Application Methods

Jump to: Broadcast High-volume Foliar Low-volume Basal Basal Cut-stump

Broadcast

Broadcast applications are ideal for treating large, open areas where target weed or brush species are scattered throughout. Depending on the product, broadcast applications can be made by ground or by air.

Cleaning up moderate to dense weed and brush infestations (>150 plants per acre)
Treating large, open areas

Always read and follow label directions
Keep ground-rig booms high enough to clear foliage and provide suitable coverage, but low enough to minimize the chance of drift
Calibrate equipment to ensure precise application, sound stewardship and economical use of herbicide
Maintain constant ground speed and sprayer pressure
Apply an adequate total spray volume to ensure good coverage
Foam markers or GPS guidance systems can help avoid skips or excessive overlaps
Mature brush stands require aerial application

Most Corteva Agriscience Range & Pasture herbicides are labeled for broadcast applications. Visit the individual product page or consult the product specimen label for mixing and application instructions.

High-volume Foliar

High-volume foliar (leaf spray) applications can help you quickly and efficiently take out emerging brush problems before they become bigger — and more-expensive — headaches. Consider high-volume foliar for multi-stem species, such as multiflora rose, sapling trees or for protecting and maintaining valuable fence lines.

Controlling light to moderate brush stands (<150 plants per acre)
Treating small trees, vines, bushes with canes or stems, such as multiflora rose, or low-growing shrubs, such as buckbrush
Stopping encroaching weeds and brush around pasture perimeters or scattered across grazing areas
Clearing brush and/or weeds in fencelines

Always read and follow label directions
Apply directly to the target plant’s foliage
Spray plants from all sides until wet
Complete coverage is critical for success
Delay treatment until brush is fully leafed out in the spring and actively growing
Delay treatment after mowing or shredding for several weeks or even until the following season to allow adequate regrowth and improved herbicide uptake
Treat when the plant is healthy (not stressed by drought or other conditions)
To improve herbicide uptake, include 1 quart of surfactant per 100 gallons of spray mix

Use Remedy® Ultra herbicide alone when woody species are your primary targets (see Tank-Mix Guide below).
Tank-mix Remedy Ultra with GrazonNext® HL herbicide (see Tank-Mix Guide below) for broad-spectrum control of woody plants and broadleaf weeds, such as in fencelines or around buildings. Surmount™ hebicide alone gives you another option for broad-spectrum control of brush and broadleaf weeds.

Use Chaparral™ herbicide when multiflora rose, locust, buckbrush or blackberry is your primary target
Use Sendero® herbicide alone, or tank-mix with Remedy® Ultra or Tordon® 22K herbicide when mesquite is your primary target. See mesquite in Weed/Brush Identification for specific recommendations.

High-Volume Foliar Tank-Mix Guide Broad-Spectrum Brush/Weed Control Mix
Sprayer Size	Remedy Ultra (0.5%)	GrazonNext HL (0.25%)	Surfactant (0.5%)
1 gallon	4 teaspoons	2 teaspoons	4 teaspoons
3 gallons	2 fluid ounces	1 fluid ounce	2 fluid ounces
5 gallons	3.2 fluid ounces	1.6 fluid ounces	3.2 fluid ounces
10 gallons	6.4 fluid ounces	3.2 fluid ounces	6.4 fluid ounces
25 gallons	1 pint	8 fluid ounces	9 fluid ounces
50 gallons	1 quart	1 pint	1 pint
Apply enough spray to thoroughly and uniformly wet weed foliage but not to the point of runoff.

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Low-volume Basal

Low-volume basal applications give you the ability to quickly and easily control small (less than 6 inches in diameter), emerging brush plants before they become more serious problems. Because you control only the individual plants you choose, these applications are ideal for selectively managing brush stands. Best of all, you can make these applications any time of year, as long as snow or standing water doesn’t prevent proper application.

Effective control of individual brush plants and small trees
Use on species with trunks less than 6 inches in diameter at tree base
Treating mild to moderate brush infestations in pastures
Clearing fence lines
Year-round treatment of woody species

Always read and follow label directions
Apply enough spray to wet the lower 15 to 20 inches of the trunk, including the root collar
Do not spray to the point of runoff
Treat any time of year, except when snow or water prevent spraying to the groundline

Remedy^® Ultra herbicide or PastureGard^® HL herbicide: Tank-mix with a commercial based oil (see mixing chart below).

Low Volume Basal Tank-Mix Guide Remedy Ultra Herbicide Plus Oil-Based Carrier
Sprayer Size	25% Solution (25% Remedy Ultra or PastureGard HL + 75% Oil-Based Carrier)
1 gallon	1 qt. Remedy Ultra or PastureGard HL + 3 qt. oil-based carrier
3 gallons	3 qt. Remedy Ultra or PastureGard HL + 9 qt. (2 gal., 1 qt.) oil-based carrier
20 gallons	5 gal. Remedy Ultra or PastureGard HL + 15 gal. oil-based carrier
50 gallons	12.5 gal. Remedy Ultra or PastureGard HL + 37.5 gal. oil-based carrier

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Basal Cut-stump

When mechanically removing trees or other woody plants, it’s important you treat the stumps to prevent resprouting. Basal cut-stump applications kill the stump for good.

Preventing resprouts on mechanically controlled brush
Killing stumps for good
Year-round use
Light to moderate brush densities

Always read and follow label directions
Spray sides of stump, including any roots above the soil surface, and the outer portion of the cut surface, including the cambium ring along the inner bark
Thoroughly wet the stem and root collar area, but not to the point of runoff
Treat any time of year, as long as snow or water doesn’t prevent proper application

Remedy^® Ultra herbicide or PastureGard^® HL herbicide: Tank-mix with a commercial basal oil or other oil-based carrier (see mixing chart below).

Basal Cut Stump Tank-Mix Guide
Sprayer Size	25% Solution (25% Remedy Ultra or PastureGard HL + 75% Oil-Based Carrier)
1 gallon	1 qt. Remedy Ultra or PastureGard HL + 3 qt. oil-based carrier
3 gallons	3 qt. Remedy Ultra or PastureGard HL + 9 qt. (2 gal., 1 qt.) oil-based carrier
20 gallons	5 gal. Remedy Ultra or PastureGard HL + 15 gal. oil-based carrier
50 gallons	12.5 gal. Remedy Ultra or PastureGard HL + 37.5 gal. oil-based carrier

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Label precautions apply to forage treated with Chaparral or GrazonNext HL and to manure from animals that have consumed treated forage within the last three days. Consult the label for full details. ™

™ ®Trademark of Corteva Agriscience and its affiliated companies. Surmount and Tordon 22K are Restricted Use Pesticides. Chaparral, GrazonNext HL and Sendero 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. State restrictions on the sale and use of Remedy Ultra apply. Consult the label before purchase or use for full details.Always read and follow label directions. © 2021 Corteva.

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