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

Canola-Tarnished Plant Bug

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Lygus lineolaris

Pest description and crop damage Tarnished plant bug (TPB) adults are approximately 5 mm (1/5 inches) in length, mottled, yellowish-to-reddish-brown in color and have a small triangle shape on their back. Feeding on flowers can cause flower abortion. Feeding during pod stages results in scarring, malformation and dimpling or pitting of the pods. Sap may ooze from the feeding sites on the pods, which increases the risk of pod disease development. TPB can also drill directly into the seed, causing pick, reducing seed quality. Yield losses of up to 20% have been observed.

Management-chemical control (Foliar Treatment)

  • azadirachtin (Azasol) at 6 oz (0.22 lb ai) in 50 gal water/A. Spray early when nymphs are young. OMRI-listed for organic use.
  • Beauveria bassiana GHA (Mycotrol ESO) at 0.50 to 2 quarts/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 oz 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.
  • chlorantraniliprole, lambda-cyhalothrin (Besiege) at 5.0 to 10.0 fl oz/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).
  • deltamethrin (Delta Gold) at 0.009 lb ai/A or 0.8 fl oz/A. Do not apply more than 1.5 fl oz of Delta Gold per acre on canola in one growing season. Allow 7 days between applications. Do not apply within 7 days of harvest. When applying by air, apply a minimum of 2 gal water per acre and 5 gal water by ground.
  • flonicamid (Beleaf 50 SG) at 2.8 oz/A or 0.089 lb ai/A. Do not apply more than 2.8 oz per acre per application or 8.4 oz per acre per year. Do not apply more than 3 applications per year. Allow a minimum of 7 days between applications.
  • gamma-cyhalothrin (Declare) at 0.0075 to 0.015 lb ai/A or 0.77 to 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 0.015 to 0.03 lb ai/a or 0.96 to 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 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.
  • 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.