Cucumber-Seedcorn maggot

Delia platura

Pest description, crop damage and life history

See:

Management-biological, cultural, tactical

To assess potential infestation levels prior to planting, place a cut potato or other vegetable or fruit in the field and apply bakers yeast with some water to the cut surface. Leave the bait for several hours and return to look for the presence of adult seedcorn maggot flies as they are attracted to carbon dioxide.

Management-chemical control: HOME USE

  • bifenthrin
  • pyrethrins
  • zeta-cypermethrin

Management-chemical control: COMMERCIAL USE

  • bifenthrin + IBA (Empower 2) at 0.04 to 0.1 lb ai/a. PHI 3 days. REI 24 hr. Retreatment interval 7 days. Do not exceed 0.3 lb ai/a per season.

Seed treatment

  • chlorpyrifos (Lorsban 50W) at 0.0625 lb ai per 100 lb of seed. Use as a slurry seed treatment prior to planting. Do not use treated seed as human or livestock food. Toxic to fish. Commercial seed treater only.

Soil treatment

  • bifenthrin (Brigade WSB) at 0.05 to 0.1 lb ai/a in furrow with seed or transplant. REI 12 hr.
  • bifenthrin + avermectin (Athena) at 0.058 to 0.12 lb ai/a at plant broadcast, in-furrow or drench. REI 12 hr. Do not exceed 0.35 lb ai/a Athena, 0.056 lb ai/a avermectin, nor 0.3 lb ai/a per season.

Note: Pesticides may injure cucurbits. The possibility of injury is less when foliage is dry at time of application.