Insecticides for Control of Defoliating Insects in Soybean

Updated February 15, 2017


Economic Threshold:
More than 50% of plants with armyworm feeding damage, and live armyworms less than 1.25 inches long are numerous (Purdue University).

See https://www.greenbook.net or other resources 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 11 = Microbial distuptors of insect midgut membranes (includes transgenic crops expressing Bacillus); 11B2 = B. t. subsp. kurstaki
  • Group 18 = Ecdysone receptor agonists, 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 At Planting:
0.5 fl oz/1000 row ft

Pre-Emergence,
and Post-Emergence:
6.4-12.8 fl oz
Apply in an infurrow, band, or t-band at planting in a minimum of a 4-inch band. PHI 30 days for grain or fodder (stover). Forage may be harvested on the day of application.
3 R Arctic 3.2EC permethrin At Planting:
0.3 fl oz/1000 row ft

Pre-Plant Incorporated or
Pre-Emergence:
0.3-0.6 fl oz/1000 row ft
or 4-6 fl oz/acre

Post Emergence:
4-6 fl oz/acre
Planting time: apply as an infurrow, band or t-band treatment using a minimum 4 inch band.
Pre-Plant Incorporated and Pre-Emergence: apply in time period from 5 days prior to planting up to emergence of the crop. PHI 30 days for harvest of grain or fodder (stover). Forage may be harvested on the day of application.
3 R Asana XL esfenvalerate 5.8-9.6 fl oz PHI 21 days.
3 R Baythroid XL cyfluthrin 1.6-2.8 fl oz PHI 21 days for grain or fodder and 0 days for green forage. Recommended for use against 1st and 2nd instar larvae.
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.
11 Biobit, Deliver,
Dipel, Lepinox,
XenTari, etc.
Bacillus thuringiensis See Product Label PHI 30 days.
3R Brigade 2EC,
Fanfare 2EC,
Bifenture EC,
Discipline 2EC,
Sniper,
Tundra EC
bifenthrin At Planting:
0.15-0.30 fl oz/1000 row ft

Pre-Plant Incorporated:
3-4 fl oz/acre

Pre-Emergence:
2.56 fl oz/acre

Post Emergence:
2.1-6.4 fl oz/acre
PHI 30 days. Do not graze livestock in treated area or cut treated crops for feed within 30 days of treatment. Do not apply to soil where there is greater than 30% cover of crop residue remaining.
3 R
Capture LFR
bifenthrin
At Planting:
0.20-0.39 fl oz/1000 row ft

Pre-Plant Incorporated:
4.0-5.3 fl oz/acre

Pre Emergence:
3.4 fl oz/acre
Capture LFR insecticide is for mixing directly with liquid fertilizer to control soil insect pests. Do not apply to soil where there is greater than 30% cover of crop residue remaining.
1B, 3 R Cobalt chlorpyrifos and
gamma cyhalothrin
PrePlant,
At-Plant,
or Pre-Emergence:
13-38 fl oz

Post-Emergence:
13-26 fl oz
PHI 21 days for grain, ears, forage or fodder.
1B, 3 R Cobalt Advanced chlorpyrifos and
gamma cyhalothrin
PrePlant,
At-Plant,
or Pre-Emergence:
11-38 fl oz

Post-Emergence:
11-26 fl oz
PHI 21 days for grain, ears, forage or fodder.
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.
11B2 Dipel ES Bacillus thuringiensis
kurstaki

strain ABTS-351
2.0-4.0 pts Treat when plants first exhibit feeding signs in the whorl of leaves.
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 Labelled for at planting-time and foliar applications. For armyworm spp. at planting, apply on the soil surface in a 5-7 inch band in a minimum of 3-7 gallons per acre. PHI 30 days for grain and stover and 60 days for forage.
18 Intrepid 2F methoxyfenozide 4-16 fl oz PHI 21 days.
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.
1B R Lorsban Advanced,
Lorsban 4E,
Govern 4E,
Hatchet,
Warhawk,
Yuma 4E
chlorpyrifos 1-2 pts PHI 21 days before harvest of grain, ears, forage or fodder.
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.
1B R Lorsban Advanced,
Lorsban 4E,
Govern 4E,
Hatchet,
Nufos 4E,
Warhawk,
Yuma 4E
chlorpyrifos 1-2 pts For aerial applications use 2 - 5 gal of spray per acre. Do not apply within 35 days of harvest of grain.
1B R Penncap-M microencapsulated
methyl parathion
2-3 pts PHI 12 days for harvest, forage and grazing.
3 R Pounce 1.5G permethrin 6.7-10.0 lbs
broadcasted,
8 oz/1000 row ft
May be applied as a pre-plant incorporated, pre-emergence, planting time or foliage use application. 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 Up to 0.6 lb ai per acre may be used per season.
3 R Proaxis gamma-
cyhalothrin
2.56-3.84 fl oz For control of 1st and 2nd instars only. PHI 21 days.
5 Radiant SC spinetoram 3-6 fl oz *Not labelled for control of yellowstriped armyworm or western yelllowstriped armyworm. PHI 28 days for grain and 3 days for fodder or forage.
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 +
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.
3 R Tombstone cyfluthrin 1.6-2.8 fl oz PHI 21 days for grain or fodder and 0 days for green forage. Recommended for use against 1st and 2nd instar larvae.
1B, 3 R Tundra Supreme chlorpyrifos
and bifenthrin
At Planting:
0.4-0.8 fl oz

Post-Emergence:
5.6-16.8 fl oz
PHI 30 days for grain and silage. Shallow incorporation using a rotary hoe or other equipment may improve control.
3 R Warrior w/
Zeon Technology,
Silencer
lambda-cyhalothrin 2.56-3.84 fl oz Recommended for control of 1st and 2nd instars only. 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 Recommended for control of 1st and 2nd instars only. PHI 21 days for harvest, grazing or cutting treated crops for feed.