IPM Threshold Guide for Vegetable Crops
This reference was adapted from the University of Maryland and Delaware Cooperative Extension Filed Crop and Vegetable IPM Pest Management Manuals.
Compiled R. D. Myers 2000; Updated 2018
Compilation and layout assistance by Carol Jelich, Master Gardener, Anne Arundel County
Reviewed by Galen Dively, Terrance Patton, and Sandra Sardenelli, University of Maryland, College Park
Level of pest activity when control action is suggested to prevent economic injury