1. Insect
  2. Vegetable Crops
  3. Vegetable Crops
  4. Hosts and Pests of Vegetable Crops

Salsify-Armyworm

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Bertha armyworm
Mamestra configurata Walker
Adult
© Ken Gray Insect Image Collection
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Bertha armyworm
Mamestra configurata Walker
Immature
© Ken Gray Insect Image Collection
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Beet armyworm
Spodoptera exigua Hubner
Adult
© Ken Gray Insect Image Collection
Image related to Salsify-Armyworm
Beet armyworm
Spodoptera exigua Hubner
Immature female adult
© Ken Gray Insect Image Collection
Image related to Salsify-Armyworm
Beet armyworm
Spodoptera exigua Hubner
Egg(s) on host
© Ken Gray Insect Image Collection

Beet armyworm (Spodoptera exigua)
Bertha armyworm (Mamestra configurata)

Pest description, crop damage and life history

See:

Common Pests of Vegetable Crops

Management-chemical control: HOME USE

Apply any one of these materials to the soil surface at first sign of cutworm activity. Consult label. Minimum preharvest interval (PHI) varies with crop.

  • azadirachtin (as a mix with pyrethrins)-Some formulations are OMRI-listed for organic use.
  • bifenthrin (as a mix with zeta-cypermethrin).
  • carbaryl
  • cyfluthrin
  • plant-derived essential oils (rosemary, peppermint, etc.)-These have some efficacy against lepidopteran larvae. Some formulations are OMRI-listed for organic use.
  • pyrethrins-Some formulations are OMRI-listed for organic use.
  • spinosad-Some formulations are OMRI-listed for organic use.
  • zeta-cypermethrin

Management-chemical control: COMMERCIAL USE

  • Bacillus thuringiensis (Javelin) at 0.12 to 1.5 lb/a. PHI 0 days. REI 4 hr. Acts slowly; may need multiple applications. Add an appropriate spreader-sticker to enhance control. Most effective on small larvae. Some formulations are OMRI-listed for organic use.
  • alpha-cypermethrin (Fastac EC) at 0.02 to 0.025 lb ai/a. PHI 1 day. REI 12 hr. Retreatment interval 4 days. Do not exceed 0.075 lb ai/a per season.
  • azadirachtin (Neemix 4.5) at 0.14 to 0.35 lb ai/a. PHI 0 days. REI 4 hr. OMRI-listed for organic use.
  • bifenthrin (Brigade WSB) at 0.08 to 0.1 lb ai/a. PHI 21 days. REI 12 hr. Do not exceed 0.5 lb ai/a per season.Retreatment interval 7 days.
  • bifenthrin/zeta-cypermethrin (Hero EW) at 0.04 to 0.1 lb ai/a. PHI 21 days. REI 12 hr. Retreatment interval 21 days. Do not exceed 0.45 lb ai/a per season.
  • Burkholderia spp. (Venerate XC) at 1 to 4 quarts/a product. PHI 0 days. REI 4 hr. OMRI-listed for organic use.
  • carbaryl (Sevin 4F and Sevin Baits) at 1 to 2 lb ai/a foliar and 2 lb ai/a bait. PHI 7 days. REI 12 hr. Do not exceed 6 lb ai/a per season.
  • chlorantraniliprole (Coragen) at 0.045 to 0.065 lb ai/a. PHI 1 day. REI 4 hr. Retreatment interval 3 days. Do not exceed 4 applications per crop or 0.2 lb ai/a per crop.
  • Chromobacterium subtsugae (Grandevo) at 0.3 to 0.9 lb ai/a per 100 gal. PHI 0 days. REI 4 hr. OMRI-listed for organic use.
  • deltamethrin (Delta Gold) at 0.018 to 0.028 lb ai/a. PHI 3 days. REI 12 hr. Retreatment interval 3 days. Do not exceed 0.14 lb ai/a per season.
  • GS-omega/kappa-Hxtx-Hv1a (Spear Lep) at 0.8 lb ai/a. PHI 0 days. REI 4 hr. Do not exceed 2 lb ai/a per year.
  • methoxyfenozide (Intrepid 2F) at 0.06 to 0.12 lb ai/a for early season; 0.12 to 0.16 ai/a for mid to late season. REI 4 hr. PHI 1 day. Retreatment interval 14 days. Do not exceed 1 lb ai/a per season.
  • spinetoram (Radiant SC) at 0.047 to .0.0625 lb ai/a. PHI 3 days. Retreatment interval 4 days. Do not exceed 0.219 lb ai/a per season. Limit 4 treatments per season.
  • spinosad (Success, Entrust SC) at 0.047 to 0.094 lb ai/a. PHI 3 days. REI 4 hr. Retreatment interval 5 days. Do not exceed 0.3 lb ai/a per season. Entrust SC is OMRI-listed for organic use.
  • zeta cypermethrin (Mustang) 0.04 to 0.05 lb ai/a. PHI 1 day. REI 12 hr. Do not exceed 0.3 lb ai/a per season. Retreatment interval 4 days.