Protect Tomato Quality From Worm Pests

Effective lepidopteran control requires careful scouting and strategic insecticide rotation.

Some pest threats are easier to predict than others. Certain plant diseases, for instance, are likely to be more of a problem with this year’s wetter-than-normal spring conditions. But the potential threat from some insect pests is harder to anticipate.

Lepidopteran pests, including cabbage looper, beet armyworm and tomato fruitworm, are some of the biggest threats to Western tomato crops, says John Jenkins, retail account manager, DuPont Crop Protection. “It’s hard to predict from year to year what insect pressures to expect. That’s why the most effective tools for combatting them are frequent, careful scouting and a well-planned insecticide rotation.”

Sizing Up Worm Threats
Thresholds for evaluating potential damage from worm pests are different for processing and fresh-market tomato crops, notes Jenkins.

“Protecting the quality of fresh-market tomatoes may require tighter spray intervals,” adds Jenkins. “You can’t afford to let worms become an issue. Once they’re there, you’re sure to have fruit damage.”

Tomato fields planted later in the spring are more likely to face greater insect pressure in the summer months, he notes. “This time of year, it’s important to step up scouting frequency.”

Advantages of Coragen® Foliar Application for Tomatoes

  • The only “single” active ingredient Group 28 insecticide labeled for vegetable crops
  • Fast knockdown and long-lasting residual protection from armyworms and tomato fruitworm
  • Easy on predators, parasitoids and pollinators1
  • Minimal worker safety and PPE requirements
  • Shortest re-entry interval available – 4 hours
  • Short preharvest interval – 1 day

The Right Protection
To optimize tomato yield and quality, growers must achieve consistent and lasting control of key worm pests. One reliable tool is DuPont™ Coragen® insect control powered by Rynaxypyr®. “Coragen® provides exceptional control of all major worm pests in tomatoes, and its extended residual control makes it a real powerhouse when it comes to lepidopteran control,” says Jenkins.

“You may have multiple worm species in a field at the same time at different developmental stages,” he adds. “Coragen® provides activity on multiple stages – eggs, larvae and adults. Applied at a rate of 4 fluid ounces per acre, Coragen® provides up to three weeks of protection.”

A Group 28 insecticide, Coragen® offers a foliar treatment alternative that fits nicely into an integrated pest management program, says Jenkins. “Coragen® can be used in rotation with other non-Group 28 insecticides, such as DuPont™ Avaunt® insecticide (Group 22 insecticide), to prevent insecticide resistance. It’s important to avoid making consecutive applications of insecticides with the same mode of action on successive generations of the same pest.”

Coragen® has minimal impact on beneficial species when used according to label directions and offers short re-entry and preharvest intervals, he adds.

For more information, talk to your DuPont retailer and visit

1 In line with IPM and good agricultural practices, insecticide applications should be made when pollinators are not foraging to avoid unnecessary exposure
Always read and follow all label directions and precautions for use.
DuPont™ Coragen® is not registered in all states. Contact your DuPont representative for details and availability in your state.
Unless indicated, trademarks with ®, ™ or sm are trademarks of DuPont or affiliates. © 2017 DuPont.