Insect Control Options

There can be big cost differences between products used to treat a particular problem.  Sometimes the product you planned on is not available.  Here’s a summary of registered control products (Ontario) for some common early-season tomato and pepper insect pests to help you know your options.

Early-season cutworms

Product Group Registered on tomatoes and/or peppers? Notes
diazinoneg. Diazinon 50 W, Diazol 50 EC 1B tomatoes, peppers
  • surface and subterranean cutworm
  • soil treatment before planting
  • details under “Additional Insect Control” on label
lambda-cyhalothrineg. Matador 120 EC, Silencer 120 EC 3 tomatoes
acephateOrthene 1B tomatoes
  • transplant water application
permethrin eg. Pounce 384 EC, Perm-UP 3 peppers
  • will only control surface-feeding or climbing cutworms
chlorpyrifos eg. Pyrinex 480 EC, Lorsban 4E 1B peppers
  • soil treatment or broadcast spray

Wireworms

Product Group Registered on tomatoes and/or peppers? Notes
acephateOrthene 1B tomatoes
  • transplant water application

Colorado Potato Beetle (tomatoes)

Product Group Notes
Bacillus thuringiensiseg. Novodor 11
  • for control of CPB larvae
imidacloprideg. Admire 240F, Grapple 4
acetamipridAssail 70 WP 4
chlorantraniliproleCoragen 28
lambda-cyhalothrineg. Matador 120 EC, Silencer 120 EC 3
deltamethrinDecis 5 EC 3
cypermethrineg. Ripcord 400 EC, UP-Cyde 2.5 EC 3
permethrin eg. Pounce 384 EC, Perm-UP 3
spinosadSuccess 480 EC, Entrust 80 W 5
  • for control of CPB larvae
acephateOrthene 1B
  • transplant water application

This is not a complete list of registered products.  Resistance to some registered products has been seen in Ontario.  Dip tests before field spraying help to reduce costs by avoiding ineffective sprays.  See http://www.omafra.gov.on.ca/english/crops/facts/pbeetletst.htm for more information.

Be sure to read and follow label directions before using any pest control product.