RANGE & PASTURE EASTERN Ranchers Guide
Visit us at rangeandpasture.com
Choose the Right Tools.......................................................................................................4-5 Weed Specific Recommendations...................................................................................6-9 Brush Specific Recommendations.......................................................................................10 Annual and Perennial Grasses Planting Guidelines.........................................................11 UltiGraz SM Pasture Weed & Feed...........................................................................................13 Application Methods..............................................................................................................15 Animal and Hay Handling......................................................................................................16 Mow or Spray Brush.................................................................................................................17
This guide is published by Corteva Agriscience to provide you with helpful information on managing weeds and brush on grazing lands, grass hayfields and Conservation Reserve Program (CRP) acres.
Common Measurement Conversions
1 gallon (gal)
= 4 quarts (qt)
1 gallon (gal)
= 8 pints (pt)
1 gallon (gal)
= 128 fluid ounces (fluid oz)
1 quart (qt) 1 quart (qt)
= 2 pints (pt)
= 32 fluid ounces (fluid oz) = 36 fluid ounces (fluid oz) = 24 fluid ounces (fluid oz)
2.25 pints (pt)
1.5 pints (pt)
1.25 pints (pt)
= 20 fluid ounces (fluid oz)
1 pint (pt)
= 16 fluid ounces (fluid oz) = 12 fluid ounces (fluid oz)
0.75 pint (pt)
1 pound (lb)
= 16 ounces (oz.)
For more information contact your Corteva Range & Pasture Specialist. Find your specialist at www.rangeandpasture.com/specialist For a more comprehensive look at weeds and additional recommendations, visit www.rangeandpasture.com/weedid
Choose the Right Tools Herbicide
• Attributes
DuraCor ® herbicide is the most extensive pasture weed control available. DuraCor ® herbicide brings cattle producers the broadest-spectrum broadleaf weed control available controlling more than 140 weeds. DuraCor herbicide has flexible application options including broadcast by ground or by air, spot treatments and the ability to mix with liquid fertilizer or on dry fertilizer with UltiGraz in select states. Broad spectrum weed control that allows you to keep your White clover and Annual lespedeza. NovaGraz ™ herbicide is a game changing product that preserves white clover and annual lespedeza for an abundant, diverse, high-quality forage that improves soil fertility and livestock production. NovaGraz, with no soil residual activity, controls a broad spectrum of weeds in permanent grass pastures, rangeland, hayfields and Conservation Reserve Program (CRP) acres.
Broad spectrum residual herbicide. Containing 2,4-D Choline and Picloram, GrazonPD3 ™ herbicide is backed by trusted and proven active ingredients, providing peace of mind.
GrazonPD3 ™ is a federally Restricted Use Pesticide.
Making pasture improvement easy. Making pasture improvement easy. GrazonNext ® HL herbicide is an easy way to get broadleaf weeds out of the way of pasture production. It provides a simple, lasting solution for tough pasture and rangeland weeds.
Specialized broad-spectrum weed, brush and grass management.
Chaparral ™ herbicide is the simple answer for several significant, unique needs, like reducing the impact of toxic fescue through seedhead suppression and improving hay quality by removing Pensacola bahiagrass from bermudagrass.
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Choose the Right Tools Herbicide
• Attributes
Pasture weed and brush control with a single product. PastureGard ® HL herbicide gives cattle producers one flexible product that takes out broadleaf weeds and brush.
Simply the best choice against brush. Remedy ® and Remedy ® Ultra herbicides provide convenient, flexible, long-lasting control of more than 35 brush species. Whether protecting grazing acres from encroaching brush, maintaining valuable fence lines or reclaiming overgrown pastureland, Remedy and Remedy Ultra gets the job done. A great tank mix for DuraCor ® , GrazonNext ® HL, or Chaparral ™ herbicides, making a wide range of control options in one simple pass. Best choice for broad spectrum brush control in fence lines. Gentle to desirable grasses while controlling a broad spectrum of weeds. Surmount ® is a federally Restricted Use Pesticide.
Spiny Amaranth
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Weed Specific Recommendations B = Broadcast, A = Aerial, I = Individual Plant Treatment Remember to always add in a surfactant. With NovaGraz TM herbicide, using 1% v/v pure Methylated Seed Oil (MSO) is required.
Application Method
Timing + Handling
Weed
Product
Rate
DuraCor ® herbicide
18 to 20 fluid oz/A OR 1% v/v
Treat when young and small, long before this plant goes to reproduction. Coverage is key.
Spiny Amaranth
B, A, IPT
GrazonNext ® HL herbicide
28 to 32 oz/A OR 1% v/v
16 to 20 fluid oz/A OR 1% v/v
DuraCor
Treat in early spring when plant is in rosette stage or small bolting.
Common Burdock
24 fluid oz/A 1% v/v MSO per acre is required in the tank 16 to 20 fluid oz/A OR 1% v/v
B, A, IPT
NovaGraz ™
Treat when plant is starting to bolt and well before flowering. Consider treating in late fall and early winter at emergence. Coverage is key.
DuraCor
B, A, IPT
24 to 32 oz/A OR 1% v/v
GrazonNext HL
Buttercup
24 fluid oz/A 1% v/v MSO per acre is required in the tank
Treat when plant is in rosette stages or small bolting.
NovaGraz ™
B, A, IPT
Treat when plant is just starting to bolt. Coverage is key.
16 to 20 fluid oz/A OR 1% v/v
DuraCor
Wild Carrot, Queen Ann’s Lace
B, A, IPT
24 fluid oz/A 1% v/v MSO per acre is required in the tank 16 to 20 fluid oz/A OR 1% v/v
Treat when plant is in rosette stages or small bolting.
NovaGraz ™
DuraCor
24 to 32oz/A OR 1% v/v
GrazonNext HL
Treat in late fall to early winter as plants germinate.
Common Chickweed
B, A, IPT
24 fluid oz/A 1% v/v MSO per acre is required in the tank 8
NovaGraz ™
Weed Specific Recommendations B = Broadcast, A = Aerial, I = Individual Plant Treatment Remember to always add in a surfactant. With NovaGraz TM herbicide, using 1% v/v pure Methylated Seed Oil (MSO) is required.
Application Method
Timing + Handling
Weed
Product
Rate
Treat when plant is in rosette stage or shortly after. Coverage is key.
16 to 18 fluid oz/A OR 1% v/v
DuraCor ® herbicide
B, A, IPT
Chicory
24 fluid oz/A 1% v/v MSO per acre is required in the tank
Treat in late fall to early winter as plants germinate.
B, A, IPT
NovaGraz ™
16 to 20 fluid oz/A OR 1% v/v
Treat when plants are young and first emerging.
B, A, IPT
DuraCor ®
GrazonNext ® HL herbicide
28 to 32oz/A OR 1% v/v
Cocklebur, Common
Treat when plants are young and first emerging.
B, A, IPT
24 fluid oz/A 1% v/v MSO per acre is required in the tank
NovaGraz ™
16 fluid oz/A OR 1% v/v
Dandelion DuraCor
B, A, IPT
Treat prior to flowering.
16 fluid oz/A OR 1% v/v
DuraCor
B, A, IPT
Treat prior to flowering.
Deadnettle, Purple and Henbit
24 fluid oz/A 1% v/v MSO per acre is required in the tank
NovaGraz ™
B, A, IPT
Treat prior to flowering.
Treat at 8-12" plant height for optimum coverage. Increase PastureGard HL rate to 16 oz/A for larger plants.
16 fluid oz/A + 12 oz/A OR 1% v/v each
DuraCor ® + PastureGard ® HL
Dog Fennel
B, IPT
16 to 20 fluid oz/A OR 1% v/v
Treat prior to bolting and flowering.
Curly Dock
DuraCor
B, A, IPT
DuraCor ® + Remedy ® herbicide
20 fluid oz/A + 16 oz (OR 1% v/v each)
Treat when plants are smaller than 6’’ and do not cut them till completely wilted down. Must be
Hemp Dogbane
B, IPT
28 to 32oz/A OR 2%
treated prior to flowering.
PastureGard
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Weed Specific Recommendations B = Broadcast, A = Aerial, I = Individual Plant Treatment Remember to always add in a surfactant. With NovaGraz TM herbicide, using 1% v/v pure Methylated Seed Oil (MSO) is required.
Application Method
Timing + Handling
Weed
Product
Rate
DuraCor ® herbicide + 2, 4-D GrazonNext® HL herbicide
16 fluid oz/A + 16 oz
Spray when plant is young and tender for best results.
B, A, IPT
32oz/A OR 1% v/v of either
Goldenrod
24 fluid oz/A 1% v/v MSO per acre is required in the tank 18 to 20 fluid oz/A OR 1% v/v 24 fluid oz/A 1% v/v MSO per acre is required in the tank 18 to 20 fluid oz/A OR 1% v/v 16 to 20 fluid oz/A OR 1% v/v
Spray when plant is young and tender for best results.
NovaGraz ™
B, A, IPT
Treat as plant is starting to bolt. Treat as plant is starting to bolt.
DuraCor ®
B, A, IPT
Poison Hemlock
NovaGraz ™
B, A, IPT
Horsenettle DuraCor
B, A, IPT
Treat at first full bloom.
Treat when plant is vegetative and not reproductive. Treat when plant is vegetative and not reproductive.
DuraCor
B, A, IPT
Tall Ironweed
24 fluid oz/A 1% v/v MSO per acre is required in the tank
B, A, IPT
NovaGraz ™
Treat in the spring when plant is small and prior to plant becoming reproductive or wait for plant to finish seeding and treat before first frost.
Sericea Lespedeza
PastureGard ® HL herbicide
20 to 24 oz/A OR 1% v/v
B or IPT
Treat before plant is 6’’ and vegetative. Use a MSO surfactant. Treat before plant is 6’’ and vegetative. Use an MSO surfactant.
DuraCor
20 fluid oz/A
B, A, IPT
Marshelder
24 fluid oz/A 1% v/v MSO per acre is required in the tank
B, A, IPT
NovaGraz ™
Common Milkweed
PastureGard ® HL herbicide
28 to 48 oz/A OR 2%
Treat when plant is small and well before flowering.
B or IPT
Treat when plant is young.
18 to 20 fluid oz/A
B, A, IPT
Perilla Mint
DuraCor ®
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Weed Specific Recommendations B = Broadcast, A = Aerial, I = Individual Plant Treatment Remember to always add in a surfactant. With NovaGraz TM herbicide, using 1% v/v pure Methylated Seed Oil (MSO) is required.
Application Method
Timing + Handling
Weed
Product
Rate
This plant must not be cut prior to it being treated. Treat before it becomes reproductive and do not cut it for at least 8 weeks post treat. Treat when plants are small and before they become reproductive. Emerging in late fall, consider a late fall control option. Treat when plants are small and before they become reproductive. Emerging in late fall, consider a late fall control option.
Maypop Passion Flower
PastureGard ® HL herbicide
32 to 48 oz/A OR 1% v/v
B, A, or IPT
DuraCor herbicide 18 to 20 oz/A OR 1% v/v
B or IPT
Plantain, Buckhorn and Broadleaf
24 fluid oz/A 1% v/v MSO per acre is required in the tank
NovaGraz ™
B or IPT
16 to 20 fluid oz/A OR 1% v/v
DuraCor
24 fluid oz/A 1% v/v MSO per acre is required in the tank
Ragweed, Common
Treat prior to plants becoming productive.
B, A, IPT
NovaGraz ™
GrazonNext ® HL herbicide
28 to 32 oz/A OR 1% v/v
GrazonNext HL 32 oz/A
Treat prior to plant putting seeds (pepper seed looking) along the branches.
Red Sorrel
B, A, IPT
Chaparral ™ herbicide
2.5 oz/A
DuraCor
18 to 20 fluid oz/A
Treat plants when they are young in the early winter if possible or in early summer at the bud stage
Thistle: Canadian
28 to 32 oz/A OR 1% v/v 2.0 to 2.5 oz/A OR 1% v/v
GrazonNext HL
B, A, IPT
Chaparral
Treat plants when they are young and in rosette stage.
16 to 20 fluid oz/A OR 1% v/v
B, A, IPT
DuraCor ®
Thistle: Bull, Plumless, Musk
24 fluid oz/A 1% v/v MSO per acre is required in the tank
Treat plants when they are young and in rosette stage.
B, A, IPT
NovaGraz ™
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Brush Specific Recommendations B = Broadcast, A = Aerial, I = Individual Plant Treatment Remember to always add in a surfactant. With NovaGraz TM herbicide, using 1% v/v pure Methylated Seed Oil (MSO) is required.
Application Method
Timing + Handling
Weed
Product
Rate
DuraCor ® + Remedy ® herbicides
20 oz/A + 16 oz/A
OR 1% v/v + 1% v/v
Treat after flowering and prior to first frost.
Multiflora Rose
Chaparral ™ + Remedy herbicides
2.5 oz/A + 16 oz/A
B, A, IPT
Coverage is key.
Chaparral ™ + PastureGard ® HL herbicides
2.5 oz/A + 20 oz/A
DuraCor + Remedy
20 oz/A + 16 oz/A
OR 1% v/v + 1% v/v OR 1% v/v + 1% v/v
Treat after fruit drop up to first frost.
Chaparral ™ + Remedy Chaparral ™ + PastureGard
2.5 oz/A + 16 oz/A 2.5 oz/A + 20 oz/A
Blackberries
B, A, IPT
Coverage is key
Virgin stands are easiest to control. Coverage is key. Use an NIS surfactant. If trees have previously been mowed, expect 2-4 applications. Target trees when they are at full, mature foliage and not in reproductive stages. Use an NIS surfactant. Coverage is key.
DuraCor + Remedy
20 fluid oz/A + 16 oz/A
Honey or Black Locust
B, A, IPT
DuraCor + Tordon ® 22K
20 fluid oz/A + 16 oz/A
DuraCor ® + PastureGard ® HL
1% v/v + 1% v/v
Russian or Autumn Olive
IPT
Chaparral ™ + PastureGard
1% v/v + 1% v/v
DuraCor ® + PastureGard
1% v/v + 1% v/v
Target trees when they are at full, mature foliage, and not in reproductive stages. Use an NIS surfactant. Coverage is key.
IPT
Chinese Privet
Chaparral ™ + PastureGard
1% v/v + 1% v/v
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Tordon ® 22K is a federally Restricted Use Pesticide.
Annual and Perennial Grasses Planting Guidelines
Annual and Perennial Grasses Planting Guidelines Planting Guidelines for Fescue, Orchardgrass, Timothy, and Annual Ryegrass
Post Emergence Applications
Pre-Plant Applications
Product
Rate/Acre
Growth Stage When Tolerant
Recommended Days Prior to Planting
Comments
Comments
Applications made closer to the day of planting may result in slower seedling development but have little effect on stand density. Applications made closer to the day of planting may result in slower seedling development but have little effect on stand density. Applications made closer to planting date may reduce stand density or even prevent establishment completely.
12-16 fl oz
V3
12-20 fl oz once tillering
DuraCor ® herbicide
15 days
16-20 fl oz
Tillering
NovaGraz ™ herbicide
24-48 fl oz/A once tillering
24 fl oz
14 days
Tillering
Use not recommended on tall fescue, timothy, or annual ryegrass.
Chaparral ™ herbicide
2 oz
30 days
Tillering
Great for control of existing weeds but lacks long-term control from soil residual.
With sufficient soil moisture V3 may be reached within 30 days after emergence.
PastureGard ® HL herbicide
Day of Planting
24 oz
V3
13
Planting Guidelines for Sorghum-Sudan, Teff, Crabgrass, and Pearl Millet
Post Emergence Applications
Pre-Plant Applications
Product
Rate/Acre
Recommended Days Prior to Planting
Comments
Comments
Applications made closer to the day of planting may result in slower seedling development and reduction in yield.
Post-emergence applications to warm-season annual grasses is not recommended.
12-16 fl oz
30 days
DuraCor ® herbicide
16-20 fl oz
45 days
Applications made closer to the day of planting may result in slower seedling development and reduction in yield.
Post-emergence applications to warm-season annual grasses is not recommended.
NovaGraz ™ herbicide
24 fl oz
14 days
Applications made closer to planting date may reduce stand density or even prevent establishment completely.
Chaparral ™ herbicide
2 oz
45 days
PastureGard ® HL herbicide
Day of Planting
Great for control of existing weeds but lacks long-term control from soil residual.
24 oz
NovaGraz Herbicide Application — What to Expect
UltiGraz SM Pasture Weed & Feed One Pass, Better Grass SM
How UltiGraz SM Pasture Weed & Feed Works UltiGraz SM allows you to fertilize your grass not your weeds—Conveniently. Herbicide in a concentrated solution is sprayed on dry fertilizer granules during the blending process. The combined dry fertilizer and herbicide are applied through spreader trucks or fertilizer buggies similarly to how dry fertilizer alone would be applied. From there, rainfall moves the herbicide-fertilizer solution into the soil. Weed control is almost entirely dependent on the soil residual activity of the herbicide and root uptake of the weeds. UltiGraz offers control of select broadleaf pasture weeds. Depending on application timing and weed species, weed control from UltiGraz Pasture Weed & Feed may vary from that of foliar applications.
• Apply through Spreader Trucks or Fertilizer Buggies • Self-Apply on Your Schedule if Custom Applicationis not Available • Fits Large and Small Operations • Calibration Determined by Fertilizer Application
Benefits • Save Time and Extra Application Cost—It’s One Trip • Fewer Weather Delays • Reduced Risk of Off-Target Movement • No Spray Equipment Needed
15
1
6
2
3
4
5
Application Methods
Aerial Application–(BT) Spraying crop protection products onto a crop from an agricultural aircraft. Ground Broadcast Foliar–(BT) Using a truck, tractor, or similar equipment with either a boomless or boom sprayer the treatment is uniformly applied across the pasture. Well-suited for treatment to large areas especially when targeting low growing weeds and brush. Dry Fertilizer Impregnated Pasture weed and feed; harness the win-win power of both technologies. In approved states, get pasture weed control and fertilization in a single step via dry fertilizer impregnated with DuraCor ® , GrazonNext ® HL or Chaparral ™ herbicide. Directed Spot Foliar–(IPT) or (BT) Generally, the most widely used among all treatment options and may be applied either as a broadcast or directed, spot treatment. This treatment is applied to the foliage of the target vegetation and can be used to control any combination of grasses, sedges, broadleaf weeds, and woody plants based on herbicide selection and/or application method. Basal Bark–(IPT) Basal bark treatments are used to control unwanted woody plants up to 6 inches in diameter. This method can be used to selectively control unwanted woody plants with little to no damage to surrounding vegetation. Cut Stump–(IPT) Used on any size woody stem to control re-sprouts after a hand cutting operation. This treatment should be applied to the cut surface immediately after hand-cutting. This treatment protects the initial cutting investment by reducing or eliminating future maintenance costs. (IPT) Individual Plant Treatment (BT) Broadcast Treatment
1
2
3
4
5
6
17
Animal and Hay Handling Restriction Guide Time Intervals (in Days)
Other Animals*
Removal Before Slaughter
Lactating Dairy
Hay Harvest
Beef
Herbicide
DuraCor ®
0
0
0
0
14
0
0
0
0
0
Chaparral ™
0
0
0
0
14
GrazonNext ® HL
0
0
0
0
14
PastureGard ® HL
7
0
0
3
30
GrazonPD3 ™
3
0
0
3
14
NovaGraz ™
Next Growing Season
0
0
0
14
Remedy ®
Remedy ® ULTRA
0
0
0
2
14
14
0
0
3
-
Surmount ®
Other animals include: horses, goats, and sheep. All above info was pulled from labels on the Corteva website on 10.9.2023
Surmount ® and GrazonPD3 ™ are federally Restricted Use Pesticides.
18
Mow or Spray Brush
As a rule, mowing brush makes it more difficult to control with foliar herbicides. Mowing tends to increase a plant’s rootstock and decrease foliage. Foliage is the gateway for the herbicide into the plant. With more foliage, more herbicide can be absorbed and translocated to the roots. With less foliage, less herbicide can be absorbed. Because mowing usually creates more rootstock to kill, and a smaller gateway to reach it, you get poorer control after mowing. This is true even when the foliar herbicide is applied several months after mowing, as the table below indicates. If you choose to spray regrowth from brush that’s been mowed or shredded, wait until trees are 3 to 4 feet tall and shrubs or vines are at least 2 feet tall. Notes It’s usually easier to control small, scattered brush than big, dense brush. And individual plant leaf sprays usually are the quickest and cheapest methods of individual plant tre atment.
Effect of Mowing Prior to Spraying with Remedy ® herbicide on Control of Blackberry Complex (Remedy Applied at 32 ounces/A Plus Surfactant)
Number of Months After Mowing That Briars Were Sprayed
Percent Control
Mowing Date
Spraying Date
Not Mowed
August 4
Not Mowed
88
April 3
August 4, following year
17 months after mowing
72
June 27
August 4, following year
13 months after mowing
61
October 16 August 4, following year
9.5 months after mowing
63
February 3
August 4, same year
6 months after mowing
65
March 1
August 4, same year
5 months after mowing
66
April 1
August 4, same year
4 months after mowing
61
May 2
August 4, same year
3 months after mowing
50
June 1
August 4, same year
2 months after mowing
42
July 2
August 4, same year
1 months after mowing
17
Source: Dr. Bruce Pinkerton, Clemson University
19
@ CortevaPastures @ CortevaPastures @ CortevaPastures
To find your local Corteva Range and Pasture Specialist visit rangeandpasture.com/specialist
Visit us at rangeandpasture.com TM ® Trademarks of Corteva Agriscience and its affiliated companies. Surmount ® ,Tordon ® 22K and GrazonPD3 ™ are federally Restricted Use Pesticides.
This reference guide is not intended as a substitute for the product label for the product(s) referenced herein. Product labels for the above product(s) contain important precautions, directions for use, and product warranty and liability limitations, which must be read before using the product(s). Applicators must be in possession of the product label(s) at the time of application. Always read and follow all label direction and precautions for use when using any pesticide alone or in tank-mix combinations. This Weed Identification Guide is provided for reference purposes only and is not a substitute for the product label or MSDS. Federal law requires that all pesticide products be used in accordance with the label attached to the product container. The information contained in this Weed Identification Guide is presented in good faith, and Corteva Agriscience™ assumes no liability for the information and makes no expressed or implied representations or warranties. When using NovaGraz ™ herbicide white clover and annual lespedeza exhibit some initial injury (such as lodging and loss of vigor) but recover. Under normal field conditions DuraCor ® is non-volatile. DuraCor, GrazonNext ® HL, Milestone ® and Chaparral ™ herbicides 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 DuraCor, GrazonNext HL and Chaparral to manure and urine from animals that have consumed treated forage. Except for lactating dairy animals, there are no grazing restrictions following application of Remedy ® . Consult the label for full details. GrazonNext HL is not for sale, distribution, or use in New York State and San Luis Valley of Colorado. Some states require an individual be licensed if involved in the recommendation, handling or application of any pesticide. Consult your local Extension Office for information regarding licensing requirements. Not all products listed in this guide are 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 and Remedy ® Ultra apply. Consult the label before purchase or use for full details. GrazonPD3 ™ is not for sale, distribution or use in Nassau and Suffolk Counties in New York State. Always read and follow label directions. ©2025 Corteva. RP-30528 COR (12/25)
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