2008 News Releases

Cobra® Herbicide PHI Reduced in Peanuts

Amended label means more flexibility for farmers especially with Palmer pigweed concerns

April 29, 2008

WALNUT CREEK, CA (April 29, 2008)—The Environmental Protection Agency (EPA) has approved an amended label for Cobra® Herbicide from Valent U.S.A. Corporation. With the amended label, Cobra's pre-harvest interval (PHI) for peanuts is reduced from 90 days to 45 days.

Jeff Smith, Valent field market development specialist, said the reduced PHI is especially important to peanut farmers with Palmer pigweed problems.

"Failure to use an effective preemergence herbicide will lead to Palmer pigweed emergence," Smith said. "This is especially problematic in peanuts because ALS herbicides are not a reliable postemergence option with the presence of ALS-resistant pigweed. The reduced PHI for Cobra gives peanut farmers better application flexibility to combat emerged Palmer pigweed."

The best way to prevent Palmer pigweed from becoming an issue is to start with a solid foundation, Smith said.

"A preemergence application of Valor® Herbicide is critical to reducing Palmer pigweed emergence in peanuts," Smith said. "Cobra should be used primarily to clean up escaped pigweed in the event of dry weather." 

Because Cobra has a different mode of action, it is an outstanding resistance management tool for peanut farmers with ALS- or glyphosate-resistant pigweed.

In addition to Palmer pigweed, Cobra controls a broad spectrum of weeds such as Florida pusley, copperleaf, eclipta, morningglories, nightshades, prickly sida, ragweeds, spurges, tropic croton and wild poinsettia.

Even with the shorter PHI, peanut farmers can still use Cobra without worrying about carryover into a rotated crop.

Cobra is part of the strong line-up of peanut products from Valent U.S.A. Corporation including Danitol® Insecticide, Select Max® Herbicide with Inside Technology™ and Valor Herbicide.

Valent U.S.A. Corporation markets and sells herbicides, fungicides, insecticides, bioinsecticides, insect growth regulators, nematicides, baits and plant growth regulators for the agricultural, horticultural, turf and ornamental markets.

For more information about Cobra, Valent U.S.A. Corporation or Valent's full product line, call 800-6-VALENT (682-5368) or visit the Valent Web site at www.valent.com.