Updated March 2, 2006 by Keith Jarvi
Economic Threshold:
Consider treatment if second cutting alfalfa has not started
to green up 3 to 5 days after harvest of the first cutting and
6 or more larvae and/or adults are found per crown.
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.
For more information about the biology and management of the
alfalfa weevil,
consult NebGuide G94-1208-A, Managing
the Alfalfa Weevil and NebGuide G95-1263-A, When to Sample for Alfalfa Weevil.
| IRAC Mode of Action Classification: | ||||
| ||||
| Mode of Action |
Product Name |
Common Name |
Rate (Formulation/Acre) |
Restrictions/Comments |
|---|---|---|---|---|
| |
||||
| 3 R | Ambush 2E, 25W or 25WP |
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 | 4 - 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 | Preharvest interval of 7 days. |
| 1B R | Chlorpyrifos 4E | chlorpyrifos | 1 - 2 pts | At 1.0 pt, no grazing or harvest for 14 days. Above 1.0 pt, no grazing or harvest for 21 days. |
| 1B R | Imidan 70-WSB | phosmet | 1.3 lbs | Preharvest interval of 7 days. |
| 1B R | Lorsban 4 E | chlorpyrifos | 1 - 2 pts | At 1.0 pint, preharvest interval of 14 days. Over 1.0 pint, preharvest interval of 21 days. |
| 1B R | Methyl Parathion 4E | methyl parathion |
1 pt | Preharvest interval of 15 days. |
| 3 R | Mustang Max | zeta- cypermethrin |
2.24 - 4.0 oz | 3 days preharvest interval. |
| 1B R | Nufos 4E | chlorpyrifos | 1 - 2 pts | At 1.0 pt, no grazing or harvest for 14 days. Above 1.0 pt, no grazing or harvest for 21 days. |
| 1B R | Penncap-M | methyl parathion |
2 - 3 pts | Preharvest interval of 15 days. |
| 3 R | Permethrin 3.2EC | permethrin | 4 - 8 oz | At 4 oz or less, no preharvest interval. Over 4 oz, preharvest interval of 14 days. |
| 3 R | Pounce 3.2 E | permethrin | 4 - 8 oz | At 4 oz, no preharvest interval. Over 4 oz, preharvest interval of 14 days. |
| 3 R | Pounce 25 WP | permethrin | 6.4 - 12.8 oz | At 6.4 oz, no preharvest interval. Over 6.4 oz, preharvest interval of 14 days. |
| 3 R | Pounce WSB | permethrin | 0.1 - 0.2 lb | At 0.1 lb, no preharvest interval. Over 0.1 lb, preharvest interval of 14 days. |
| 3 R | Proaxis | gamma- cyhalothrin |
2.56 - 3.84 oz | Preharvest interval of 1 day for forage, 7 days for 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. |
