Insecticide Treatments for European Corn Borer in Field Corn

Updated February 14, 2017

Economic Thresholds:
First Generation Scouting and Treatment Decisions
Second Generation Scouting and Treatment Decisions

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

IRAC Mode of Action Classification:
  • Group 1 = Acetylcholine esterase inhibitors; 1A = Carbamates, 1B = Organophosphates
  • Group 3 = Sodium channel modulators
  • Group 5 = Nicotinic acetylcholine receptor agonists (allosteric), Spinosyns
  • Group 11 = Microbial distuptors of insect midgut membranes (includes transgenic crops expressing Bacillus); 11B2 = B. t. subsp. kurstaki
  • Group 18 = Ecdysone agonists/moulting disruptors; 18A = Diacylhydrazines
  • Group 28 = Ryanodine receptor modulators, Diamides
R = Restricted-Use Product

Mode Of
Action
Product
Name
Common
Name
Rate
(Formulation/Acre)
Restrictions/Comments
3 R
Ambush 2EC
permethrin
6.4-12.8 fl oz
 *For use against 2nd generation larvae. PHI 30 days for grain or fodder (stover). Forage may be harvested on the day of application.
3 R Arctic 3.2EC permethrin 4-6 fl oz *For use against 2nd generation larvae. PHI 30 days for harvest of grain or fodder (stover). Forage may be harvested on the day of application.
3 R Asana XL esfenvalerate 7.8-9.6 fl oz *For use against 2nd generation larvae. PHI 21 days.
3 R Baythroid XL,
Tombstone		 cyfluthrin 1.6-2.8 fl oz *For use against 2nd generation larvae. Application must be made prior to the larva boring into the plant. PHI 21 days for grain or fodder and 0 days for green forage.
28 Belt SC flubendiamide 2-3 fl oz *For use against 2nd generation larvae. PHI 1 day for green forage and silage and 28 days for grain or stover.
3, 28 R Besiege lambda-cyhalothrin,
chlorantraniliprole		 6-10 fl oz PHI 21 days. Do not feed treated corn fodder or silage to meat or dairy animals within 21 days after last treatment. For control before the larva bores into the plant stalk or ear.
11B2 Biobit, Deliver,
Dipel, XenTari, etc.		 Bacillus thuringiensis *Please see specific product
labels for rates and uses.		 For use against 1st and/or 2nd generation larvae.
3 R Brigade 2EC,
Fanfare 2EC,
Bifenture EC,
Discipline 2EC,
Sniper,
Tundra EC		 bifenthrin 2.1-6.4 fl oz *For use against 2nd generation larvae. PHI 30 days. Do not graze livestock in treated area or cut treated crops for feed within 30 days of treatment.
1B, 3 R Cobalt chlorpyrifos and
gamma-cyhalothrin		 19-38 fl oz PHI 21 days for grain, ears, forage or fodder.
1B, 3 R Cobalt Advanced chlorpyrifos and
gamma cyhalothrin		 16-38 fl oz PHI 21 days for grain, ears, forage or fodder.
28 Coragen rynaxypry 3.5-7.5 fl oz *For use against 2nd generation larvae. PHI 14 days.
3 R Declare gamma-cyhalothrin 1.02-1.54 fl oz PHI 21 days for grain, livestock grazing or silage harvest.
3 R Delta Gold deltamethrin 1.5-1.9 fl oz *For use against 2nd generation larvae. PHI 21 days for grain or fodder. PHI 12 days for cutting or grazing for forage. Apply to early instar larvae prior to boring into the ear or stalk.
11B2 Dipel ES Bacillus thuringiensis
kurstaki
strain ABTS-351		 1.5-2.5 pts Application should be made when larvae are in the early instar stage.
3 R Fastac EC alpha-cypermethrin 2.7-3.8 fl oz For control before the larva bores into the plant stalk or ear. PHI 30 days for grain and stover. PHI 60 days for forage.
3 R Hero zeta-cypermethrin
and bifenthrin		 4.0-10.3 fl oz *For use against 2nd generation larvae. PHI 30 days for grain or stover and 60 days for forage. Do not graze livestock in treated areas or cut treated crops for feed within 30 days of the last application.
18 Intrepid 2F methoxyfenozide 4-16 fl oz *For use against 2nd generation larvae. PHI 21 days.
1A R Lannate LV methomyl 0.75-1.50 pts *For use against 2nd generation larvae. PHI 21 days for ears and stover, and 3 days for forage.
1A R Lannate SP methomyl 0.25-0.50 lb *For use against 2nd generation larvae. PHI 21 days for grain or fodder and 3 days for forage.
1B Lorsban 15G chlorpyrifos Post-Plant Banded Applications
via Conventional and
SmartBox Systems:
3.5-8.0 oz/1000 row ft

Aerial Broadcast Applications:
5.0-6.5 lbs/acre>		 *For use against 1st generation larvae. PHI 35 days for grain. Do not allow meat or dairy animals to graze in treated areas or harvest treated corn silage as feed for meat or dairy animals within 14 days after last treatment. Do not feed treated corn fodder to meat or dairy animals within 35 days after last treatment.
1B R Lorsban Advanced,
Lorsban 4E,
Govern 4E,
Hatchet,
Nufos 4E,
Warhawk,
Yuma 4E		 chlorpyrifos 1-2 pts *For use against 2nd generation larvae. PHI 21 days before harvest of grain, ears, forage or fodder.
3 R Mustang Maxx,
Respect		 zeta-cypermethrin 2.72-4.0 fl oz *For use against 2nd generation larvae. Apply before larvae bores into stalk or ear. PHI 30 days for grain and stover. PHI 60 days for forage.
1B R Penncap-M methyl parathion 2-4 pts *For use against 2nd generation larvae. PHI 12 days for harvest, forage and grazing.
3 R Pounce 1.5G permethrin 6.7-10.0 lbs *For use against 1st generation larvae. Do not make treatments less than 7 days apart. PHI 30 days for grain and fodder (stover). Forage may be harvested on the day of application.
3 R Pounce 25WP permethrin 6.4-9.6 oz *For use against 2nd generation larvae. PHI 30 days for grain or fodder and 0 days for forage.
28 Prevathon chlorantraniliprole 14-20 fl oz *For use against 1st or 2nd generation larvae. PHI 14 days for harvest of ears and 1 day for forage, fodder, silage or stover.
3 R Proaxis gamma-
cyhalothrin		 2.56-3.84 fl oz *For use against 2nd generation larvae. For control of larvae before they bore into the stalk or ear. PHI 21 days.
5 Radiant SC spinetoram 3-6 fl oz *For use against 2nd generation larvae. PHI 28 days for grain and 3 days for fodder or forage.
1A Sevin XLR Plus carbaryl 1.5-2.0 qts *For use against 2nd generation larvae. PHI 48 days for grain or fodder and 14 days for grazing of forage or silage.
1B, 3 R Stallion chlorpyrifos +
zeta-cypermethrin		 9.25-11.75 fl oz *For use against 2nd generation larvae. For control before the larva bores into the stalk or ear. PHI 30 days for grain or stover and 60 days for forage.
3 R Steed zeta-cypermethrin
and bifenthrin		 3.5-4.7 fl oz *For use against 2nd generation larvae. PHI 30 days for grain or stover and 60 days for forage. Do not graze livestock in treated areas or cut treated crops for feed within 30 days of the last application.
5 Tracer spinosad 1-3 fl oz *For use against 2nd generation larvae. PHI 28 days for grain and 3 days for fodder or forage harvest.
1B, 3 R Tundra Supreme chlorpyrifos
and bifenthrin		 5.6-16.8 fl oz *For use against 1st or 2nd generation larvae. PHI 30 days for grain and silage.
3 R Warrior w/
Zeon Technology,
Silencer		 lambda-cyhalothrin 2.56-3.84 fl oz *For use against 2nd generation larvae. For control before the larvae bores into the ear. PHI 21 days for harvest, grazing or cutting treated crops for feed.
3 R Warrior II w/
Zeon Technology		 lambda-cyhalothrin 1.28-1.92 fl oz *For use against 2nd generation larvae. For control before the larvae bores into the ear. PHI 21 days for harvest, grazing or cutting treated crops for feed.