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Insecticide Treatment Options for Potato Leafhoppers in Alfalfa

Updated March 11, 2013

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.

IRAC Mode of Action Classification:
  • Group 1 = Acetylcholine esterase inhibitors; 1A = Carbamates, 1B = Organophosphates
  • Group 3 = Sodium channel modulators
  • Group 28 = Ryanodine receptor modulators, Diamides
  • un = compound of unknown mode of action
R = Restricted-Use Product
Mode Of
Action
Product
Name
Common
Name
Rate
Formulation/Acre)
Restrictions/Comments
3 R

Ambush 2E, 25W
or 25WP

 permethrin 3.2 - 12.8 fl 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,
Tombstone

 cyfluthrin 0.8 - 1.6 fl oz

PHI 7 days. Pre-grazing interval 7 days.
1A Carbaryl 4L carbaryl 1 qt

PHI 7 days for harvest or grazing. Carbaryl may cause a temporary bleaching of tender alfalfa foliage.
1B, 3 R Cobalt

chlorpyrifos
and cyhalothrin

 7 - 13 fl oz

PHI 7 days for cutting or grazing.
1B, 3 R Cobalt Advanced

chlorpyrifos
and cyhalothrin

 6 - 13 fl oz

PHI 7 days for cutting or grazing.
1B Dimethoate 2.67 dimethoate 0.75 - 1.5 pt

Do not feed livestock on treated crops, threshing or hay treated less than 10 days before harvest or pasture stubble sooner than 10 days after treatment.
1B Dimethoate 400 dimethoate 0.5 - 1.0 pt

PHI 10 days for harvest or pasturing.
1B R Imidan 70-W phosmet 1.0 - 1.33 lbs

PHI 7 days for grazing or cutting for hay.
1B R

Lorsban 4E,
Lorsban Advanced

 chlorpyrifos 0.5 - 1 pts

PHI 14 days for rates of 1 pt/acre. PHI 7 days for rates of 0.5 pt/acre.
1B Malathion 57 EC malathion 2 pts

PHI 0 days.
1B Malathion 8-E malathion 1 - 1.25 pts

PHI 0 days.
3 R Mustang Maxx,
Respect

zeta-
cypermethrin

 2.24 - 4.0 oz

PHI 7 days for seed harvest. PHI 3 days for cutting or grazing.
un Neemix 4.5

azadirachtin

 7 - 16 fl oz

Insect growth regulator.
3 R

Paradigm,
Silencer,
Warrior w/
Zeon Technology

 lambda-
cyhalothrin		 1.92 - 3.2 fl oz

PHI 7 days for harvest of hay. PHI 1 day for forage.
3 R Permethrin 3.2EC permethrin 4 - 8 oz

Over 4 oz, preharvest interval of 14 days.
3 R Pounce 25WP permethrin 6.4 - 12.8 oz

At rates over 6.4 oz, preharvest interval of 14 days.
3 R Proaxis

gamma-
cyhalothrin

 1.92 - 3.2 fl oz

PHI 7 days for harvest of hay. PHI 1 day for forage.
3 R Renounce 20WP cyfluthrin 1 - 2 oz

PHI 7 days. Pre-grazing interval 7 days.
1A Sevin 80 Solupak carbaryl 1 1/4 lbs

PHI 7 days for harvest or grazing.
1B, 3 R Stallion

zeta-
cypermethrin

 5 - 11.75 fl oz

PHI 7 days for cutting, grazing or harvesting of seed.
3, 28 R

Voliam Xpress

lambda-
cyhalothrin and
chlorantraniliprole

 5 - 8 fl oz

PHI 7 days for harvest of hay. PHI 1 day for forage.
3 R Warrior II w/
Zeon Technology		 lambda-
cyhalothrin		 0.96 - 1.6 fl oz

PHI 7 days for harvest of hay. PHI 1 day for forage.