A key pest can be an insect, mite, disease, nematode or weed that frequently results in unacceptable damage and thus typically requires a management action. Key pests vary from one region to the next. Key pest status is dependent on action thresholds set for the pest. For example, cutworms may be a key pest on high-visibility athletic fields, but not on adjacent lawn areas where the typical level of cutworm damage is very tolerable.