled experiment with the Biosis company of Palo Alto, California and the Entomology Department of OSU evaluating the effectiveness of nematodes for control of root weevil infestations in Rhododendrons. Our only significant cost has been a minimal investment of staff time. Sharing information with other agencies using IPM methods, especially those in the same community or region, also should be helpful. Your problems will be similar, of course, and sharing effective methods can lower costs and les- sen development /implementation time for both groups. If others have already found a solution to your problem, there is no need to "re- invent the wheel ". On the other hand, some IPM control strategies are very site or micro - climate specific and efficacy should be verified by small -scale testing under actual operational conditions prior to comprehensive use and /or abandonment of cur- rently used effective controls.