University of Nebraska

Department of Entomology

Insecticides for Soil Cutworm Control in Sorghum

Updated May 15, 2000 by ZB Mayo

Economic Threshold:
Treat when 5% of plants are damaged or cut, and larvae are less than 1 inch long.
Cutworms longer than one inch are likely to pupate (i.e. cease feeding) before causing significant additional damage.

This list is not inclusive. See http://www.greenbook.net or other resources for additional registrations.
This information is presented in abbreviated form. Be sure to consult the label for additional information and restrictions.

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IRAC Mode of Action Classification:
Group 1 = Acetylcholine esterase inhibitors; 1B = Organophosphates Group 3 = Sodium channel modulators R = Restricted-Use Product
Mode of Action	Product Name	Common Name	Rate (Formulation/Acre)	Restrictions/Comments
1B R	Lorsban 4 E	chlorpyrifos	1 - 2 pts	Apply with sufficient water for thorough coverage. Do not apply more than three pints of Lorsban 4 E per acre per season. The treated crop is not to be used for forage, fodder, hay, or silage within 30 days after application of one pint per acre, or within 60 days after application of more than one pint per acre. Do not treat sweet varieties of sorghum.
3 R	Warrior 1 EC	lambda- cyhalothrin	1.92 - 2.56 oz (0.12 - 0.16 pts)	Apply as required by scouting, usually at intervals of 5 or more days. Do not apply within 30 days of harvest. The treated crop is not to be used for forage, fodder, hay or silage.
3 R	Baythroid 2EC	cyfluthrin	1.0 - 1.3 fl oz of 2 lb/gal EC	Apply by air or ground equipment in sufficient water for thorough coverage. At this rate, green forage may be fed or grazed on the day of treatment. Allow 14 days between application and harvest of grain or dry forage. May be chemigated by following label directions.
3 R	Asana XL 0.66 EC	esfenvalerate	5.8 - 9.6 fl oz	Apply by ground or air equipment. Do not exceed 0.15 lb./acre/season. Do not apply within 21 days of harvest. This use pattern may not appear on the federal label. See supplemental labeling EPA reg. #353-515 issued in 1998.