University of Nebraska

Department of Entomology

Insecticides for Control of Aphids in Alfalfa

Updated February 23, 2006 by Keith Jarvi

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 PHI = pre-harvest interval
Mode of Action	Product Name	Common Name	Rate (Formulation/Acre)	Restrictions/Comments
3 R	Ambush 2E, 25W or 25 W WP	permethrin	3.2 - 12.8 oz	At 6.4 oz or less, no preharvest interval. Over 6.4 oz, preharvest interval of 14 days.
3 R	Arctic 3.2EC	permethrin	2 - 8 oz	At 4 oz or less, no preharvest interval. Over 4 oz, preharvest interval of 14 days.
3 R	Baythroid XL	cyfluthrin	1.6 - 2.8 oz	For pea aphid and blue alfalfa aphid. Preharvest interval of 7 days. Suppression of cowpea aphids.
1B	Cythion 5	malathion	1 - 2 pts	Rate for pea aphid at 1 pt; for spotted alfalfa aphid at 1.5-2.0 pts. No preharvest interval.
1B	Cythion 8	malathion	1.25 - 1.5 pts	No preharvest interval.
1B	Dimethoate 4E	dimethoate	0.5 -1 pt	Preharvest interval of 10 days.
1B	Dimethoate 5 lb	dimethoate	6.4 - 12.8 oz	Preharvest interval of 10 days.
1A R	Furadan 4F	carbofuran	0.5 -1 pt	For pea aphid and blue alfalfa aphid. At 0.5 pts, preharvest interval of 7 days. At 1 pt, preharvest interval of 14 days.
1B R	Imidan 70-WSB + Dimethoate 4E	phosmet + dimethoate	1.3 lbs + 0.25 - 0.5 pt	Preharvest interval of 10 days.
1A R	Lannate LV	methomyl	1.5 - 3 pts	No preharvest interval. For grazing or feed, wait 7 days.
1A R	Lannate SP	methomyl	1 lb	No preharvest interval. For grazing or feed, wait 7 days.
1B R	Lorsban 4E	chlorpyrifos	1 - 2 pts	For pea aphid and blue alfalfa aphid. At 1 pt, preharvest interval of 14 days. Over 1 pt, preharvest interval of 21 days.
1B	Malathion 57EC	malathion	1.5 - 2.25 pts	For pea aphid and spotted alfalfa aphid. No preharvest interval.
3 R	Mustang Max	zeta-cypermethrin	2.24 - 4.0 oz	PHI 3 days cutting or grazing and 7 days harvesting seed. Aphid control may be variable depending on species and plant relationships.
1B R	Penncap-M	methyl parathion	1.5 - 3 pts	Rate for pea aphid at 2 - 3 pts; for blue alfalfa aphid at 1.5-2.0 pts. Preharvest interval of 15 days.
3 R	Permethrin 3.2EC	permethrin	2 - 8 oz	At 4 oz or less, no preharvest interval. Over 4 oz, preharvest interval of 14 days.
3 R	Pounce 3.2E	permethrin	2 - 8 oz	For pea aphid, blue alfalfa aphid and green peach aphid. At 4 oz or less, no preharvest interval. Over 4 oz, preharvest interval of 14 days.
3 R	Pounce 25WP	permethrin	3.2 - 12.8 oz	For pea aphid, blue alfalfa aphid and green peach aphid. At 6.4 oz or less, no preharvest interval. Over 6.4 oz, preharvest interval of 14 days.
3 R	Pounce WSB	permethrin	0.05 - 0.2 lb	For pea aphid, blue alfalfa aphid and green peach aphid. At 0.1 lb or less, no preharvest interval. Over 0.1 lb, preharvest interval of 14 days.
3 R	Proaxis	gamma-cyhalothrin	2.56 - 3.84 oz	PHI - 1day forage, 7 days hay.
3 R	Silencer	lambda- cyhalothrin	2.56 - 3.84 oz	Preharvest interval of 1 day for forage, 7 days for hay.
3 R	Taiga Z	lambda- cyhalothrin	2.56 - 3.84 oz	Preharvest interval of 1 day for forage, 7 days for hay.
3 R	Warrior	lambda- cyhalothrin	2.56 - 3.84 oz	Preharvest interval of 1 day for forage, 7 days for hay.