Corn seed-Cutworm

Includes

Black cutworm (Agrotis ipsilon)

Glassy cutworm (Apamea devastator) 


Redbacked cutworm (Euxoa ochrogaster)

Pest description and crop damage Reddish, green, black, or dirty white worms that tunnel into the base of the plant, cut off seedlings, or feed on foliage.

Management-chemical control

  • azadirachtin (Neemix 4.5) at 0.02 to 0.04 lb ai/a. PHI 0 days. REI 4 hr. Begin applications at first sign of infestation. Some formulations are OMRI-listed for organic use. (unidentified group)
  • alpha-cypermethrin (Fastac EC) at 0.001 lb ai per 1,000 linear row ft as an in furrow or band treatment. Apply at 0.008 to 0.018 lb ai/a as a foliar treatment. REI 12 hr. PHI 30 days. If crop residue is to be fed to livestock, PHI 30 days grain & or stover. Retreatment interval 3 days. Do not exceed 0.075 lb ai/a per season. This product is highly toxic to bees and other pollinators exposed to direct treatment or residues on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops or weeds if bees or other pollinating insects are foraging in the treatment area. Not for use on sweet corn seed. (Group 3A)
  • Bacillus thuringiensis (numerous products)-Use according to individual manufacturer's label instructions. PHI 0 days. REI 4 hr. Most effective on small caterpillars, but use highest recommended rate for fully developed ones. A spreader-sticker may improve performance. Some formulations are OMRI-listed for organic use. (Group 11A)
  • beta-cyfluthrin (Bathroid XL) at 0.007 to 0.013 lb ai/a. PHI 21 days. If crop residue is to be fed to livestock, 21 days for grain or fodder. Do not exceed four applications or 0.088 lb ai/a per season. REI 12 hr. Not for use on sweet corn seed. Highly toxic to bees and other pollinators exposed to direct treatment or residues on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops or weeds if bees or other pollinating insects are foraging in the treatment area. (Group 3A)
  • bifenthrin (Bifenthrin 2EC, numerous products) at 0.033 to 0.1 lb ai/a. PHI 30 day. REI 12 hr. Do not exceed 0.3 lb ai/a per season. Bifenthrin is highly toxic to bees and other pollinators exposed to direct treatment or residues on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops or weeds if bees or other pollinating insects are foraging in the treatment area. Extremely toxic to fish and aquatic invertebrates. (Group 3A)
  • bifenthrin (Bifenthrin 2EC, numerous products) at 0.0023 to 0.0046 lb ai/1,000 linear row ft at plant or 0.047 to 0.062 lb ai/a preplant. Use highest rate under heavy insect pressure. PHI 30 days. REI 12 hr. Do not exceed 0.1 lb ai/a at planting, 0.3 lb ai/a per season. Bifenthrin is highly toxic to bees and other pollinators exposed to direct treatment or residues on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops or weeds if bees or other pollinating insects are foraging in the treatment area. Extremely toxic to fish and aquatic invertebrates. (Group 3A)
  • bifenthrin/chlorethoxyfos (Smart Choice 5G) at 4.5 to 5 oz/1,000 row ft. REI 48 hr; 72 hr where annual rainfall is less than 25 inches. This product is highly toxic to bees and other pollinators exposed to direct treatment or residues on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops or weeds if bees or other pollinating insects are foraging in the treatment area. (Groups 3A and 1B)
  • bifenthrin/indole-3-butyric acid (Empower II) at 0.002 to 0.006 lb ai/1,000 linear row ft. PHI 30 days. REI 24 hr. Do not exceed 0.1 lb ai/a at planting. Not for use on sweet corn seed. This product is highly toxic to bees and other pollinators exposed to direct treatment or residues on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops or weeds if bees or other pollinating insects are foraging in the treatment area. (Group 3A)
  • bifenthrin/zeta-cypermethrin (Hero) at 0.025 to 0.06 lb ai/a foliar or 0.04 to 0.1 lb ai/a at plant. PHI 3 days for sweet corn seed. Do not graze livestock in treated areas or cut treated sweet corn seed crops for feed within 3 days of the last application. For non-sweet corn seed crops, there is a PHI of 30 days for crop residues harvested for stover; do not allow livestock to graze on crop residues for 30 days after treatment. REI 12 hr. Do not exceed 0.4 lb ai/a per season. Refer to product labels for application limits if multiple products containing zeta-cypermethrin are to be used in the same season. This product is highly toxic to bees and other pollinators exposed to direct treatment or residues on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops or weeds if bees or other pollinating insects are foraging in the treatment area. (Group 3A)
  • chlorpyrifos (numerous products). Chlorpyrifos is highly toxic to bees and other pollinators exposed to direct treatment or residues on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops or weeds if bees or other pollinating insects are foraging in the treatment area. (Group 1B)
    • Lorsban 15G and other granular formulations at 0.075 lb ai/1,000 ft T-band. PHI 21 days for grain and ears. REI 24 hr. Do not exceed 0.15 lb ai/1,000 ft of row or 3 lb chlorpyrifos ai/a per season.
    • Lorsban 4E other formulations at 0.5 to 1 lb ai/a. PHI 21 days grain or ears. REI 24 hr. Apply postemergence broadcast or through overhead irrigation. Do not exceed 3 lb chlorpyrifos ai/a per season.
  • chlorpyrifos/gamma cyhalothrin (Cobalt) at 0.26 to 0.76 lb ai/a at plant. do not apply within 21 days before harvest of grain, ears, forage or fodder. REI 24 hr. This product is highly toxic to bees and other pollinators exposed to direct treatment or residues on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops or weeds if bees or other pollinating insects are foraging in the treatment area. (Groups 1B and 3A)
  • cyfluthrin (Tombstone) at 0.013 to 0.025 lb ai/a. PHI 21 days. If crop residue is to be fed to livestock, 21 days for grain or fodder. Do not exceed four applications or 0.175 lb ai/a per season. REI 12 hr. This product is highly toxic to bees and other pollinators exposed to direct treatment or residues on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops or weeds if bees or other pollinating insects are foraging in the treatment area. (Group 3A)
  • esfenvalerate (Asana XL; other products) at 0.03 to 0.05 lb ai/a or 0.0023 lb ai/1,000 row ft at plant. PHI 21 days. REI 12 hr. Do not exceed 0.25 lb ai/a per season. Esfenvalerate is highly toxic to bees and other pollinators exposed to direct treatment or residues on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops or weeds if bees or other pollinating insects are foraging in the treatment area. Esfenvalerate is highly toxic to fish and aquatic invertebrates. (Group 3A)
  • gamma-cyhalothrin (Declare) at 0.0075 to 0.0125 lb ai/a applied as foliar or 0.0025 lb ai/a per 1,000 row ft. PHI 21 days. Do not allow livestock to graze in treated areas within 1 day after last treatment. Do not feed treated corn fodder or silage to meat or dairy animals within 21 days after the last treatment. REI 24 hr. Do not exceed 0.06 lb ai/a per season. Refer to product labels for application limits if products containing gamma-cyhalothrin and products containing lambda-cyhalothrin are to be used in the same season. This product is highly toxic to bees and other pollinators exposed to direct treatment or residues on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops or weeds if bees or other pollinating insects are foraging in the treatment area. Extremely toxic to fish and aquatic organisms and toxic to wildlife. (Group 3A)
  • lambda-cyhalothrin (Warrior II) at 0.005 lb ai/a at plant or 0.015 to 0.025 lb ai/a foliar. PHI 21 days. If crop residues are to be used for livestock, PHI is 1 day for grazing, 21 days for fodder or silage. REI 24 hr. Apply no more than 0.12 lb ai/a per season. Refer to product labels for application limits if products containing gamma-cyhalothrin and products containing lambda-cyhalothrin are to be used in the same season. Highly toxic to bees and other pollinators exposed to direct treatment or residues on blooming crops or weeds. Do not apply lambda-cyhalothrin or allow it to drift to blooming crops or weeds if bees or other pollinating insects are foraging in the treatment area. Lambda-cyhalothrin is extremely toxic to fish and aquatic organisms and toxic to wildlife. (Group 3A)
  • methomyl (Lannate LV; other products) at 0.45 lb ai/a. PHI 21 days for ears or stover. REI 48 hr. Do not exceed 2.25 lb ai/a per season. Methomyl is highly toxic to bees exposed to direct treatment or residues on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops if bees are visiting the treatment area. (Group 1A)
  • permethrin (numerous products) at 0.1 to 0.2 lb ai/a foliar or 0.1 to 0.2 lb ai/a preemergence broadcast. Do not exceed 0.45 lb ai/a per season. If crop residues are to be used for livestock, do not apply less than 30 days prior to harvest of grain or fodder (stover). Not for use on sweet corn seed. REI 12 hr. Do not exceed 0.45 lb ai/a per season. Use only prior to brown silk formation. Not for use on sweet corn seed. Permethrin is highly toxic to bees exposed to direct treatment or residues on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops if bees are visiting the treatment area. Extremely toxic to aquatic organisms, (Group 3A)
  • tefluthrin (Force 3G and other formulations) at 0.0056 to 0.0075 lb ai/1,000 row feet, T-banded or in-furrow at planting. Do not exceed one application per season. REI 48 hrs. This product is highly toxic to fish and aquatic invertebrates. (Group 3A)
  • zeta-cypermethrin (Mustang, Mustang Maxx) at 0.002 lb ai/1,000 row ft (Mustang) or at 0.001 lb ai/1,000 row ft at planting (Mustang Maxx). Foliar treatment at 0.016 to 0.035 lb ai/a (Mustang) or 0.008 to 0.0175 lb ai/a at planting or at 0.016 to 0.035 lb ai/a foliar (Mustang, Mustang Maxx). Do not apply within 7 days of harvest of crop residues for stover. REI 12 hr. Do not exceed 0.2 lb ai/a per season (Mustang) or 0.1 lb ai/a per season (Mustang Maxx). Refer to product labels for application limits if multiple products containing zeta-cypermethrin are to be used in the same season. PHI 30 days. Not for use on sweet corn seed. These products are highly toxic to bees exposed to direct treatment or residues on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops if bees are visiting the treatment area. (Group 3A)

For additional information

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