Insecticide Treatment Options for Spider Mites in Field Corn

Last Updated on February 15, 2017

Economic Threshold

Go to: https://www.greenbook.net or other resource for additional registrations.
*Consult product label for specific information and restrictions.

IRAC Mode of Action Classification:
  • Group 1 = Acetylcholine esterase inhibitors; 1B = Organophosphates
  • Group 3 = Sodium channel modulators
  • Group 10 = Mite growth inhibitors; 10A = Hexythiazox, 10B = Etoxazole
  • Group 12 = Inhibitors of oxidative phosphorylation, distuptors of ATP formation (inhibitors of ATP synthase); 12C = Propargite
  • Group 23 = Inhibitors of lipid synthesis
R = Restricted-Use Product

Mode Of
Action
Product
Name
Common
Name
Rate
(Formulation/Acre)
Restrictions/Comments
3 R Brigade 2EC,
Discipline 2EC,
Fanfare 2EC,
Sniper,
Tundra EC		 bifenthrin 5.12-6.4 fl oz PHI 30 days. Do not graze livestock in treated areas or cut treated crops for feed within 30 days of the last application. Do not make aerial or ground applications to corn if heavy rainfall is imminent. Apply a minimum of 2 gallons of finished spray per acre by aircraft or 10 gallons with ground equipment.
12C R Comite propargite 32-48 fl oz PHI 30 days for harvest. PHI 30 days for grazing or cutting for silage. Ensure application is made only when leaves are dry. Treat early when corn is small enough (3-4 ft) to allow good coverage. Two gallons per acre minimum spray volume by air and 20 gallons per acre minimum spray volume by ground. May be applied once per year.
12C R Comite II propargite Early application of
18 fl oz followed by
Mid-Late season application
of 36 fl oz OR
Single application of
36-54 fl oz		 PHI 30 days for harvest. PHI 30 days for grazing or cutting for silage. Ensure application is made only when leaves are dry. Treat early when corn is small enough (3-4 ft) to allow good coverage. Three gallons per acre minimum spray volume by air and 20 gallons per acre minimum spray volume by ground.
1B Dimethoate 400 dimethoate 0.66-1.0 pt PHI 28 days for grain harvest. PHI 14 days for forage. Do not apply during the pollen-shed period.
3 R Hero zeta-cypermethrin
and bifenthrin		 10.3 fl oz PHI 30 days for grain and stover. PHI 60 days for forage. Do not graze livestock in treated areas or cut treated crops for feed within 30 days of the last application.
23 Oberon 2SC spiromesifen 5.7-16.0 fl oz PHI 30 days for grain or stover. PHI 5 days for green forage and silage. Minimum application volume; 10 GPA by ground, 5 GPA by air. May be chemigated. Maximum of 2 applications per crop season.
23 Oberon 4SC spiromesifen 2.85-8.0 fl oz PHI 30 days for grain or stover. PHI 5 days for green forage and silage. Minimum application volume; 10 GPA by ground, 5 GPA by air. May be chemigated. Maximum of 2 applications per crop season.
10A Onager hexythiazox 10-24 fl oz PHI 30 days for grain, forage and stover. *May only be applied west of highway 281 in Nebraska. Minimum application volume; 15-20 GPA by ground, 5 GPA by air. May be applied once per year.
1B, 3 R Tundra Supreme chlorpyrifos
and bifenthrin		 13.5-16.8 fl oz PHI 30 days for grain and silage. Do not graze livestock in treated areas or cut treated crops for feed within 30 days of the last application. Do not apply in tank mixes with Steadfast or Lightning herbicides.
10B Zeal etoxazole 1-3 oz PHI 21 days. Do not apply more than 2 times per season or less than 14 days apart. Do not apply more than 6 oz per acre per season.