RT Journal Article SR Electronic T1 Establishing Monitoring Routines and Action Thresholds for a Landscape IPM Service JF Arboriculture & Urban Forestry (AUF) FD International Society of Arboriculture SP 88 OP 93 DO 10.48044/jauf.1991.025 VO 17 IS 4 A1 Ball, John A1 Marsan, Paul YR 1991 UL http://auf.isa-arbor.com/content/17/4/88.abstract AB Integrated pest management (IPM) has become an important part of pest management services. However, many IPM programs are in name only, since they lack monitoring routines and action thresholds for even their most common pests. This paper discusses basic concepts of monitoring and suggests guidelines for establishing action thresholds.