Abstract: Action thresholds were evaluated for beet armyworm, Spodoptera exigua (Hübner) in tomato. Insecticide efficacy data was used to develop new thresholds to compare to current standards. Commercially used thresholds are 1 beet armyworm larvae per 6 plants before fruit set and presence after fruit formation. Data taken from summer 2004 field trials at the Coastal Plains Experiment Station in Tifton, Ga. suggest an action threshold of 1 larvae per 20 plants for the entire season would be economically viable. This threshold was based on an estimated level of 5% yield loss. Summer 2005 field trials will evaluate this new proposed threshold and test it against the commercial standards. Scouting will include whole-plant inspections for all Lepidopteran larvae. Yield will be based on weight and number of marketable fruit.