HighNoon Herbicide: A Tool for Sound Stewardship

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Wyoming showcase with HighNoon field sign

HighNoon® herbicide from Corteva Agriscience provides ranchers, land managers and county noxious weed specialists with the flexible tool they need to manage the toughest broadleaf weeds across the diverse western rangeland region.

Stewarding the land, water and other natural resources in geographies where land-use goals are as unique as the soil maps, elevation and habitat can present unique challenges. HighNoon herbicide simplifies land stewardship, livestock grazing and roadside and utility right-of-way maintenance.

“In many states where noxious and invasive weeds pose the primary broadleaf weed threat, there is significant crossover among rangeland, pasture, roadsides and other noncrop use sites,” explained John Kalthoff, Category Lead at Corteva Agriscience. “Ranchers, county noxious weed directors and vegetation managers working on roadsides, utility substations or rights-of-way need a weed control option that simplifies the job. HighNoon herbicide does that — without sacrificing results.”

HighNoon herbicide contains the same active ingredients as TerraVue® herbicide, providing a single product that controls broadleaf weeds, delivers residual weed control and stops several undesirable woody species — but with application flexibility across a wide range of sites.

It also supports an abundant high-quality forage base by taking out some of the toughest-to-control broadleaf weeds and woody plants, including biennial thistles, Palmer amaranth, pigweed, buckbrush and several others.

Enhancing annual grass control programs

Winter annual grasses across many Western states pose a threat against varying land-use goals. Whether it’s ventenata, medusahead or cheatgrass (downy brome), dealing with these species has grown in importance among rangeland managers.

These grasses offer minimal forage value to livestock or wildlife, crowd out perennial forage grasses, create monocultures ill-suited for grazing or habitat, and pose a serious wildfire threat. Treatment programs can be effective, but most leave bareground results that yield space for broadleaf weeds and other invasive species to develop.

HighNoon herbicide provides tank-mix flexibility with most annual grass control products, adding a critical broadleaf weed control component to these programs.

“HighNoon herbicide plays an important role in integrated programs designed to reclaim rangeland lost to winter annual grasses,” Kalthoff said. “Often, these programs incorporate reseeding with competitive perennial forage grasses. Including HighNoon herbicide helps keep broadleaf weeds at bay until the newly seeded grasses take off.”

HighNoon herbicide is available throughout the western rangeland region, specifically west of the Missouri River in North Dakota and South Dakota, as well as Montana, Wyoming, Colorado, Utah, Idaho, New Mexico and Nevada, and the eastern two-thirds of Washington and Oregon. Visit HighNoonHerbicide.com to learn more.

Under normal field conditions, HighNoon® and TerraVue® are nonvolatile. HighNoon and TerraVue have no grazing or haying restrictions for any class of livestock, including lactating dairy cows, horses (including lactating mares) and meat animals prior to slaughter. Label precautions apply to forage treated with HighNoon or TerraVue and to manure and urine from animals that have consumed treated forage. HighNoon and TerraVue are not registered for sale or use in all states. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your state. Consult the label for full details. Always read and follow label directions.


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