RESEARCH ARTICLE t IPM program successful in California greenhouse cut roses

We developed and tested an inte-grated pest management (IPM) pro-gram for the key pests of cut roses, which was based on fixed precision sampling plans, thresholds, biological control, directed sprays of reduced-risk pesticides, and cultural control. This program represented the largest effort to date to implement an IPM program in U.S. floriculture. The bio-logical control of mites was successful at all locations, and pesticide use was generally lower in the IPM green-houses. Future work will concentrate on reducing scouting time, improvin