University of Nebraska

Department of Entomology

Insecticides for Control of Soybean Aphids in Soybeans

Updated April 13, 2007

The recommended threshold for late vegetative through R5 stage soybeans is 250 aphids per plant (field average) with 80% of the plants infested and populations increasing.

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; 1A = Carbamates, 1B = Organophosphates Group 3 = Sodium channel modulators R = Restricted-Use Product
Mode of Action	Product Name	Common Name	Rate (Formulation/Acre)	Restrictions/Comments
3 R	Asana XL	esfenvalerate	5.8 - 9.6 fl oz	Do not exceed 0.2 lb ai. per acre per season. Do not graze livestock on treated plants. 21 day harvest interval.
3 R	Baythroid 2	cyfluthrin	2.0 - 2.8 fl oz	Suppression only. FIFRA Section 2(ee) recommendation. Maximum of 2.8 fl oz/A may be applied within a 7-day period. Total applications may not exceed 11.2 fl oz per cropping season.
1A R	Furadan 4 F	carbofuran	¼ - ½ pt	Do not make more than 2 foliar applications per season. Do not apply within 21 days of harvest. Do not graze or feed foliar treated forage to livestock or cut for silage or hay.
1B R	Lorsban 4 E	chlorpyrifos	1 - 2 pts	Do not apply more than 6 pints per acre per season. Do not apply last treatment within 28 days before harvest. Do not allow livestock to graze in treated acres or otherwise feed treated forage, hay, or straw to meat or dairy animals.
3 R	Mustang	zeta-cypermethrin	3.4 - 4.3 fl oz	Do not graze or harvest treated soybean forages, straw, or hay for livestock feed. Do not apply more than 0.31 lb per acre per season. 21 day harvest interval.
1B R	Penncap-M	methyl parathion	1 - 3 pts	Do not make more than 2 applications per season. Do not use within 20 days of harvest or grazing.
3 R	Pounce 3.2 EC	permethrin	4 oz	60 day harvest interval. Do not apply more than 0.4 lb a.i. per acre per season. Do not graze or feed soybean forage or hay.
3 R	Proaxis	gamma-cyhalothrin	1.92 - 3.2 fl oz	Use a rate in the lower end of the rate range for early season applications and/or lighter populations. Do not apply within 30 days of harvest or more than 0.48 pints per acre per season.
3 R	Warrior 1.0 EC	lambda- cyhalothrin	3.2 - 3.84 fl oz	Do not graze or harvest treated soybean forage, straw or hay for livestock feed. Do not apply within 45 days of harvest. Do not apply more than 0.48 pints per acre per season.