Pieris rapae
Pest description and crop damage Larvae are green and very hairy with a velvet-like appearance. Caterpillars are soft, velvety green with faint yellow stripes. Adult is a white butterfly with black spots.
Management-chemical control
- azadirachtin (Neemix 4.5) at 0.02 to 0.04 lb ai/a. PHI 0 days. Begin applications at first sign of infestation. Multiple applications and thorough coverage are necessary for effective control. Some formulations are OMRI-listed for organic use.
- gamma cyhalothrin (Declare) at 0.0075 to 0.0125 lb ai/a. Do not apply more than 0.12 lb ai/a per season. PHI 1 day.
See also:
Broccoli, Brussels sprout, cabbage, cauliflower-Imported cabbageworm