Insecticide Treatment Options for Fall Armyworm in Field Corn

An insecticide application may be economically justified when 75% of plants show leaf feeding and larvae are less than 1.25 inch long. Treatment to control larvae inside the ears is not effective (University of Missouri).

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; 1A = Carbamates, 1B = Organophosphates Group 3 = Sodium channel modulators Group 5 = Nicotinic acetylcholine receptor agonists (allosteric), Spinosyns 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	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	PHI 30 days for harvest of grain or fodder (stover). Forage may be harvested on the day of application.
3 R	Baythroid XL, Tombstone	cyfluthrin	2.8 fl oz	*For control of 1st and 2nd instar only. PHI 21 days for grain or fodder and 0 days for green forage.
28	Belt SC	flubendiamide	2-3 fl oz	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. Use higher listed rates witin the listed rate range for large larvae.
3 R	Brigade 2EC, Fanfare 2EC, Bifenture EC, Discipline 2EC, Sniper, Tundra EC	bifenthrin	2.1-6.4 fl oz	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	13-26 fl oz	PHI 21 days for grain, ears, forage or fodder.
1B, 3 R	Cobalt Advanced	chlorpyrifos and gamma cyhalothrin	11-26 fl oz	PHI 21 days for grain, ears, forage or fodder.
28	Coragen	rynaxypry	3.5-7.5 fl oz	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	PHI 21 days for grain or fodder. PHI 12 days for cutting or grazing for forage.
3 R	Fastac EC	alpha-cypermethrin	3.2-3.8 fl oz	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	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.
1A R	Lannate LV	methomyl	0.75-1.50 pts	PHI 21 days for ears and stover and 3 days for forage.
1A R	Lannate SP	methomyl	0.25-0.50 lb	PHI 21 days for ears and stover and 3 days for forage.
28	Lumivia	chlorantriniliprole	0.25-0.75 mg ai/kernel	Do not exceed a maximum of 0.054 lb ai/A
1B R	Methyl 4EC	methyl parathion	0.5 pt	PHI 12 days. Do not apply during the pollen shed period.
3 R	Mustang Maxx, Respect	zeta-cypermethrin	3.2-4.0 fl oz	PHI 30 days for grain and stover. PHI 60 days for forage.
3 R	Pounce 25WP	permethrin	6.4-9.6 oz	PHI 30 days for grain and fodder.
28	Prevathon	chlorantraniliprole	14-20 fl oz	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 control of 1st and 2nd instars only. PHI 21 days.
1A	Sevin XLR Plus	carbaryl	1-2 qts	PHI 48 days for grain and fodder or 14 days for grazing and silage.
1B, 3 R	Stallion	chlorpyrifos and zeta-cypermethrin	9.25-11.75 fl oz	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	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	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	PHI 30 days for grain and silage.
3 R	Warrior w/ Zeon Technology, Silencer	lambda-cyhalothrin	2.56-3.84 fl oz	*For control of 1st and 2nd instar only. *Use higher rates for large larvae. 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 control of 1st and 2nd instar only. *Use higher rates for large larvae. PHI 21 days for harvest, grazing or cutting treated crops for feed.