1. Insect
  2. Legume, Grass, and Field Seed Crops
  3. Canola Pests

Canola-Aphid

  • Facebook logo
Image related to Canola-Aphid
Cabbage aphid
Brevicoryne brassicae Linnaeus
Adult

© Ken Gray Insect Image Collection

Image related to Canola-Aphid
Cabbage aphid
Brevicoryne brassicae Linnaeus
Showing damage on leaves
© Ken Gray Insect Image Collection

Cabbage aphid (Brevicoryne brassicae)

Pest description and crop damage Cabbage aphids are green, gray with a white, waxy coating. They commonly occur in dense colonies, often covered with waxy droplets. They have piercing-sucking mouthparts and prefer to feed on the newest plant growth. Large colonies can stunt or kill small plants. The cabbage aphid appears much earlier than the turnip aphid.

Management-chemical control

  • azadirachtin (Azasol, and others) spray at 6 oz (0.22 lb ai) in 50-gal water/A when pests first appear. For optimum results, 2 to 3 applications made at 7- to 10-day intervals are recommended. Foliar applications should be made to both sides of the leaves. OMRI-listed for organic use.
  • Beauveria bassiana GHA (Mycotrol ESO, Mycotrol ES, BioCers WP, BotaniGard ES and BoteGHA ES) at 0.50 to 1 quart (0.014 to 0.027 lb ai/A) /100 gal of spray volume, (unless BioCers WP 1.5 lb to 3 lb of product (0.2 to 0.6 lb ai/A) /100 gal of spray volume). Apply at 5- to 10-day intervals. High insect populations may require 2- to 5-day intervals. This product may be applied up to the day of harvest. REI 4 hr. Mycotrol ESO contains live spores of the naturally occurring fungus Beauveria bassiana Strain GHA. Spores are alive and may be harmed by storage at high temperatures or contact with water for more than 24 hr. OMRI-listed for organic use.
  • bifenthrin (Tundra EC, others) at 0.033 to 0.04 lb ai/A or 2.1 to 2.6 fl oz/A. Do not exceed 0.08 lb ai/A or 5.12 ounces of formulated product per acre per season. Apply a minimum of 10 gal/A by ground or 2 gal minimum by air. Do not apply within 35 days of harvest. Do not apply less than 14 days apart.
  • bifenthrin; zeta-cypermethrin (Hero Insecticide, others) at 0.04 to 0.053 lb ai/A. Do not exceed 5.5 oz per application. Do not apply more than 11 oz of product per season. Do not apply within 35 days of harvest. Do not make applications less than 14 days apart. Apply a minimum of 10 gal water by ground and 2 gal by air.
  • chlorantraniliprole, lambda-cyhalothrin, (Besiege) at 10.0 fl oz/A (0.098 lb ai/A). PHI 21 days. Do not exceed a total of 28.0 fl oz of Besiege or 0.09 lb ai of lambda-cyhalothrin-containing products or 0.2 lb ai of chlorantraniliprole-containing products per acre per year. Make no more than 4 applications per acre per crop. Only use non-ionic surfactant (NIS).
  • flonicamid (Beleaf 50 SG) at 2.8 oz/A or 0.089 lb ai/A. Do not apply more than 2.8 oz/A per application or 8.4 oz/A per year. Do not apply more than 3 applications per year. Allow a minimum of 7 days between applications.
  • gamma-cyhalothrin (Declare) at 0.015 lb ai/A or 1.54 fl oz/A. PHI 7 days. Minimum interval between applications 5 days. Do not apply more than 0.045 lb ai per acre per season. Do not apply within 7 days of harvest. When applying by air, apply a minimum of 2 gal water per acre.
  • lambda-cyhalothrin (LambdaStar Plus) at 0.03 lb ai/A or 1.92 fl oz/A. Do not apply within 7 days of harvest. Do not apply more than 0.09 lb ai (0.36 pint) per acre per year. Apply in a minimum of 10 gal/A for ground applications or 2 gal/A for ai applications.
  • potassium salts of fatty acid (M-Pede) at 4 pints in 3 to 25 gal water per acre as a stand-alone rate. When applying with other insecticides, use 0.75 to 4 pints in 3 to 25 gal water per acre. OMRI-listed for organic use.
  • pyrethrins, piperonyl butoxide (Pyronyl Crop Spray) at 0.004 to 0.050 lb ai/A or 1 to 12 fl oz/A. Designed as a pre-harvest spray when other materials cannot be used due to PHI restrictions.
  • sulfoxaflor (Transform WG) at 0.5 to 0.75 oz/A or 0.016 to 0.023 lb ai/A. Do not make applications less than 14 days apart. Do not exceed more than two applications per season. Do not apply more than a total of 1.5 oz (0.046 lb ai/A) per year. Do not apply this product at any time between 3 days before bloom and until after petal fall.
  • zeta-cypermethrin (Mustang) at 4.3 fl oz/A or 0.05 lb ai/A. PHI 7 days. Do not apply more than 25.8 oz of product or 0.3 lb of active ingredient per acre per season. Do not make applications less than 7 days apart.

Management-chemical control (Seed Treatment)

  • imidacloprid (Attendant 600) at 10.24 to 25.6 fl oz per hundredweight of seed. In areas where foliar insects are in high numbers, a higher application rate is recommended. Do not graze within 45 days of planting.
  • thiamethoxam, difenoconazole, mefenoxam, fludioxonil and sedaxane (Helix Vibrance) at 23.0 fl oz per 100 lb of seed. Do not graze for feed on treated areas for 45 days after planting.