crop-chem-docs/corpus/epa_ppls/279-3561.md

# CHISUM HERBICIDE

- EPA Reg No: **279-3561**
- Registrant: FMC CORPORATION 
- Signal word: Caution
- Active ingredients: Chlorsulfuron (15%); Metsulfuron-methyl (48%)
- Label accepted: 2008-07-11
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/067760-00080-20080711.pdf

---
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 
WASHINGTON, D.C. 20460 
Ms. Carrie Tackema 
Cheminova Inc. 
1700 Route 23, Suite 300 
Wayne,NJ07470 
OFFICE OF 
PREVENTION. PESTICIDES AND 
TOXIC SUBSTANCES 
JUt.. 1 J 2D08 
Subject: Label Notifications for Pesticide Registration Notice 2007-4 
Dear Ms. Tackema, 
The Agency is in receipt of your Applications for Pesticide Notification under Pesticide 
Registration Notice (PRN) 2007-4 dated May 14, 2008 (and corrected labels sent June 11,2008) 
for the following products: 
Metsulfuron-methyl Technical 
Tribenuron-methyl Technical 
Nicosulfuron Technical 
Thifensulfuron-methyl Technical 
Accurate Herbicide 
Nuance Herbicide 
Nic-It Herbicide 
Accurate Extra Herbicide 
Harass Herbicide 
Nimble Herbicide 
Chlorsulfuron Technical 
Chisum HerbiCide 
Report Herbicide 
Report Extra Herbicide 
(EPA Registration Number 4787-50) 
(EPA Registration Number 4787-53) 
(EPA Registration Number 4787-54) 
(EPA Registration Number 4787-56) 
(EPA Registration Number 67760-68) 
(EPA Registration Number 67760-73) 
(EPA Registration Number 67760-74) 
(EPA Registration Number 67760-76) 
(EPA Registration Number 67760-77) 
(EPA Registration Number 67760-78) 
(EPA Registration Number 67760-79) 
(EPA Registration Number 67760-80) 
(EPA Registration Number 67760-81) 
(EPA Registration Number 67760-82) 
The Registration Division (RD) has conducted its review of these requests for their 
applicability under PRN 2007-4 and finds that the label changes requested fall within the scope 
ofPRN 2007-4. The labels submitted with the applications have been stamped ''Notification'' 
and will be placed in our records, along with this letter. 
Please be reminded that 40 CFR Part lS6.140(a)(4) requires that a batch code, lot 
number, or other code identifying the batch of the pesticide distributed and sold be placed on 
nonrefillable containers. The code may appear either on the label (and can be added by non­
notificationJPR Notice 98-10) or durably marked on the container itself

If you have any questions; please call me directly at 703-305-6249 or Steve Schaible of 
my staff at 703-308-9362. 
Sincerely, 
~ 
Linda Arrington 
Notifications & Minor Formulations Team Leader 
Registration Division (7505P) 
Office of Pesticide Programs

EPA 
United States 
Environmental Protection Agency 
Washington, DC 20460 
o Registration 
o Amendment 
IZI Other 
1. CompanylProduct Number 
67760-80 
4. CompanylProduct (Name) 
CHISUMTM Herbicide 
5. Name and Address of Applicant (Include ZIP Code) 
Cheminova lnc. 
Application for Pesticide - Section 1 
2. EPA Product Manager 
James A. Tom kins 
PM# 
25 
6. Expedited Review. In accord 
or identical in composition and labeling to: 
opp Identifier Number 
3. Proposed Classification 
!:8J None o Restricted 
c)(3)(b)(l), my product is similar 
1700 Route 23, Suite 300 
Wayne, NJ 07470 
EPA Reg. No. IJUL 11 2008 
Product Name 
D Check if this is a new address 
Section - n 
o Amendment - Explain below. o Final printed labels in response to Agency letter dated ____ _ 
o ResubmissiDn in respDnse tD Agency letter dated ______ _ o "Me TDo" ApplicatiDn 
D Other - Explain belDw o Notification - Explain below. 
Explanation: Use additional page(s) ifneces Section I and Section II. 
*Contact: Carrie M. Tackema: carrie.tackema@cheminova.com or fax: 973-305-1382 
Section - ill 
I. Material This Product Will Be Packa ed In: 
Child-Resistant Packaging 
o Yes* 
[gJ No 
*Certijication must be 
submitted 
3. LDcatiDn of Net Contents InfDrmatiDn 
[gJ Label r8J Container 
Unit Packaging 
DYes 
I:8J No 
If "Yes" 
Unit Packaging wgt. 
No. per 
container 
4. Size(s) Retail CDntainer 
10 oz. - bulk 
Water Soluble Packaging 
DYes 
[gJ No 
2. Type DfContainer 
[8J Metal 
[8J Plastic 
If "Yes" No. per o Glass 
Package wgt. container 
[8J Paper 
[8J Other (Specify) -
fiber drums Df sacks 
5. Location of Label Directions 
[8J On Label 
o On labeling accompanying product 
6. Manner in Which Label is Affixed to Product [8J Lithograph 
[gJ Paper glued 
[8J Stenciled 
o Other ________________ _ 
Section -IV U L· "v 
1-------------------------------------------------,,;..," .:-,-,-.-'0---------1 
I. CDntact Point (Complete ilems directly below for identification of individllalto be contacled, if necessary, to process this application) . c., (.', ' 
Name Title Telephone)lW (I~,c1ude Area Code) 
Carrie M. TackemaRegulatory Affairs Manager, North America " ,. (, 973-305-6600, X 229 
Certification 6. D2.,t('.t.J:plication Received 
rtify that the statements I have made on this fDrm and all attachments thereto are true, accurate and cDmplete. I acknowledge u j 
. sleading statement may be punishable by fine or imprisonment Dr both under applicable law., ,., " ,. '.' L ,. (St'amped) 
3. Title 
Re ulator Affairs Mana er, North America 
5. Date ,,-,1.''.._'_' 
Ma 5, 2008 ,'-' '-' 
.~~~~~~~~~--~--~----L-~~~~~~--------------~--~~~~~~~-----
EPA Form 8570-1 (Rev. 8-94) PreviDus editions are obsolete White- EPA File Copy (originaJ) Yellow-, \p/-licant Copy

CHISUMTM 
herbicide 
NonFICATfON 
JUL 112008 
For Use on Pastures, Rangeland or Established Grasses on Acres Enrolled in the Conservation 
Reserve Program 
. ACTIVE INGREDIENT: 
Metsulfuron Methyl Methyl 2-[[[[(4-methoxy-6-methyl -1 ,3,5-triazin-2yl)amino]carbonyl] 
amino]sulfonyl]benzoate . 48.0% 
. Chlorsulfuron 2-Chloro~N-[( 4-methoxy-6-methyl-1 ,3 ,5-triazin-2-yl)aminocarbonyl] 
benzenesulfonamide 15.0% 
Other Ingredients: 37.0% 
Total: 100.0% 
EPA Reg. No. 67760-80 EPA EST NO.: 
KEEP OUT OF REACH OF CHILDREN 
CAUTION CAUCION 
Si usted no entiende la etiqueta, busque a alguien para que se la explique a usted en detalle. 
(If you do not understand the label, find someone to explain it to you in detail.) 
IN CASE OF A MEDICAL EMERGENCY INVOLVING THIS PRODUCT, CALL TOLL FREE, 
DAY OR NIGHT, 1-866-303-6950 
Read the entire label before using this product. 
Use only according to label instructions. 
Read the WARRANTY DISCLAIMER, INHERENT RISKS OF USE, and LIMITATION OF 
REMEDIES before buying or using. 
If terms are not acceptable, return product unopened without delay. 
SEE BELOW FOR ADDITIONAL PRECAUTIONARY STATEMENTS AND USE DIRECTIONS 
Manufactured for: 
CHEMINOVA INC. 
1700 Route 23 
Suite 300 
Wayne, NJ 07470 
www.cheminova.us.com 
CHISUMTM is a trademark of Cheminova 
1

FIRST AID 
IF -Call a poison control center or doctor immediately for treatment advice. 
SWALLOWED: -Have person sip a glass of water if able to swallow. 
-Do not induce vomiting unless told to by a poison control center or doctor. 
-Do not give anything by mouth to an unconscious person. 
IF IN EYES: -Hold eye open and rinse slowly and gently with water for 15 to 20 minutes. 
Remove contact lenses, if present, after the first 5 minutes, then continue 
rinsing eye. 
-Call a pOison control center or doctor for treatment advice. 
IF ON SKIN OR -Take off contaminated clothing. 
CLOTHING: -Rinse skin immediately with plenty of water for 15-20 minutes. 
-Call a poison control center or doctor for treatment advice. 
Have a product container or label with you when calling a poison control center or doctor, 
or goinjJ for treatment. Incase of emergency call toll free 1-866-303-6950. 
PRECAUTIONARY STATEMENTS 
HAZARDS TO HUMANS AND DOMESTIC ANIMALS 
CAUTION 
Harmful if absorbed through skin or if swallowed. Causes moderate eye irritation. Avoid contact 
with eyes or clothing. Avoid contact with skin or clothing. Wash thoroughly with soap and water 
after handling and before eating, drinking, chewing gum, or using tobacco. 
PERSONAL PROTECTIVE EQUIPMENT 
Some materials that are chemical resistant to this product are listed below. If you want more 
options follow the instructions for Category A on the EPA chemical resistance category 
selection chart. 
Applicators and other handlers must wear: 
-Long-sleeved shirt and long pants. 
-Chemical Resistant Gloves Category A (such as butyl rubber, natural rubber, neoprene rubber, 
or nitrile rubber): all ~14 mils. 
-Shoes plus socks. 
Follow manufacturer's instructions for cleaning/maintaining PPE. If no such instructions for 
washables, use detergent and hot water. Keep and wash PPE separately from other laundry. 
ENGINEERING CONTROLS STATEMENTS 
When handlers use closed systems, enclosed cabs, or aircraft in a manner that meets the 
requirements listed in the Worker Protection Standard (WPS) for agricultural pesticides [40 CFR 
170.240(d)(4-6)], the handler PPE requirements may be reduced or modified as specified in the 
WPS 
User Safety Recommendations: 
Users should: Wash hands before eating, drinking, chewing gum, using tobacco or using the 
toilet. 
2

ENVIRONMENTAL HAZARDS 
Do not apply directly to water, or to areas where surface water is present, or to intertidal areas 
below the mean high water mark. Do not contaminate water when cleaning equipment or when 
disposing of equipment washwaters. 
IMPORTANT INFORMATION 
PESTICIDE HANDLING 
• Calibrate sprayers only with clean water away from the well site. 
• Make scheduled checks of spray equipment. 
• Assure accurate measurement of pesticides by all operation employees. 
• Mix only enough product for the job at hand. 
- Avoid overfilling of spray tank. 
- Do not discharge excess material on the soil at a single spot in the field or mixing/loading 
station. 
- Dilute and agitate excess solution and apply at labeled rates/uses. 
- Avoid storage of pesticides near well sites. 
DIRECTIONS FOR USE 
It is a violation of Federal law to use this product in a manner inconsistent with its labeling. 
Do not apply this product ina way that will contact workers or othe.r persons, either directly or 
through drift. Only protected handlers may be in the area during application. For any 
requirements specific to your State or Tribe, consult the agency responsible for pesticide 
regulation. 
AGRICULTURAL USE REQUIREMENTS 
Use this product only in accordance with its labeling and with the Worker Protection Standard, 
40 CFR part 170. This Standard contains requirements for the protection of agricultural workers 
on farms, forests, nurseries, and greenhouses, and handlers of agricultural pesticides. It 
contains requirements for training, decontamination, notification, and emergency assistance. It 
also contains specific instructions and exceptions pertaining to the statements on this label 
about personal protective equipment (PPE) and restricted-entry interval. The requirements in 
this box only apply to uses of this product that are covered by the Worker Protection Standard. 
Do not enter or allow worker entry into treated areas during the restricted entry interval (REI) of 
4 hours. 
PPE required for early entry to treated areas that is permitted under the Worker Protection 
Standard and that involves contact with anything that has been treated, such as plants, soil, or 
water, is: . 
-Coveralls. 
·Chemical Resistant Gloves Category A (such as butyl rubber, natural rubber, neoprene rubber, 
or nitrile rubber), all ~14 mils. 
·Shoes plus socks. 
STORAGE AND DISPOSAL 
PESTICIDE STORAGE: Store product in original container only. Do not contaminate water, 
other pesticides, fertilizer, food or feed in storage. 
Pesticide Disposal: 
Nonrefillable containers equal to or less than 5 gallons: 
Do not reuse or refill this container. Offer for recycling if available. Triple rinse container (or equivalent) 
promptly after emptying. Triple rinse as follows: Empty the remaining contents into application equipment 
or a mix tank and drain for 10 seconds after the flow begins to drip. Fill the container ~ full with water and 
3

recap. Shake for 10 seconds. Pour rinsate into application equipment or a mix tank or store rinsate for 
later use or disposal. Drain for 10 seconds after the flow begins to drip. Repeat this procedure two more 
times. 
-Nonrefillable containers greater than 5 gallons: 
Do not reuse or refill this container. Offer for recycling if available. Triple rinse as follows: Empty the 
remaining contents into application equipment or mix tank. Fill the container % full with water. Replace 
and tighten closures. Tip container on its side and roll it back and forth, ensuring at least one complete 
revolution, for 30 seconds. Stand the container on its end and tip it back and forth several times. Turn the 
container over onto its other end and tip it back and forth several times. Empty the rinsate into application 
equipment or a mix tank and store rinsate for later use or disposal. Repeat this procedure two more times. 
CHISUM should be used only in accordance with recommendations on this label or in separate 
published Cheminova recommendations. Cheminova will not be responsible for losses or 
damages resulting from the use of this product in any manner not specifically recommended by 
Cheminova. 
Do not apply this product through any type of irrigation system. 
GENERAL INFORMATION 
CHISUM is recommended for use on land primarily dedicated to the production of pasture, 
rangeland, or established grasses in the Conservation Reserve Program (CRP). This product 
may also be used on selected uncultivated areas (fence rows, farmyards, and rights-of-way) 
directly adjacent to, or which transect or pass through, treated pastures, rangeland, or CRP, 
where grazing or harvesting for animal feed of those uncultivated areas may occur. 
CHISUM is a dispersible granule that controls or suppresses broadleaf weeds and brush in 
pasture, rangeland andCRP. CHISUM is mixed in water or can be preslurried in water and 
added to liquid nitrogen carrier solutions and applied as a uniform broadcast spray. A spray 
adjuvant must be used in the spray mix unless otherwise specified on this label. 
CHISUM is a broad-spectrum herbicide recommended for use on pastures, rangelandor CRP in 
most states. Check with your state extension or Department of Agriculture before use to be 
certain CHISUM is registered in your state. Do not use CHISUM in the following counties of 
Colorado: Alamosa, Conejos, Costilla, Rio Grande, and Saquache. 
CHISUM controls weeds by preemergence and postemergence activity. For best results, apply 
CHISUM to young, actively growing weeds. Weeds hardened off by cold weather or drought 
stress may not be controlled. The use rate depends upon the weed spectrum and size of weeds 
at appiication. The degree and duration of control may depend on the following factors: 
• weed spectrum and infestation intensity 
• weed size at application 
• environmental conditions at and following treatment 
It is permissible to apply CHISUM to floodplains where surface water is not present, terrestrial 
areas of deltas, and low lying areas where water is drained but may be isolated in pockets due 
to uneven or unlevel conditions. 
Environmental Conditions and Biological Activity 
CHISUM is absorbed through the foliage and roots of broad leaf weeds, rapidly inhibiting their 
growth. Leaves of susceptible plants appear chlorotic from 1 to 3 weeks after application and 
the growing point subsequently dies. The final effects on annual weeds are evident about 4 to 6 
weeks after application. The ultimate effects on perennial weeds and woody plants occur in the 
growing seasons following application. 
4

One to two inches of rainfall or sprinkler irrigation (enough to wet the top 2-3 inches of soil 
profile) is needed to move CHISUM into the weed root zone before the next flush of weeds 
emerge. The amount of moisture required for sufficient activation increases with crop or weed 
residue and for finer textured soils. Without sufficient Tainfall or sprinkler irrigation to move 
CHISUM into the weed root zone, weeds that germinate after treatment will not be controlled. 
Application of CHISUM provides the best control in vigorously growing grasses that shade 
competitive weeds. Weed control in areas of thin grass may not be as satisfactory. However, a 
grass canopy that is too dense at application can intercept spray and reduce weed control. 
CHISUM is safe to desirable grass species under normal conditions. However, grasses that are 
stressed from adverse environmental conditions (such as extremes in 
temperatures or moisture), abnormal soil conditions, or cultural practices, may be injured by 
applications of CHISUM. In addition, different species of grass crops may be sensitive to 
treatment with CHISUM under otherwise normal conditions. Application of CHISUM to these 
species may result in injury . 
. In warm, moist conditions, the expression of herbicide symptoms is accelerated in weeds and 
brush; in cold and/or dry conditions, expression of herbicide symptoms is delayed. In addition, 
weeds and brush h'ardened-off by drought stress are less susceptible to CHISUM. Weed and 
brush control or suppression may be reduced if rainfall, sprinkler irrigation or snowfall occurs 
within 4 hours after application. 
APPLICATION INFORMATION FOR PASTURES AND RANGELAND 
USE RATES FOR PASTURES AND RANGELAND 
Application Timing-Pastures and Rangeland 
CHISUM may be used on established native grasses such as bluestems, blue grama, 
buffalograss and other pasture grasses such as bermudagrass, bluegrass, orchardgrass, 
bromegrass (except Matua bromegrass) and fescue. Specific application information on several 
of these pasture grasses follows. 
Do not use on bentgrass or susceptible grass pastures such as timothy, carpetgrass, Matua 
bromegrass or St. Augustine grass. 
Applications of CHISUM may cause severe injury to and/or loss of Pensacola bahiagrass, 
ryegrass (Italian or perennial) and Garrison's creeping foxtail pastures. 
Pasture Grass 
Bermudagrass 
Bluegrass, bromegrass 
(except Matua bromegrass 
and orchardgrass) 
Fescue 
Buffalograss Precautions: 
Minimum time from grass establishment to 
CHISUM application 
2 months 
6 months 
24 months 
Do not use CHISUM on buffalograss that has been established for less than one year or on 
stands grown for seed production. Do not apply more than 0.625 ounces per acre of CHISUM to 
buffalograss. . 
Fescue Precautions: 
Note that CHISUM may temporarily stunt fescue, cause it to turn yellow, 'or cause seed head 
suppression. To minimize these symptoms, take the following precautions: 
• do not use more than 0.5 ounces per acre of CHISUM 
5

• use a non-ionic surfactant at 1/2 to 1 pint per 100 gallon of spray solution (1/16 to 118% v/v). 
Do not use a spray adjuvant other than non-ionic surfactant. 
• make application later in the spring after the new growth is 5 to.6 inches tall, or in the fall 
• do not use surfactant when liquid nitrogen is used as a carrier 
The first cutting yields may be reduced due to seed head suppression resulting from treatment 
with CHISUM. 
Other Pasture and Rangeland Grasses: Varieties and species of forage grasses differ in their 
tolerance to herbicides. When using CHISUM on a particular grass for the first time, limit use to 
a small area. If no injury occurs throughout the season, larger acreage may be treated the 
following season. Broadleaf pasture species, such as alfalfa and clover,. are highly sensitive to 
CHISUM and will be severely stunted or injured by CHISUM. 
APPLICATION INFORMATION FOR CONSERVATION RESERVE PROGRAM (CRP) 
CHISUM is recommended for the control or suppression of broad leaf weeds in established 
stands (planted previous year, or earlier) of the following perennial native or improved grasses 
grown on land enrolled in the Conservation Reserve Program (CRP): 
Blue Grama 
Bluestems -
big 
little 
plains 
sand 
WWspar 
Buffalograss 
Green sprangletop 
Indiangrass 
Kleingrass 
Lovegrasses -
atherstone 
sand 
weeping 
wilman 
Orchardgrass 
Sideoats grama 
Switchgrass -
blackwell 
Wheatgrasses -
crested 
intermediate 
pubescent 
slender 
streambank 
tall 
thickspike. 
western 
Wildrye grass -
Russian· 
Because newly planted CRP grass stands do not sufficiently compete with weeds, and because 
weed pressure in CRP fields is often severe, performance from CHISUM may not always be 
satisfactory. An additional herbicide application or mowing may be needed. 
Application Timing and Use Rates for CRP 
CHISUM may be applied postemergence at 0.125 to 0.25 ounces per acre to labeled grasses 
listed above that were planted the previous season and are fully tillered. 
WEEDS AND BRUSH CONTROLLED OR SUPPRESSED IN 
PASTURES, RANGELAND OR CRP 
Unless otherwise directed in the Specific Weed Problem section of this label, treat when 
weeds are less than 4 inches ta/l or in diameter and are actively growing. Before using 
CHISUM, 
carefully consider your crop rotation plans and options. For rotational flexibility, do not treat all of 
your pasture, rangeland or CRP acres at the same time. 
0.125 ounce per acre 
6

Bitter sneezeweed 
Blue/purple mustard* 
Broomweed, common 
Bur buttercup (testiculate) 
Buttercup 
Canada thistle*:t: 
Carolina geranium 
Coast fiddleneck 
(tarweed) 
Common chickweed 
Common purslane 
Conical catchfly 
Corn gromwell*:t: 
Cowcockle 
Curly dock 
Cutleaf eveningprimrose*:t: 
Dandelion 
False chamomile 
Field pennycress 
(fanweed) 
Filaree 
Flixweed* 
Groundsel (common) 
Henbit 
Kochia* 
Lambsquarters 
(common, slimleaf) 
0.25 ounce per acre 
Annual marshelder 
Blackeyed-Susan 
Buckbrush:t: 
Burclover 
Common yarrow 
Dogfennel 
0.375 to 0.625 ounce per acre 
Annual sowthistle 
Aster 
Bittercress 
Chicory 
Clover 
Cocklebur 
Common mullein 
Corn cockle 
Crown vetch 
Goldenrod 
Maximillion sunflower 
Multiflora rose*:t: 
7 
Marestail (horseweed) 
. Mayweed chamomile 
Miners lettuce 
Pigweed (redroot, 
smooth, tumble) 
Plains coreopsis 
Plantain 
Prickly lettuce* 
Prostrate knotweed*:t: 
Russian thistle* 
Shepherd's purse 
Smallseed falseflax 
Smartweed (green, 
ladysthumb, pale) 
Snow speedwell 
Tansymustard* 
Treacle mustard 
(Bushy Wallflower) 
Tumble/Jim Hill mustard 
Volunteer sunflower* 
Waterpod 
Wild buckwheat*:t: 
Wild garlic* 
Wild mustard 
Wild sunflower*:t: 
Woolly croton* 
Horsemint (beebalm) 
Musk thistle* 
Purple scabious 
Scotch thistle* 
Western snowberry:t: 
Wild carrot 
Pennsylvania smartweed 
Pensacola bahiagrass* 
Redstem tilaree 
Rough fleabane 
Seaside arrowgrass 
Sericea ~spedeza* 
Silky crazyweed 
(locoweed) 
Sweet clover 
Wild lettuce 
Wood sorrel 
Yankeeweed

0.625 to 1.25 ounce per acre 
Black henbane 
Blackberry 
Broom snakeweed* 
Buck~orn plantain 
Common crupina 
Dewberry 
Dyer's woad 
Gorse 
Halogeton 
1.25 ounce per acre 
Bull thistle 
Common tansy 
Field bindweedt: 
Gumweed 
Houndstongue 
Perennial pepperweed 
Poison hemlock 
Purple loosestrife 
* See the SPECIFIC WEED PROBLEMS section. 
Honeysuckle 
Multiflora rose and other 
wild roses* 
Plumeless thistle 
Rosering gaillardia 
Spotted knapweed* 
Teasel 
Wild caraway 
Yucca*t: 
Rush skeletonweed*t: 
Salsify 
Scouring rush 
Snowberry (Common, 
Mountain) 
St. Johnswort 
Western salsify 
Whitetop (hoary cress) 
t: Weed suppression is a reduction in weed competition (reduced population and/or vigor) as 
visually compared to an untreated area. The degree of suppression varies with the rate used, 
the size of the weeds, and the environmental conditions following treatment. 
SPECIFIC WEED PROBLEMS 
Note: For best results, thorough spray coverage of all weed species listed below is very 
important. 
Blue/Purple Mustard, Flixweed, and Tansymustard: For best results, apply CHISUM in tank 
mixtures with 2,4-0 or MCPA postemergence to mustards, but before bloom. 
Broom Snakeweed: For best results, apply CHISUM at 0.625 ounces per acre in the fall. 
Applications of CHISUM in the spring will provide suppression only. 
Canada Thistle: For suppression with broadcast applications, apply either CHISUM or 
CHISUM with 2,4-0 or MCPA in the spring after the majority of thistles have emerged and are 
small (rosette stage to 6 inches elongating stems) and actively growing. The application will 
inhibit the ability of emerged thistles to compete with grass. 
For suppression with spot applications, apply as a foliar spray once plant is fully leafed. 
Corn Gromwell, Cutleaf Eveningprimrose and Prostrate Knotweed: Apply CHISUM when 
weeds are actively growing, are no larger than 2 inches tall, and when crop canopy will aI/ow 
thorough coverage. Tank mixing 2,4-0 or MCPA with CHISUM can improve results . 
. Kochia, Russian thistle, Prickly lettuce: Naturally occurring resistant biotypes of these weeds 
are known to occur. For best results, use CHISUM in a tank mix with Oicamba (such as 
"Banvel" or "Clarity") and 2,4-0. CHISUM should be applied in the spring when kochia, Russian 
8

thistle, and prickly lettuce are less than 2 inches tall or 2 inchesacross and are actively growing 
(refer to the Tank Mixtures section of this label for additional details). 
Multiflora Rose: For control with broadcast applications, apply CHISUM as a broadcast 
application when multiflora rose is less than 3 feet tall. Application should be made in the spring, 
soon after multiflora rose is fully leafed. 
Musk Thistle, Scotch Thistle: Apply CHISUM at 0.25 ounces per acre in the spring or early 
summer prior to flowering or in the fall after newly emerged plants have reached the rosette 
stage of growth. Certain biotypes of musk and scotch thistles are less sensitive to CHISUM and 
may not be controlled. Use of CHISUM at 0.25 ounces per acre may provide some additional 
control of these less sensitive biotypes, but may not achieve acceptable control. Consult with 
your local Cheminova representative, dealer or applicator for specific use rate and tank mix 
recommendations for your area. Fall applications should be made before the soil freezes. 
Pensacola bahiagrass control in established Bermudagrass pasture: Apply CHISUM at 
0.375 ounces per acre after greenup in the spring but before bahiagrass seed head 
formation. Application should be made when moisture is sufficient to enhance grass growth. 
CHISUM is very effective for removal of bahiagrass from bermLidagrass pastures. In highly 
infested pastures, the use of CHISUM can clear the areas of useful forage until 
the bermudagrass has time to cover the area. Therefore, CHISUM treatments should be spread 
out over a period of years. Do not apply to an entire farm or ranch in one year. Fertilization 
(particularly with nitrogen and potassium) and/or replanting may accelerate the process of 
reestablishment of bermudagrass. Under heavy bahiagrass pressure, grazing 
pressure, or adverse weather conditions (heat and drought), bahiagrass regrowth may occur. 
CHISUM should not be applied in liquid fertilizer solutions for Pensacola bahiagrass control, as 
poor control and/or regrowth may occur. 
CHISUM should riot be used for the control of common or Argentine bahiagrass. 
Plumeless Thistle: For control of plumeless thistle apply CHISUM at 0.625 ounces per acre in 
the spring or early summer prior to flowering or in the fall after newly emerged plants have 
reached the rosette stage of growth. Fall applications should be made before the soil freezes. 
Rush skeletonweed: For best results, apply CHISUM at 1.25 ounces per acre with 8 fluid 
ounces of dicamba (such as "8anvel" or "Clarity") and 16 fluid ounces of 2,4-0 per acre. 
Sericea lespedeza: For best results, apply CHISUM at 0.625 ounces per acre beginning at 
flower bud initiation through the full bloom stage of growth. Do not make 
applications if drought conditions exist at intended time of application. 
Spotted .Knapweed: For best results, apply CHISUM at 0.625 ounces per acre with 8 fluid 
ounces of dicamba (such as "8anvel" or "Clarity") and 16 fluid ounces of 2,4-0 per 
acre. 
Snowberry (Western, Common, Mountain): For control of snowberry, apply CHISUM at 1.25 
ounces after the plants are actively growing. Applications can be made throughout the growing 
season but before fall defoliation. Tank mixtures with 2,4-0 ester improve control (refer to Tank 
Mixtures section of this label for additional information). 
9

Sunflower (wild or volunteer): Apply CHISUM plus 2,4-0 or MCPA after the majority of 
sunflowers have emerged, are 2 inches to 4 inches tall and are actively growing. Use spray 
volumes of at least 3 gal by air or 10 gal by ground. 
Wild Buckwheat: For best results, apply CHISUM plus 2,4-0 or MCPA when plants have no 
more than 3 true leaves (not counting the cotyledons). If plants are not actively 
growing, delay treatment until environmental conditions favor active weed growth. 
Wild Garlic: For best results, apply CHISUM at 0.125 to 0.25 ounces per acre in the early 
spring when wild garlic is less than 12 inches tall with 2 inches to 4 inches of new growth. 
Woolly Croton: For best results, apply CHISUM at 0.125 to 0.25 ounces per acre in the late 
spring or early summer from cotyledon through 2 true leaf stage. 
Yucca: For best results, apply CHISUM at 0.625 to 1 ounce per acre plus 2,4-0, dicamba, 
dicamba plus 2,4-0, ot "Remedy" from two weeks before blooming to two weeks after 
blooming. 
SPRAY ADJUVANTS 
Unless otherwise recommended, applications of CHISUM must include either a crop oil 
concentrate or a nonionic surfactant. Consult Cheminova prior to using other adjuvant systems. 
If another herbicide is tank mixed with CHISUM, select adjuvants authorized for use with both 
products. Products must contain only EPA-exempt ingredients (40 CFR 180). 
Petroleum Crop Oil Concentrate (COC) or Modified Seed Oil (MSO) 
• Apply at 1 % v/v (1 gal per 100 gal spray solution) or 2% under arid conditions. 
• Oil adjuvants must contain at least 80% high quality, petroleum (mineral) or modified 
vegetable seed oil with at least 15% surfactant emulsifiers. 
Nonionic Surfactant (NIS) 
• Apply at 0.25% v/v (1 qt per 100 gal spray solution) or 0.5% under arid conditions. 
• Surfactant products must contain at least 60% non ionic surfactant with a hydrophilicllipophilic 
balance (HLB) greater than 12. -
Special Adjuvant Types 
• Combination adjuvant products may be used at doses that provide the required amount of NIS, 
COC, MSO. Consult product literature for use rates and restrictions. 
• In addition to the adjuvants specified above, other adjuvant types may be used if they provide 
the same functionality and have been evaluated and approved by Cheminova. Consult 
Cheminova before using adjuvant types not specified on this label. 
Exceptions: On Fescue pastures use no more than 1/2 to 1 pint non-ionic surfactant per 100 
gallons. 
Antifoaming agents may be used if needed. 
Ammonium Nitrogen Fertilizer 
• Use up to 2% v/v of a high-quality urea ammonium nitrate (UAN), such as 28% N or 32% N, or 
up to 17 Ib/acre of a spray grade ammonium sulfate (AMS). 
10 
-----~--

Do not use low rates of liquid fertilizer as a substitute for spray adjuvants. 
GROUND APPLICATION 
To obtain optimum spray distribution and thorough coverage, use flat-fan or low-volume flood 
nozzles. For flat-fan nozzles, use at least 10 GPA for broadcast applications to pasture, 
rangeland or CRP. 
For flood nozzles on 30 inch spacings, use at least 10 gal!ons per acre (GPA), flood nozzles no 
larger than TK10 (or equivalent), and a pressure of at least 30 pounds per square inch (psi). For 
40 inch nozzle spacings, use at least 13 GPA; for 60 inch spacings, use at least 20 GPA. It is 
essential to overlap the nozzles 100% for all spacings. 
With "Raindrop RA" nozzles, use at least 30 GPA and ensure that nozzle spray patterns overlap 
100% . 
. Use 50-mesh screens or larger. 
AERIAL APPLICATION 
Use nozzle types and arrangements that provide optimum spray distribution and maximum 
coverage. 
Use a minimum of 3 GPA. 
When applying CHISUM by air in areas adjacent to sensitive crops, use solid stream nozzles 
oriented straight back. Adjust the swath to avoid spray drift damage to sensitive crops 
downwind and/or use ground equipment to treat the border edge of fields. See the Spray Drift 
Management section of this label. 
TANK MIXTURES 
When tank mixing CHISUM, usethe most restrictive label limitations for each product used in 
the mix. 
With Insecticides and Fungicides 
CHISUM may be tank mixed or used sequentially with insecticides and fungiCides registered for 
use on pastures, rangeland or CRP. However, under certain conditions (drought stress or cold 
weather), tank mixes or sequential applications of CHISUM with organophosphate insecticides 
(such as methyl parathion) may produce temporary grass yellowing or, in severe cases, grass 
injury. The potential for grass injury is greatest when wide fluctuations in day/night temperatures 
occur just prior to or soon after application. Test these mixtures in a small area before treating 
large areas. Do not use CHISUM plus malathion, since grass injury will result. 
Herbicide Tank Mixtures for Pastures or Rangeland: 
CHISUM may be tank mixed with other suitable registered pasture and rangeland herbicides to 
control weeds listed as WEEDS SUPPRESSED, weeds resistant to CHISUM, or weeds not 
listed under WEEDS CONTROLLED. Read and follow all manufacturer's label 
recommendations for the companion herbicide. If those recommendations conflict with 
this label, do not tank mix the herbicide with CHISUM. 
11

. CHISUM can be applied in a tank mix with one of the following products. Refer to companion 
herbicide labels to confirm that the product is labeled for control of the weeds listed 
above and is registered for use in your state. 
Product 
"Grazon" P+O 
"Tordon" 22K 
"Weed master" 
"Remedy" 
Product 
2,4-0 
Oicamba (such as "Ban vel" or "Clarity") 
2,4-0 + Oicamba 
Herbicide Tank Mixtures for CRP: 
Preplant 
Rate (oz product/A) 
8 to 32 
4 to 16 
8 to 32 
8 
Rate (oz ALIA) . 
8 to 16 
2 to 16 
3+1t012+4 
CHISUM may be tank mixed with glyphosate (such as GLYFOS® X-TRA or "Roundup 
UltraMax") as a pre-plant (prior to the planting of CRP grasses) treatment to control broad leaf 
and grass weeds. When using a glyphosate tank mix, allow at least 7 days after application 
before planting grasses. Refer to glyphosate containing product labels and fact sheets for all 
use instructions, label rates, weed control claims, warnings and precautions. 
Postemergence 
For best weed control performance in CRP, use CHISUM in a tank mix with 2,4-0 (ester 
formulations perform best) or dicamba (such as "Banvel" or"Clarity"). 
CHISUM can' be tank mixed with 2,4-0 at 1/4 pound a.LlA for all labeled grasses larger than the 
5-leaf stage. For fully tillered stands, up to 1/2 pound a.LlA of 2,4-0 may be 
used. A spray adjuvant may be added. However, the addition of spray adjuvant may increase 
the chance of grass injury. 
CHISUM can also be tank mixed with dicamba (such as "Banvel" or "Clarity"). Use no more than 
1/8 to 1/4 pound a.i.!A of dicamba plus CHISUM after majority of grasses are in the 3-leaf stage. 
In established grasses (2nd year stands), use no more than 1/4 to 1/2 pound a.LlA dicamba 
plus CHISUM. A spray adjuvant may be added. However, the ~ddition of spray adjuvant may 
increase the chance of grass injury. 
With Liquid Nitrogen Solution Fertilizer 
Liquid nitrogen fertilizer solutions may be used as a carrier in place of water. Run a tank mix 
compatibility test before mixing CHISUM in fertilizer solution: 
CHISUM must first be slurried with clean water and then adde,d to liquid nitrogen solutions (e.g., 
28-0-0, 32-0-0). Ensure that the agitator is running while the CHISUM is added. 
Use of this mixture may result in temporary grass yellowing and stunting. 
If using low rates of liquid' nitrogen fertilizer (between 5 and 50% of the spray solution volume) in 
the spray solution, the addition of a non-ionic surfactant is necessary. Add surfactant at 1/4 pint 
12 
·~ ...

per 100 gallon of spray solution (0.03%). Do not use a spray adjuvant other than non-ionic 
surfactant. 
When using high rates of liquid nitrogen fertilizer (equal to or greater than 50% of the spray 
solution volume) in the spray solution, adding a spray adjuvant increases the risk of grass 
injury. Consult your agricultural dealer or consultant for a specific recommendation before 
adding an adjuvant to these tank mixtures. 
If 2,4-D or MCPA is included with CHISUM and fertilizer mixture, ester formulations tend to be 
more compatible (See manufacturer's label). Do not add a spray adjuvant when 
using CHISUM in tank mix with 2,4-0 ester and liquid nitrogen fertilizer solutions greater than 
5% of the spray solution volume. 
The use of liquid nitrogen fertilizer solutions greater than 5% of the spray solution volume with 
CHISUM at rates greater than 0.25 ounces may cause grass iiljury. 
Do not use low rates of liquid fertilizer as a substitute for a spray adjuvant. 
Do not tank mix CHISUM with liquid fertilizer solutions with a pH less than 3.0. 
MINIMUM ROTATIONAL INTERVALS 
Minimum rotation intervals are determined by the rate of breakdown of CHISUM applied. 
CHISUM breakdown in the soil is affected by soil pH, presence of soil microorganisms, soil 
temperature, and soil moisture. Low soil pH, high soil temperature, and high soil moisture 
increase CHISUM breakdown in soil, While high soil pH, low soil temperature, and low soil 
moisture slow CHISUM breakdown. Of these 3 factors, only soil pH remains relatively constant. 
Soil temperature, and to a greater extent, soil moisture, can vary significantly from year to year 
and from area to area. For this reason, soil temperatures and soil moisture should be monitored 
regularly when considering crop rotations. 
Before using CHISUM, carefully consider your crop rotation plans and options. For rotational 
flexibility, do not treat all of your pasture, rangeland or CRP acres at the same time. 
SOIL PH LIMITATIONS 
CHISUM should not be used on soils having a pH above 7.9, because soil residual activity could 
extend crop rotation intervals beyond normal. Under certain conditions, 
CHISUM could remain active in the soil for 34 months or more, injuring subsequent crops 
Checking Soil pH 
Before using CHISUM, determine the soil pH of the areas of intended use. To obtain a 
representative pH value for the test area, take several 0 inch to 4 inch samples from different 
areas 
of the field and analyze them separately. Consult local extension publications for additional 
information on recommended soil sampling procedures. 
BIOASSAY 
A field bioassay must be completed before rotating to any crop or grass species/variety not 
listed in the Rotation Intervals Table, or if the soil pH is not in the specified range, or if the use 
rate applied is not specified in the table. To conduct a field bioassay, grow test strips of the 
crop(s) or grass(es) you plan to grow in fields previously treated with CHISUM. Crop or grass 
response to the bioassay will indicate whether or not to rotate to the crop(s) or grass(es) grown 
in the test strips. If a field bioassay is planned, check with your local Agricultural dealer for 
information detailing the field bioassay procedure. 
13

CROP ROTATION 
Rotation Intervals in Pasture, Rangeland or CRP for Overseeding and Renovation 
Maximum Rotation 
CHISUM Minimum Rotation 
Crap or Grass Rate on Pasture Interval (months) 
Location Species (ounce/acre) 
AL, AR, FL, GA, KY, Alfalfa, red clover, 
LA, MS, NC, OK, SC, white clover, sweet Up to 0.25 TN, TX, VA, WV clover, bermudagrass, 4 
bluegrass, ryegrass, 
tall fescue 
Wheat (except durum) . Up to 0.375 1 
Durum, barley, oat Up to 0.375 10 
ALL STATES NOT Red clover, white 
INCLUDED ABOVE clover, and sweet Up to 0.25 12 
clover 
Bermudagrass, Up to 0.25 6 bluegrass, ryegrass 
Tall Fescue Up to 0.25 18 
Wheat (except durum) Up to 0.25 1 
Durum, barley, oat Up to 0.25 10 
ALL AREAS WITH Russian wildrye Up to 0.625 1 SOIL PH OF 7.5 OR 
LESS Green needlegrass, 
switchgrass, sheep Up to 1.25 1 
fescue 
Meadow brame, 
smooth brame, alta 
fescue, red fescue, . Up to 1.25 meadow foxtail, 2 
orchardgrass, 
Russian wildrye, 
timothy 
ALL AREAS WITH Alkali sacoton, 
SOIL PH OF 7.9 OR mountain brame, blue Up to 1.25 1 LESS grama, thickspike 
wheatgrass 
Sideoats grama, Up to 0.625 2 switchgrass 
Western wheatgrass Up to 1.25 2 
Sideoats grama, 
switchgrass, big Up to 1.25 3 
bluestem 
STS ™ soybean Up to 0.25 6 
AL, AR, FL, GA, KY, Field corn, Soybeans Up to 0.25 12 
14

LA, MS, NC, OK, SC, 
TN, TX, VA, WV 
WITH SOIL PH OF 
7.0 OR LESS 
GRAZING/HAYING 
There are no grazing or hay harvest restrictions for CHISUM when applied to range, pasture, 
CRP, and/or undesirable vegetation in uncultivated areas (fence rows, farmyards, and rights-of­
way) which are adjacent to, or pass through or transect, treated pastures, rangeland, or CRP. 
Coveralls and shoes plus socks must be wom if cutting within 4 hours of treatment. 
MIXING INSTRUCTIONS 
1. Fill the tank 1/4 to 1/3 full of water (If usihg,liquid nitrogen fertilizer solution in place of water, 
see Tank Mixtures sections for additional details). 
2. While agitating, add the required amount of CHISUM. 
3. Continue agitation until the CHISUM is fully dispersed, at least 5 minutes. 
4. Once the CHISUM is fully dispersed, maintain agitation and continue filling tank with water. 
CHISUM should be thoroughly mixed with water before adding any other material. 
5. As the tank is filling, add tank mix partners (if desired) then add the necessary volume of 
spray adjuvants. Always add spray adjuvants last. 
6. If the mixture is not continuously agitated, settling will occur. If settling occurs, thoroughly re­
agitate before using. 
7. Apply CHISUM spray mixture within 24 hours of mixing to avoid product degradation. 
8. If CHISUM and a tank mix partner are to be applied in multiple loads, pre-slurry the CHISUM 
in clean water prior to adding to the tank. This will prevent the tank mix partner from interfering 
with the dissolution of the CHISUM. 
Do not use CHISUM with spray additives that reduce the pH of the spray solution to below 3.0. 
SPRAY EQUIPMENT 
For specific application equipment, refer to the manufacturer's recommendations for additional 
information on GPA, pressure, speed, nozzle types and arrangements, nozzle heights above 
the target canopy,. etc. 
Be sure to properly calibrate air or ground equipment before application. Select a spray volume 
and delivery system that will ensure thorough coverage and a uniform spray pattem with 
minimum drift. Use higher spray volumes to obtain better coverage when the crop canopy is 
dense. Avoid swath overlapping, and shut off spray booms while starting, tuming, slowing, or 
stopping to avoid crop injury. 
Do not make applications using equipment and/or spray voh,lmes or under weather conditions 
that might cause spray to drift onto nontarget sites. For additional information on spray drift, 
refer to the Spray Drift Management section of the label. 
Continuous agitation is required to keep CHISUM in suspension. 
SPRAYER CLEANUP 
15 
.~ •.. _ ... --

Spray equipment must be clean before CHISUM is sprayed. Follow the cleanup procedures 
specified on the labels of previously applied products. If no directions are provided, follow the 
six steps outlined in After Spraying CHISUM section of this label. 
At the End of the Day 
When multiple loads 'of CHISUM herbicide are applied, it is recommended that at the end of 
each day of spraying, the interior of the tank be rinsed with fresh water and then partially filled, 
and the boom and hoses flushed. This will prevent the buildup of dried pesticide deposits that 
can accumulate in the application equipment. 
After Spraying CHISUM and Before Spraying Crops Other Than Pasture, Rangeland or 
CRP . 
To avoid subsequent injury to desirable crops, thoroughly clean all mixing and spray equipment 
immediately following applications of CHISUM as follows: 
1. Drain tank; thoroughly rinse spray tanks, boom, and hoses with clean water. Loosen and 
physically remove any visible deposits. 
2. Fill the tank with clean water and 1 gal of household ammonia* (contains 3% active) for every 
100 gal of water. Flush the hoses, boom, and nozzles with the cleaning solution. Then add 
more water to completely fill the tank. Circulate the cleaning solution through the tank and 
hoses for at least 15 min. Flush the hoses, boom, and nozzles again with the cleaning 
solution, and then drain the tank. 
3. Remove the nozzles and screens and clean separately in a bucket containing cleaning agent 
and water. 
4. Repeat step 2. 
5. Rinsethe tank, boom, and hoses with clean water. 
6. If only Ammonia is used as a cleaner, the rinsate solution may be applied back to the crop(s) 
recommended on this label. Do not exceed the maximum-labeled use rate. If other cleaners 
are used, consult the cleaner label for rinsate disposal instructions. 
If no instructions are given, dispose of the rinsate on site or at an approved waste disposal 
facility. 
* Equivalent amounts of an alternate-strength ammonia solution or a Cheminova-approved 
cleaner can be used in the cleanout procedure. Carefully read and follow the individual cleaner 
instructions. Consult your agricultural dealer, applicator, or Cheminova representative for a 
listing of approved cleaners. ' 
Notes: 
1. Attention: Do not use chlorine bleach with ammonia, as dangerous gases will form. Do not 
clean equipment in an enclosed area. 
2. Steam-cleaning aerial spray tanks is recommended prior to performing the above cleanout 
procedure to facilitate the removal of any caked deposits. 
3. When CHISUM is tank mixed with other pesticides, all required cleanout procedures should 
be examined and the most rigorous procedure should be followed. 
4. In addition to this cleanout procedure, all precleanout guidelines on subsequently applied 
products should be followed as per the individual labels .• 
5. Where routine spraying practices include shared equipment frequently being switched 
between applications of CHISUM and applications of other pesticides to CHISUM sensitive 
crops during the same spray season, it is recommended that a sprayer be dedicated to 
CHISUM to further reduce the chance of crop injury. 
SPRAY DRIFT MANAGEMENT 
16

The interaction of many equipment and weather-related factors determines the potential for 
spray drift. The applicator is responsible for considering all these factors when making 
application decisions. 
AVOIDING SPRAY DRIFT IS THE RESPONSIBILITY OF THE APPLICATOR. 
IMPORTANCE OF DROPLET SIZE 
The most effective way to reduce drift potential is to apply large droplets (>150 - 200 microns). 
The best drift management strategy is to apply the largest droplets that provide sufficient 
coverage and control. The presence of sensitive species nearby, the environmental conditions, 
and pest pressure may affect how an applicator balances drift control and coverage. APPLYING 
LARGER DROPLETS REDUCES DRIFT POTENTIAL, BUT WILL NOT PREVENT DRIFT IF 
APPLICATIONS ARE MADE IMPROPERLY OR UNDER UNFAVORABLE ENVIRONMENTAL 
CONDITIONS! See Wind, Temperature and Humidity, and Temperature Inversions sections 
of this label. 
Controlling Droplet Size - General Techniques 
• Volume - Use high flow rate nozzles to apply the highest practical spray volume. Nozzles with 
higher rated flows produce larger droplets. 
• Pressure - Use the lower spray pressures recommended for the nozzle. Higher pressure 
reduces droplet size and does not improve canopy penetration. WHEN HIGHER FLOW 
RATES ARE NEEDED, USE A HIGHER-CAPACITY NOZZLE INSTEAD OF INCREASING 
PRESSURE. 
• Nozzle Type - Use a nozzle type that is designed for the intended application. With most 
nozzle types, narrower spray angles produce larger droplets. Consider using low-drift nozzles. 
Controlling Droplet Size - Aircraft 
• Number of Nozzles - Use the minimum number of nozzles with the highest flow rate that 
provide uniform coverage. 
• Nozzle Orientation - Orienting nozzles so that the spray is emitted backwards, parallel to the 
airstream will produce larger droplets than other orientations: 
• Nozzle Type - Solid stream nozzles (such as disc and core with swirl plate removed) oriented 
. straight back produce larger droplets than other nozzle types. 
• Boom Length - The boom length should not exceed 3/4 of the wing or rotor length - longer 
booms increase drift potential. . 
• Application Height - Application more than 10ft above the canopy increases the potential for 
spray drift. 
BOOM HEIGHT 
Setting the boom at the lowest labeled height (if specified) which provides uniform coverage 
reduces the exposure of droplets to evaporation and wind. For ground equipment, the boom 
should remain level with the crop and have minimal bounce. 
WIND 
Drift potential increases at wind speeds of less than 3 mph (due to inversion potential) or more 
than 10 mph. "However, many factors, including droplet size and equipment type determine drift 
potential at any given wind speed. AVOID GUSTY OR WINDLESS CONDITIONS. 
Note: Local terrain can influence wind patterns. Every applicator should be familiar with local 
wind patterns and how they affect spray drift. 
17

TEMPERATURE AND HUMIDITY 
When making applications in hot and dry conditions,set up equipment to produce larger 
droplets to reduce effects of evaporation. 
TEMPERATURE INVERSIONS 
Drift potential is high during a temperature inversion. Temperature inversions restrict vertical air 
mixing, which causes small suspended droplets to remain .close to the ground and move 
laterally in a concentrated cloud. Temperature inversions are characterized by increasing 
temperature with altitude and are common on nights with limited cloud cover and light to no 
wind. They begin to form as the sun sets and often continue into the morning. Their presence 
can be indicated by ground fog; however, if fog is not present, inversions can also be identified 
by the movement of smoke from a ground source or an aircraft smoke generator. Smoke that 
layers and moves laterally in a concentrated cloud (under low wind conditions) indicates an 
inversion, while smoke that moves upward and rapidly dissipates indicates good vertical air 
mixing. 
SHIELDED SPRAYERS 
Shielding the boom or individual nozzles can reduce the effects of wind. However, it is the 
responsibility of the applicator to verify that the shields are preventing drift and not interfering 
with uniform deposition of the product. 
WEED RESISTANCE 
When herbicides that affect the same biological site of action are used repeatedly over several 
years to control the same weed species in the same field, naturally-occurring resistant 
biotypes may survive a correctly applied herbicide treatment, propagate, and become dominant 
in that field. Adequate control of these resistant weed biotypes cannot be expected. If 
weed control is unsatisfactory, it may be necessary to retreat the problem area using a product 
affecting a different site of action. 
To better manage herbicide resistance through delaying the proliferation and possible 
dominance of herbicide resistant weed biotypes, it may be necessary to change cultural 
practices within and between crop seasons such as using a combination of tillage, retreatment, 
tank~mix partners. and/or sequential herbicide applications that have a different site of 
action. Weed escapes that are allowed to go to seed will promote the spread of resistant 
biotypes. 
It is advisable to keep accurate records of pesticides applied to individual fields to help obtain 
information on the spread and dispersal of resistant biotypes. Consult your agricultural 
dealer, consultant, applicator, and/or appropriate state agricultural extension service 
representative for specific alternative cultural practices or herbicide recommendations 
available in your area. 
INTEGRATED PEST MANAGEMENT 
This product may be used as part of an Integrated Pest Management (IPM) program that can 
include biological, cultural, and genetic practices aimed at preventing economic pest damage. 
IPM principles and practices include field scouting or other detection methods, correct target 
pest identification, population monitoring, and treating when target pest populations reach 
locally determined action thresholds. 
Consult your state cooperative extension service, professional consultants or other qualified 
authorities to determine appropriate action treatment threshold levels for treating specific' 
pest/crop systems in your area. 
PRECAUTIONS 
18 
~ - .. d3---

• CHISUM may cause injury to desirable trees and plants when contacting their roots, stems or 
foliage. These plants are most sensitive to CHISUM during their development or growing stage. 
FOLLOW THE PRECAUTIONS IN THIS LABEL 
WHEN USING CHISUM. 
• Injury to or loss of desirable trees or vegetation may result from failure to observe the 
following: 
- Do not apply CHISUM, or drain or flush equipment on or near desirable trees or other plants, 
or on areas where their roots may extend, or in locations where the chemical may be washed or 
moved into contact with their roots. 
- Do not use on lawns, walks, driveways, tennis courts, golf courses, athletic fields, ·commercial 
sod operations, or other high-maintenance, fine turfgrass areas, or similar areas. 
- Do not use on grasses grown for seed. 
• Do not contaminate irrigation ditches or water used for domestic purposes. 
• Do not apply to irrigated land where the tailwater will be used to irrigate crops. 
• Do not apply to frozen ground as surface runoff may occur. 
• Do not apply to snow-covered ground. 
• Grass species or varieties may differ in their response to various herbicides. Cheminova 
recommends that you first consult your state experiment station, university, or extension agent 
as to sensitivity to any herbicide. If no information is available, limit the initial use of CHISUM to 
a small area. Components in a grass seed mixture will vary in tolerance to 
CHISUM so the final stand may not reflect the seed ratio. 
• Under certain conditions such as heavy rainfall, high pH, prolonged cold weather, or wide 
fluctuations in day/night temperatures prior to or soon after CHISUM application, temporary 
discoloration and/or grass injury may occur. CHISUM should not be applied to grass that is 
stressed by severe weather conditions, drought, low fertility, water-saturated soil, disease, or 
insect damage, as grass injury may result. Severe winter stress, drought, disease, or insect 
damage before or following application also may result in grass injury. 
• Applications of CHISUM to pastures, rangeland or CRP undersown with legume crops may 
cause severe injury to the legumes. Legumes in a seeding mixture may be severely injured or 
killed following an application of CHISUM. 
• Treatment of. powdery, dry soil or light, sandy soil when there is little likelihood of rainfall soon 
after treatment may result in off target movement and possible damage to susceptible crops 
when soil particles are moved by wind or water. Injury to crops may result if treated soil is 
washed, blown, or moved onto land used to produce crops. Injury may be more severe when 
the crops are irrigated. Do not apply CHISUM when these conditions are identified and 
powdery, dry soil or light or sandy soil are known to be prevalent in the area to be treated. 
• Applications made where runoff water flows onto agricultural land may injure crops. 
Applications made during periods of intense rainfall, to soils saturated with water, or soils 
through which rainfall will not readily penetrate may result in runoff and movement of CHISUM. 
Treated soil should be left undisturbed to reduce the potentialfor CHISUM movement by soil 
erosion due to wind or water. . 
• For ground applications applied to weeds when dry, dusty field conditions exist, control of 
weeds in wheel track areas may be reduced. 
• Do not apply more than the equivalent of 1 ounce of chlorsulfuron per acre per year. 
• Do not apply more than the equivalent of 1 ounce of metsulfuron methyl per acre per year. 
• Avoid disturbing (e.g. cultivating or mowing) treated areas for at least 7 days following 
application. 
WARRANTY DISCLAIMER 
Cheminova warrants that this product conforms to the chemical description on the label and is 
reasonably fit for the purposes stated on the label when used in strict accordance with the 
directions, subject to the inherent risks set forth below. TO THE EXTENT CONSISTENT WITH 
19

APPLICABLE LAW, CHEMINOVA MAKES NO OTHER EXPRESS OR IMPLIED WARRANTY 
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY OTHER 
EXPRESS OR IMPLIED WARRANTY. 
INHERENT RISKS OF USE 
It is impossible to eliminate all risks associated with use of this product. Crop injury, lack of 
performance, or other unintended consequences may result because of such factors as use of 
the product contrary to label instructions (including conditions noted on the label, such as 
unfavorable temperatures, soil conditions, etc.), abnormal conditions (such as excessive rainfall, 
drought, tornadoes, hurricanes), presence of other materials, the manner of application, or other 
factors, all of which are beyond the control of Cheminova or the Seller. All such risks shall be 
assumed by Buyer and User. Buyer and User agree to hold Cheminova and the Seller 
. harmless for any claims related to such factors. 
LIMITATION OF REMEDIES 
To the extent consistent with applicable law, the exclusive remedy for losses or damages 
resulting from this product (including claims based on contract, negligence, strict liability, or 
other legal theories), shall be limited to one of the following, at Cheminova's election: 
(1) Refund of purchase price paid by buyer or user for product bought, or 
(2) Replacement of amount of product used. 
In no case shall Cheminova be liable for consequential. incidental, or special damages or 
losses. 
The terms of the Warranty Disclaimer above and this Limitation of Remedies cannot be varied 
by any written or verbal statements or agreements. No employee or sales agent of Cheminova 
or the Seller is authorized to vary or exceed the terms of the Warranty Disclaimer or this 
Limitation of Remedies in any manner. 
For product information call: 1-800-548-6113 
Internet address: www.cheminova.us.com. 
All rights reserved. 
CHISUM and GLYFOS are trademarks or registered trademarks of Cheminova 
Cimarron, STS and Telar are trademarks or registered trademarks of E.!. duPont de Nemours 
and Company 
Raindrop RA is a registered trademark of GP Companies, Inc. 
Weed master. and Clarity are registered trademarks of BASF Corp 
Banvel isa trademark of BASF Corp 
Grazon, Remedy, Tordonare registered trademarks of Dow AgroSciences LLC 
Roundup Ultramax is a registered trademark of Monsanto Technology LLC 
6-9c08 
0/B19/8 
20