Includes
Cabbage aphid (Brevicoryne brassicae)
Green peach aphid (Myzus persicae)
Turnip aphid (Lipaphis pseudobrassicae)
Pest description and crop damage Species are gray or lime green in color, mealy plant lice that form colonies on foliage, on heads, or in buds.
Management-chemical control
- azadirachtin (Neemix 4.5 IGR) at 5 to 7 fl oz/A (0.015 to 0.021 lb ai/A). PHI 0 days. REI 4 hr. Begin applications at first sign of infestation. Multiple applications and thorough coverage are necessary for effective control. Apply every 7 to 10 days as needed. This botanical pesticide acts slowly. Spray early, well before harvest, and check for effect. Some formulations are OMRI-listed for organic use.
- imidacloprid (Senator 600 FS) as a seed treatment at 5.1 to 12.8 fl oz per 50 lb bag seed (0.2 to 0.5 lb ai). Use high rate on seed planted in areas with historically high pest pressure. For mustard seed only. REI 12 hr. Do not apply more than 12.8 fl oz/A (0.5 lb ai) per year. Treated seed must be planted at a soil depth greater than 1 inch.
- pymetrozine (Fulfill) at 2.75 oz/A (0.086 lb ai/A) when aphids first appear. Do not apply more than 5.5 oz/A (0.172 lb ai/A) per crop per year. Allow a minimum of 7 days between applications. PHI 21 days. REI 12 hr. Pollinator protection: when crops or weeds are in bloom, apply between 6 pm and 7 pm, Washington only. SLN WA-190003 for Adama Fulfill products (expires 12/31/2024).
See also: