Good Insect Scouting Helps Prevent Worm Damage in Corn, Cotton

With heavy pest pressure posing a significant threat to late-planted crops, growers fight to protect corn and cotton profitability.

Frequent, effective insect scouting and preparation to control insects can make the difference between harvesting a crippled crop and having a banner year.

Scouting Guidelines

Correct insect scouting practices for damaging worms are critical. To properly scout cotton for cotton bollworm, University of Missouri extension specialists recommend the following:

  • Scout frequently when corn stops silking and begins to mature; this is when infestation risk for cotton is greatest.
  • Examine five plants in each of 10 locations for signs of eggs, larvae or feeding damage.
  • Continue scouting once or twice a week until the last effective boll matures.
  • Consider insecticide application when infestations reach the economic threshold of at least 10 bollworm eggs or larvae per 100 plants, or when square or boll damage reaches 5 to 10 percent.

Effective Control is Possible

“Growers looking for a long-lasting solution to a wide variety of corn and cotton pests can now use DuPont™ Prevathon® insect control, powered by DuPont™ Rynaxypyr®, to get the job done effectively,” says Lars Swanson, portfolio manager, DuPont Crop Protection.

In addition to corn earworm, the breakthrough worm control provided by Prevathon® delivers excellent protection against European corn borer, beet armyworm, fall armyworm, tobacco budworm, saltmarsh caterpillar, southern armyworm and western yellowstriped armyworm.

“A single application of Prevathon® can protect crops from costly insect damage for as long as 21 days on treated foliage,” adds Swanson. “When you consider the marketability and yield lost to a pest like cotton bollworm /corn earworm, the return on investment for one Prevathon® application is well worth it.”

Value of Flexibility

Cotton and corn growers will also benefit from increased flexibility when using Prevathon®, says Dan Sherrod, product development manager, DuPont Crop Protection.

Field trials have demonstrated that Prevathon® provides outstanding worm control in conventional cotton and corn crops (including seed corn production), even under heavy pest pressure, resulting in quality crops that yield greater value at market.

IPM Strategies That Work

While these unrelenting pest pressures can dishearten growers already beleaguered by unpredictable weather conditions, IPM practices that incorporate products including Prevathon® can help overcome the challenge.

Prevathon® provides powerful, long-lasting residual activity for fewer seasonal applications, controlling the most challenging pests with an excellent environmental profile. Replacing the multiple spray applications required by other insecticide programs with Prevathon® enhances grower profitability and is an important part of an effective IPM program.

“These pests can rapidly devastate an entire field,” adds Sherrod. “One of the benefits of Prevathon® is its ability to stop pest feeding almost immediately after they feed. Its unique mode of action ends the damage quickly, so crops are protected.”

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