crop-chem-docs/corpus/epa_ppls/100-716.md

# CYCLE HERBICIDE

- EPA Reg No: **100-716**
- Registrant: SYNGENTA CROP PROTECTION, LLC
- Signal word: Caution
- Active ingredients: Cyanazine (22%); Metolachlor (22%)
- Label accepted: 1994-01-13
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000100-00716-19940113.pdf

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/'Is. Karen S. St wopf 
Ciba Plant Protection 
CIBA-GEIGY Corporation 
P.O. Box 18300 
JAN 1 j 1994 
Greensboro, North Carolina 27419-8300 
Dear MS. Stumpf: 
Subject: cycle- Herbicide 
EPA Registration Number 100-716 
Application Dated December ~O, 1993, Requesting 
Amendments TO Labeling oS Listed on Application 
The subject request for the following labeling ~mendments: 
add voluntary ris~ reduction measures for cyanazine per EPA letter 
of December 9, 1993, aad cocklebur and velvetleaf for partial 
control and other minor administrative allienaments: have been 
reviewed and found acceptable for registration under the 
Federal Insecticide, ~ungicide and ROdenticide Act as amended 
provided that you: 
1. Add a statement of pounds per gallon for cyanazine 
to the front panel, following the ingredient statements, 
as required (156.1U (9)(4), Ccae of Federal Regulations). 
We note that you have added this information in the 
text of the lacel. 
2. submit five (5) printed copies of the final prir.ted 
label before releasing the proQuct for Shipment, 
under the lacel. 
It these conditions are not complied with, the registration 
will be subject to cancellation in accordance with FlfRA, 
Section 6(a). Your release for shipment of the prouuct 
co~stitutes acceptance of these conditions. 
A stamped copy of the labeling is enclosed for your records. 
LnclosurE 
Sincerely yours, 
Joanne I. Miller 
Proouct Manager (23) 
Fun~icide-rierDicide Branch 
k~~istration Division (750~C) 
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8EST AVAILAILE 00"

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Cycle® 
DRAFT 
BOOKLET 
Restricted Use Pesticide 
For retail sale to and use only by Certified 
Applicators or persons under their direct 
supervision and only for those uses covered by 
the Certified Applicator's Certification. See 
Precautionary Statements for reasons this product 
is classified Restricted Use 
(Front Cover of Removable Booklet) 
Herbicide 
For weed control in corn and grain sorghum 
Act,ive Ingredient: 
Metolachlor: 2-chloro-N-(2-ethyl-
6-methylphenyl)-N-(2-methoxy-l-
methY,lethy 1) acetamide .............................. . 
Cyanazine: 2[[4-chloro-6-(ethylamino)-s-triazin-2-yl] 
amino-]-2-methylpropionitrile ........................ . 
Inert Ingredients: 
22.0% 
22.0% 
56.0% 
Total: 100.0% 
2 1/2 Gallons 
U.S. Standard Measure 
KEEP OUT OF REACH OF CHILDREN. 
1·AUTION 
See aodition~l precautionary 
statements and directions for use 
inside booklet. 
EPA Reg. No. 100-716 
EPA Est. 100-LA-1 
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In EPA Len .. DIlled 
"liN 1 3 1994 
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Cyc1e® trademark of~iba-Gei9Y Corporation 
•• ....f"Dded~ for abe fJ'"IJeld~ 
~""red under EPA Rqr, No, 
C1993 eiba-Geigy Corporation 
Ciba Plant Protection 
Ciba-Geigy'Corporation 
Greensboro, North Carolina 27419 
Ciba-Geigy BEST AVAILAILE COpt 
CGA 
[GANNONC.LABELC]CYCLEF6 - 12/17/93 
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DIRECTIONS FOR USE AND CONDITIONS OF SALE AND WARRANTY 
IMPORTANT: Read the entire Directions for Use and the 
Conditions of Sale and Warranty before usin~ this product. 
If terms are not acceptable, return the unopened product 
container at once. 
Conditions of Sale and Warranty 
The Directions for Use of this product reflect the opinion 
of experts based on field use and tests. The directions 
are believed to be reliable and should be followed care­
fully. Sowever, it is impossible to eliminate all risks 
inherently associated with use of this product. Crop 
injury, ineffectiveness, or other unintended consequences 
may result because of such factors as weather conditions, 
presence of other materials, or the manner of use or appli­
cation all of which are beyond the control of;Ciba-Geigy or 
tHe Seller. ~ll such risks shall be assumed by the Buyer. 
Ciba-Geigy warrants that this product conforms to the 
~hemical description on the label and is reasonably fit for 
the purposes referred to in the Directions for Use subject 
to the inherent risks referred to above. Ciba-Geigy makes 
no other express or implied warranty of Fitness or Mer­
chantability or any other express or implied warranty. In 
no case shall Ciba-Geigy or the Seller be liable for conse­
quential. special. or indirect damages resultin~ from the 
use or handling of this product. Ciba-Geigy and the Seller 
offer this product, and the Buyer a~d user accept it, sub­
ject to the foregoing Conditions of Sale and Warranty, 
which may be varied only by agreement in writing signed by 
a duly authorized reprasentative of Ciba-Geigy. ' 
8ESTAV~LA.LEOOPI 
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DIRECTIONS FOR USE 
It is a violation of federal law to use this product in a 
manner inconsistent with its labeling. 
FAILURE TO FOLLOW THE DIRECTIONS FOR USE AND PRECAUTIONS ON 
THIS LABEL MAY RESULT IN POOR WEED CONTROL. CROP INJURY. OR 
ILLEGAL RESIDUES. 
Do not apply this product in such a manner as to directly 
or through drift expose workers or other persons except 
those knowingly involved in the application. The area 
being treated must be vacated by unprotected persons. 
Reentry Statement 
Do not enter treated areas without protective clothing 
until sprays have dried. 
Because certa~n states may require more ~estrictive reentry 
intervals ·for various crops treated with this product, con­
sult your State Department of Agriculture for further 
information. 
Written or oral warnings must be given to workers who are 
expected to be in a treated area or in an area about to be 
treated with this product. Oral warnings must inform work­
ers of areas or fields that may not be entered without spe­
cific protective clothing until sprays have dried, and 
appropriate actions to take in case of accidental exposure, 
as described under Precautionary Statements on this label. 
vlhen oral warnings are given, warnings shall be given in a 
language customarily understood by wor:kers. Oral wornings 
must be given if there is reason to believe that written 
warnings cannot be understood by workers. Written warnings 
must include the following information: "CAUTION. Area 
treated with Cycle on (date of application). Do not enter 
without appropriate protective clothing until sprays have 
dried. In case of accidental expos~re, flush eyes or skin 
with plenty of water. Call a physician if irritation per­
sists. Remove and wash contaminated clothing before 
reuse." 
To avoid spray drift, do not apply under windy conditions. 
Avoid spray overlap, because crop injury may result. 
Protective Clqthing RE1uirements 
Use of protective clothing and equipment and following the 
precautions below can reduce risk associated with mixing, 
loading and applying this product. 
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When mixing and loading this product, wear a face shield. 
When applying the product, wear long trousers and 
long-sleeved clothing. Wear chemical resistant gloves 
extending above the wrist, a chemical resistant apron, long 
trousers and long-sleeved clothing when mixing or loading 
or when adjusting, repairing, or cleaning equipment. 
Protective gloves must be washed with soap and water after 
use and before removing from the hands. Remove contami­
nated clothing and wash before reuse. Contaminated cloth­
ing should be laundered separately from household laundry 
to prevent cross-contamination of other laundry. Heavily 
contaminated or drenched clothing and prctective clothing 
must be discarded or destroyed in accordance with state and 
local regulations. 
1. Best Management Practices for the Protection of Ground and 
Surface Water 
This pr01uct may not be mixed or loaded within 50 feet of 
perennial or intermittent streams and rivers, natural or 
impounded .lakes, .and reservoirs. This product may not be 
~ mixed, loaded or used within 50 feet of all wells, inc lud­
~ ·ing abandoned wells, drainage wells, and sinkholes. This 
A product may not be applied aerially or by ground within 
I ·66 feet of the points where field surface water run-off 
enters pe:rennia::' or intermittent streams and rivers or 
within 200 ft. of natural or impounded lakes and reser­
voirs. This product may only be applied to highly erodible 
land if the 66 foot buffer or setback from run0ff point5 is 
planted to crop or seeded with grass. 
Operations that involve mixing, loading, rinsing, or wash­
ing of this product into or from pesticide handling or 
application equipment or containers within 50 fe~t of any 
well are prohibited unless conducted on an imperevious pad 
constructed to withstand the weight of the heaviest load 
that may be positioned en or moved across the pad. Such a 
pad shall be designed ~nd maintained to contain any product 
spills or equipment leaks, container or equipment rinse or 
wash-water, and rainwater that may fallon the pad. 
Surface water shall not be allowed to either flow over or 
from the pad, which means the pad must be self-contained. 
The pad shall be sloped to facilitate material removal. An 
unroofed pad shall be of sufficient capacity to contain, at 
a minimum, 110% of the capacity of the largest pesticide 
container or application equipment on the pad. A pad that 
is covered by a roof of sufficient size to completely 
exclude precipitation from contact with the pad shall have 
a minimum containment capacity of 100% of the capacity of 
the largest pesticide container or application equipment on 
the pad. Containment capacities as described above shall 
be maintained at all times. The above-specified minimum 
containment capacities do not apply to vehicles when deliv-
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ering pesticide shipments to the mixing/loading site. 
States may have in effect additional requirements regarding 
well-head setbacks and operational area containment. 
Where there are state/local requirements regarding 
cyanazine use (including lower maximum rates and/or higher 
setbacks) which are different from the label, the more 
restrictive/protective requirements apply. 
Cyanazine Rate Limits 
Cycle Herbicide contains 2 Ibs. of cyanazine active 
ingredient per gallon. 
a. Do not apply more than 6.5 Ibs. total cyanazine a.i. 
(all sources) per acre per year to ,any land. 
b. On highly eLodible land, as defined by the Soil 
Conservation Service, if plant residue cover is less 
than 30%, do not apply more than 3.0 Ibs. total 
cyana"ine·a.i. (all sources) per acre per year. 
'. A. : .General Information 
Cycle is a selective herbicide which will control most 
annual grasses and certain broadleaf weeds in corn and 
grain sorghum. Cycle can be mixed with water or fertilizer 
and applied as an early preplant, preplant surface-applied, 
preplant incorporated, or preemergence treatment. 
Where directions specify a Cycle tank mixture with an 
AAtrex® or Princep@ formulation, other brands of atrazine 
or simazine may be used. Cycle may also be tank mixed with 
Bicep®. Follow the practices, recommendations, and limita­
tions on the respective product labels. Follow the rates, 
recommendations, and limitations on the AAtrex or respec­
tive atrazine product label, if other brands of atrazine 
are used. For reduced tillage or no-till practices, 
Gramoxone® Extra or Roundup® may be mixed with Cycle and 
Cycle Lank mixtures. For some specific no-till practices, 
2,4-0 and/or Banvel® may be added. Where tank mixtures are 
planned with 2,4-D and/or Banvel, check thoroughly for 
compatibility before mixing in the spray tank. 
~: The a~ine form of 2,4-0 tends to be more compatible 
in the tank mix. 
Observe all precautions ~nd limitations on the labels of 
each product used in tank mixtures. Tank mixtures are 
permitted only in tho~e states where the tank mix partner 
is registered. 
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Note: Certain states may have established rate limitations 
for atrazine within specific geographical areas. Consult 
your state lead pesticide control agency for additional 
information. It is a violation of this label to deviate 
from state use regulations. 
If Cycle is incorporated, any supplemental tillage before 
planting must not exceed the depth of incorporation. 
Dry weather following a preemergence application of Cycle 
alone or a tank mixture may reduce effectiveness. Culti­
vate if weeds appear. 
When reference is made to weeds partially controlled, par­
tial control can either mean erratic control from good to 
poor, or consistent control at a level below that generally 
considered acceptable for commercial weed control. 
Following many years of continuous use of cyanazine (one of 
the ingredients in Cycle), and products chemically related 
to cyanazine, tiotypes of some of the weeds listed'on this 
iabel which are controlled by the cyanazine component have 
been reported to develop resistance to this and chemically 
related herbicides. Where this is known or suspected and 
" weeds controlled by this product are expected to be present 
along with resistant biotypes, we recommend the use of 
Cycle in combination or in sequence with registered herbi­
cides which do not contain triazines. Consult with your 
state Agricultural Extension Service for specific recommen­
dations. 
Precaution: 1) Injury may occur following the use of Cycle 
under abnormally high soil moisture conditions during early 
development of the crop. 2) Do not apply Cycle postemer­
gence over-the-top of corn or grain sorghum. since injury 
may occur. 
Soil Textures and Herbicide Rates 
Where rates are based ~n coarse-, medium-, or fine-textured 
soils, it is understood that soi~ textural classes are 
generally categoLized as follows: 
Sand 
Loamy sand 
Sandy loam 
Medium 
Loam 
Silt 
silt loam 
Fine 
Silty clay loam 
Sandy clay loam 
Silty clay 
Sandy clay 
Clay loam 
Clay 
Within rate ranges in the rate tables and elsewhere on this

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label, use the lower rate on soils relatively 
coarse-textured or low in organic matter; use the higher 
rate on soils relatively fine-textured or high in organic 
matter. 
Note: Cycle, alone or in tank mixture, may be applied 
preemergence following preplant surface or preplant incor­
porated application of other herbicides. When applying 
Cycle following a preplant treatment that contains meto­
lachlor or cyanazine, do not exceed the maximum labeled 
rate for these herbicides on corn or grain sorghum. 
Thoroughly clean sprayer or other application device before 
using. Dispose of cleaning solution in a responsible man­
ner. Do not use a sprayer or applicator contaminated with 
other materials, or crop damage or clogging of the applica­
tion device may occur. 
Mixing Instructions 
Cycle AIQlle: Mix Cycle with water or fluid fertilizer. 
Fill the spray tank one-half to three-fourths full with 
water or fluid fertilizer, add the proper amount of Cycle, 
'. and then add the rest of the water or fluid fertilizer. 
1 Provide sufficient agitation during mixing and application 
to maintain a uniform suspension. 
Tank Mixtures: Fill the spray tank one-fourth full with 
water, and start agitation. Note: When one or more tank 
mix partners are used with Cycle, allow each to fully dis­
perse before adding the next product. Then, add Cycle. If 
Gramoxone Extra or Roundup is being used with Cycle or 
Cycle tank mixtures, add it after Cycle and then add the 
remainder of the water. 
For tank mixtures with AAtrex, Bicep or Princep, fluid fer­
tilizers may replace all or part of the water as the car­
rier. For tank mixtures with other herbicides, see addi­
tional mixing instructions on their respective labels. For 
each mixture check compatibility with fluid fertilizer, as 
described below, before mixinr in spray tank. For all tank 
mixtures, agitate during mixin and application to maintain 
a uniform suspension. 
Note: Do not mix Gramoxone Extra with suspension-type 
fluid fertilizers containing clay as the spray carrier. 
Compatibility Test: Since liquid fertilizers can vary, 
even within the same analysis, always check compatibility 
with herbicide(s) each time before use. Be especially 
careful when using complete suspension or fluid fertilizers 
since serious compatibility problems are more likely to 
occur. Commercial compatibility agents may improve

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compatibility in some instances. The following test 
assumes a spray volume of 25 gals. per acre. For other 
spray volumes, make appropriate changes in the ingredients. 
Check compatibility using this procedure: 
1. Add 1 pint of fertilizer to each of 2 one-quart jars with 
tight lids. 
2. To 2ne of the jars add 1/4 tsp. or 1.2 milliliters of a 
compatibility agent approved for this use, such as Compex® 
or Unite® (1/4 tsp. is equivalent to 2 pts. per 100 gals. 
spray). Shake or stir gently to mix. 
3 . 
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4 . 
To QQth jars add the appropriate amount of herbicide(s) . 
If more than one herbicide is used, add them separately 
with dry herbicides first, flowables next, and emulsifiable 
concentrates last. After each addition, shake or stir gen­
tly to thoroughly mix. The appropriate amount of herbi­
cides for this test follows: 
Dry herbicides: 
Liquid herbicides: 
For each pound to be applied per 
acre, add 1.5 level teaspoons to 
each jar. 
For each pint to be applied per 
acre, add 0.5 teaspoon or 2.5 mil­
liliters to each jar. 
After adding all ingredients, put lids on and tighten, and 
invert each jar ten times to mix. Let the mixtures stand 
15 minutes and then look for separation, large flakes, 
precipitates, gels, heavy oily film on the jar, or other 
signs of incompatibility. Determine if the compatibility 
agent is needed in the spray mixture by comparing the two 
jars. If either mixture separates, but can be remixed 
readily, the mixture can be sprayed as long as good agita­
tion is used. If the mixtures are incompatible, test the 
following methods of improving compatibility: (A) slurry 
the dry herbicide(s) in water before addition, or (B) add 
1/2 of the compatibility agent to the fertilizer and the 
other 1/2 to the emulsifiable concentrate or flowable her­
bicide before addition to the mixture. If incompatibility 
is still observed, do not use the mixture. 
5. After compatibility testing is complete, dispose of any 
pesticide wastes in accordance with the directions in the 
Storage and Disposal section at the end of this label. 
3. Application Procedures 
Application Timing 
Cycle alone or in tank mixtures with other labeled herbi-
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~ides may be applied for weed control in corn and grain 
sorghum. Refer to the appropriate crop section of the 
label of the tank mix partner to determine if application 
timings listed below are recommended. 
(1) 
(2) 
(3 ) 
Early Prep1ant and Preplant Surface Applied: For 
reduced-tillage or no-tillage systems only, Cycle 
alone or Cycle plus AAtrex, Bicep or Princep, may be 
applied before planting as specified in the corn or 
grain sorghum section of the label. Use only split 
applications for early preplant treatments made 30-45 
days before planting with 2/3 the recommended broad­
cast rate for the crop and soil textur~ applied 
initially and the remaining 1/3 at planting. Treat­
ments fewer than 30 days before planting may be made 
either as a split or a single application. If 
actively growing annual weeds less than 2 inches in 
height are present at time of treatment, apply Cycle 
alone or with AAtrex or Bicep as indicated in the 
Cycle Combinations section of the label. If weeds are 
present and exceed 2 inches in height at time of 
treatment, apply in a tank mixture with a contact 
herbicide (for example, Gramoxone Extra or Roundup) 
either alone or with AAtrex, Bicep or Princep as 
indicated in the Cycle Combinations section of this 
label. If perennial broadleaf weeds are present at the 
time of treatment, the addition of 2,4-D or Banve1 may 
improve performance. For best results, the spray 
gallonage and application procedure must be such that 
complete coverage of the foliage is obtained. 
Observe directions for use, precautions, and restric­
tions on the labels of the herbicides used. To the 
extent possible, do not move treated soil out of the 
row or move untreated soil to the surface during 
planting, or weed control will be diminished. 
Preplant Incorporated: Apply Cycle or Cycle plus 
AAtrex, Bicep or Princep to the soil and incorporate 
into the top 2 inches of soil within 14 days before 
planting. Use a finishing disk, harrow, rolling 
cultivator, or similar implement capable of providing 
uniform 2 inch incorporation. Use a preplant incorpo­
rated application if furrow irrigation is used or if a 
period of dry weather after application is expected. 
If the crop will be planted on beds, apply and incor­
porate Cycle or Cycle tank mixtures after bed forma­
tion unless specified otherwise. 
Preemergence: Apply Cycle or Cycle plus AAtrex, Bicep 
and princep, during planting (behind the planter) or 
after planting, but before weeds or crops emerge. 
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Ground Application: Apply Cycle alone or in tank mixtures 
by ground equipment in a minimum of 10 gals. of spray mix­
ture per acre unless otherwise specified. 
Use sprayers that provide accurate and uniform application. 
For Cycle tank mixtures with wettable powder or dry flow­
able formulations, screens and strainers should be no finer 
than 50-mesh. Rinse sprayer thoroughly with clean water 
immediately after use. 
Calculate the amount of herbicide needed for band treatment 
by the formula: 
band width in inch~ broadcast rate amount needed 
= per acre of 
field 
row width in inches X per acre 
Avoid application to humans or animals. Loaders should 
avoid inhalation of spray mist and prolonged contact with 
skin and should wash thoroughly before eating and at the 
end of each day's operation. 
Notes: (1) Do not 
irrigation system. 
apply this product through any type of 
(2) Do not apply by aerial equipment. 
4. Dry Bulk Granular Fertilizers 
Many dry bulk granular fertilizers may be impregnated or 
coated with Cycle al0n~ or with selected Cycle tank mix­
tures which are (1) registered for preplant incorporated or 
preplant-surface application; (2) which are used to control 
weeds in corn; and (3) are not prohibited from use on dry 
bulk granular fertilizers. 
When applying Cycle or Cycle mixtures with dry bulk granu­
lar fertilizers, follow all directions for use and precau­
tions on the respective product labels including rates per 
acre, soil texture, application methods (including timing 
of application), and rotational crops. 
All individual state regulations relating to dry bulk 
granular fertilizer blending, registration, labeling, and 
application are the responsibility of the individual and/or 
company selling the herbicide/fertilizer mixture. 
Prepare the herbicide/fertilizer mixtures by using any 
closed drum, belt, ribbon, or other commonly used dry bulk 
fertilizer blender. Nozzles used to spray Cycle onto the 
fertilizer must be placed to provide uniform spray cover­
age. Care should be taken to aim the spray onto the fer­
tilizer only, and to avoid spraying the walls of the 
blender. 
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If the herbicide/fertilizer mix is too wet, add a highly 
absorptive material such as Agsorb®, or similar granular 
clay materials, to obtain a dry free-flowing mixture. 
Absorptive materials should be added only after the herbi­
cide has been thoroughly blended into the fertilizer mix­
ture. Actively blend the herbicide/fertilizer mixture for 
five minutes before adding absorptive materials. Best 
application results will be obtained by using a granule of 
6/30 particle size or of a size similar to that of the 
fertilizer material being used. Generally, less than 2% by 
weight of absorptive material will be needed. Avoid using 
more than 5% absorptive material by weight. When the 
impregnation process is being conducted with on-board 
impregnation devices on pneumatic applicators, use of 
absorptive materials (drying agents) is not recommended. 
Calculate amounts of Cycle, AAtrex, Bicep or Princep by the 
following formula: 
'2.00~ 
Ibs. of 
fertilizer 
per acre 
. 2.000 
lbs. of 
fertilizer 
per acre 
x 
pts./acre of liquid 
or· flowable product = 
pts. of liquid or 
flowable product per 
ton of f8rtilizer 
lbs. of dry product lbs./acre of dry 
X product = per ton of fertilizer 
~recautions: To avoid potential for explosion. (1) Do not 
imPLegnate Cycle or Cycle mixtures on ammonium nitrate. 
potassium nitrate or sodium nitrate either alone or in 
blends with other fertilizers. (2) Do not combine Cycle or 
Cycle mixtures plus any other herbicide with single super­
~osphate (0-20-0) or treble superphosphate (0-46-0) 
because inactivation of the herbicide can occur. (3) Do 
not use Cycle or Cycle mixtures on straight limestone. 
since absorption will not be achieved. Fertilizer blends 
containing limestone can be impregnated. 
Application 
Apply 200-700 pounds of the herbicide/fertilizer mixture 
per acre. For best results, use properly-calibrated equip­
ment and apply the mixture immediately after blending. 
Uniform application of the herbicide/fertilizer mixture is 
essential to prevent possible crop injury. Non-uniform 
application may also result in unsatisfactory weed control. 
In areas where conventional tillage is practiced, a shallow 
incorp0ration of the mixture into the soil may improve weed 
control. On fine- or medium-textured soils in areas where 
soil incorporation is not planned apply the mixture 14 days 
before planting to allow moisture to move the 
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herbicide/fertilizer mixture into the soil. Wheu AAtrex, 
Bicep or Princep is added to the mixture, apply approxi­
mately 30 days brfore planting. 
Pre c a u ill n ; To a v, UOll.t ... eS<!!n ... t ... i"'a"'l'--'c'-'r,-'ol,lp,!....;."'· n .... ',J-· u ...... r:t.y.L. -"'d"'o/.......Onuol.lt"-'u ... s ... e......, ... t..,h""e 
herbiciQe/fertilizer mixture on crops where planting beds 
are to be formed.

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---------------------Cycle Applied Alone 
1. Weeds Controlled 
2 . 
barnyardgrass 
(watergrass) 
crabgrass 
crowfootgrass 
fall panicum 
foxtail millet 
giant foxtail 
goosegrass 
green foxtail 
prairie cupgrass 
red rice 
signalgrass 
(Brachiaria) 
southwestern cupgrass 
witchgrass 
yellow foxtail 
yellow nutsedge 
Eastern black nightshade 
carpetweed 
commo!} ragweed 
Florida pusley 
galinsoga 
lambsquarters 
pigwef>d 
Pennsylvania smart weed 
prickly sida 
sunflower 
Weeds Partially Controlled*: cocklebur; sandbur, seedling 
°johnsongrass, shattercane, Texas panicu r ., velvetleaf, 
'0 yolunteer sorghum, wild proso millet. 
*See General Information section. Control of these weeds 
can be erratic due partly to variable weather conditions. 
Rotationa] Crops: Cycle: (1) If crop treated with Cycle 
alone is lost, corn or Concep-treated grain sorghum (milo) 
may be replanted immediately. Do not make a second broad­
cast appli~ation of Cycle. If the original application was 
banded and the second crop is planted in the untreated row 
middles, a second banded treatment may be applied. 
(2) Barley, oats, rye, or wheat may be planted 4 1/2 months 
following treatment; alfalfa may be planted 4 months fol­
lowing application. Tomatoes may be planted six months 
following application. (3) Any crop on this label in addi­
tion to cotton, peanuts, pod crops, potatoes, safflowers, 
soybeans, root crops, tobacco, cabbage, peppers, stone 
fruits, tree nuts, barley, buckwheat, grain sorqhum (milo), 
oats, rice, rye, or wheat may be planted in the spring fol­
lowing treatment. Clover may be seeded 9 months following 
application. All other rotational crops may be planted 12 
months after application. (4) Cycle Tank Mixtures: For 
Rotational Crops restrictions for Cycle usee'. in tank mix­
tures, refer to the statements/restrictions above for Cycle 
and to the respective product labels of an~ mixing part­
ller (s) for additional statements/restricti'JDs.

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Corn - Cycle Alone 
Apply Cycle early preplant (30-45 days before planting), 
preplant surface, preplant incorporated, or preemergence 
using the appropriate rate from Table 1. Do not use on 
sand or loamy san·j soils with less than 1% organ1c matter. 
Early Preplant and Preplant Surface Applied: Refer to 
instructions for use of Cycle alone under Application 
Procedures. Use on medium- and fine- textuLed soils with 
minimum-tillage or no-tillage systems in CO, IL, IN, lA, 
KS, KY, MN, MO, MT, NE, ND, SO, TN, WI, and WY. Broadcast 
the recommended rate of Cycle for soil texture and percent 
organic matter indicated in Table 1. In no-till corn where 
heavy crop residue exists, the rates in Table 1 should be 
increased by 15%. Under dry conditions, irrigation after 
application is recommended to move Cycle into the soil. 
On medium- and fine-textured soils with minimum- or 
no-tillage systems in DE, MD, MI, NY, OH, PA, VA, and WV, 
preplant surface applications may be applied following the 
directions for use above. If the amount of rainfall 
, results in unsatisfactory length of weed control following 
i .the earlier Cycle treatment, a postemergence application of 
an appropriately labeled broadleaf and/or grass weed herbi­
cide may be used, i.e., AAtrex, Beacon®, Bicep®, 2,4-0, 
Banvel, Basagran®, bromoxynil (Brominal® or Buctril®), 
Laddok® or Marksman®. 
Notes: (1) If the postemergence treatment includes meto­
lachlor, do not exceed the maximum labeled rate for meto­
la~hlor on corn based on soil texture. (2) Observe all 
directions for use, precautions and limitations on the 
label of the postemergent herbicide. 
Preplant Incorpora~qd or Preemergence: Follow instructions 
for use of Cycle a le under Application Procedures. Use 
rates of Cycle for ,oil textures and organic matter levels 
indicated in Table 1. 
Notes: (1) Do not apply more than the labeled application 
rate for a given soil texture per year either as a single 
or split treatment or illegal residues may result. (2) In. 
the event of escape of annual broadleaf weeds following 
preplant surface, preplant incorporated, or preemergence 
treatm',nt with Cycle, follow with a postemergence applica­
tion of an appropriately labeled broadleaf and/or grass 
weed herbicide, i.e., AAtrex, Bdsagran, Beacon, Bicep, 
Brominal, Buctril, Banvel, Laddok, Marksman or 2,4-0. 
(3) If the postemergence treatment includes metolachlor, do 
not exceed the maximum labeled rate for metolachlor on corn 
based on soil texture. 
. '.

) 
) 
Table 1: 
Soil Texture 
COARSE 
Sand, 
loamy sand 
COARSE 
Sandy 
loam 
MEDIUM 
FINE' 
• Muck "or peat 
soils (soils 
with more than 
20% organic 
matter) 
-15-
Cycle* Alone - Early Preplant, Preplant 
Surface**, Preplant ~ncorpo~ated or 
Preemergence - Corn 
Broadcast Rates Per Acre*** 
Percent Organic Matter in Soil 
Less than 1% 1-2.5% 2.5-4% Over 4% 
DO NOT USE 2.5-3 qts. 3-3.5 qts. 4 qts. 
2.5 qts. 2.5-3 qts. 3-3.5 qts. 4 qts. 
. 
3 qts. 3-3.5 qts. 3.5-4 qts. 4.5 qts. 
3 qts. 3.5-4 qts. 4-4.5 qts. 5 qts. 
DO NOT USE 
*00 not use on sweet corn where soils have less than 1% or­
ganic matter. 
**In no-till corn where heavy residues exist, increase the 
rates in Table 1 by 15%. 
***Where heavy infestations of yellow nuLsedge exist, Cycle may 
be applied in tank mixtures with ~ual® formulations to aid in 
control. Refer to the respective Dual label for rate limita­
tions. 
R~: Maximum rate limit per acre per year for all applica­
tions is 6.5 lbs. cyanazine from all sources except on highly 
erodible soils with less tt~n 30% plant residue cover, the rate 
limit is 3 lbs. cyanazine. .

) 
) 
-16-
Corn - Cycle Combinations 
IMPORTANT FOR TANK MIXTURES WITH BICEP OR AATREX (OR OTHER 
BRANDS OF ATRAZINE) - If applying Cycle in tank mixture 
with a~trex or Bicep. all the restrictions and rate limita­
tions appearing on the AAtrex or Bicep label must be fol­
lowed if more restrictive/protective than those on this 
label. In additioll. if lAtrex or B~.cep is/must be ap.,lied 
at rates lower than ~hose recommended on this label. broad­
leaf weed control may be affected. Refer to the AAtrex or 
Bicep label for weeds controlled at the reduced rates. 
1. Tank Mixture with AAtrex or Princep 
In addition to the weeds controlled by Cycle alone, Cycle 
plus AAtrex or Princep, ~pplied preplant surface, preplant 
incorporated or preemergence, also controls such additional 
weeds as follows: cocklebur, common purslane, hairy night­
shade, and velvetleaf. 
Early preplant and Preplant Surface Applied: Follow 
instructions for use of Cycle alone under Application 
Procedures and under application instructions for Cycle 
Alone on corn. Apply Cycle + AAtrex or Princep in CO, IL, 
IN, lA, KS, KY, MN, MO, MT, NE, NO, SO, TN, WI, and WY at 
rates indicated in Table 2. Apply the tank mixtures as a 
split or single treatment in the 3tates above using the 
procedure indicated in the Corn - Cycle Alone - Early Pre­
plant and Preplant Surface ~plied section of the label. 
Preplant Incorpor?ted or Preemergence: Follow instructions 
for use of Cycle alone under Application Procedures. Apply 
the rates of Cycle + AAtrex or Princep indicated in Table 
2 . 
Note: Do not apply more than the labeled rate for a given 
soil texture per year either as a split or single treat­
ment, or illegal residues may result. 
2. Tank Mixture with Bicep 
If a lower rate of atrazine is desired than that applied 
with Bicep alone, a tank mixture of Cycle plus Bicep may be 
used for control of annual weeds. 
Applications may be made early preplant, preplant surface, 
preplant incorporated or preemergence. For control of 
actively growing, emerged annual weeds less than 2 inches 
in height, a contact herbicide will generally not be 
required for u~e with the Cycle plus Bicep tank mixture. 
The use of a nitrogen solution or complete fertilizer solu­
tion in the spray mixture or as the carrier, will improve 
-:-,.

) 
'. i 
) 
-17-
tl. burndown activity of the tank mixture. For weeds 
exceeding 2 inches in height, addition of a cont2ct herbi­
cide (e. g., Gramoxone Extra or Roundup®) to ·the 'nixture is 
recommended in accordance with its label. 
For applications made less than 30 days before planting, 
apply 1/2-3/4 the recommended rate of Cycle Alone for the 
given soil texture and organic matter content in Table 1 in 
tank mixture with 1/2-3/4 the r2te of Bicep alone as speci­
fied in the Bicep label. 
For applications made 30-45 daya before planting, the rate 
of Cycle and Bicep as indicated above may be applied as a 
split treatment with 2/3 of the Cycle and Bicep rates 
applied initially followed by the remaining 1/3 at plant­
ing. 
Notes: (1) Tank mixtures of Cycle and Bicep as described 
above may provide less effective residual control of large 
seeded broadleaf weeds (e.g., velvetleaf and cocklebur) 
than Bicep applied alone at the full rate. (2) If" peren­
nial broadleaf w~eds are present at the time of treatment, 
.the addition of 2,4-D and/or Banvel to the tank mixture in 
accordance with its label may improve performance.

~~ -
Table 2. C:l~le + AAtrex Qr Pr'~!;;ep, Preplant Syrfgce, Pre~gnt In~QrpQ~gteQ 
Qr Preemergence* - CQrn 
Broadcast Rates Per Acre 
Percent 6-iq a'nlc Matter in Soil 
I 
Less than 1% 1-2.5% 2.5-4% 
Qts. Cycle + Qts. Cycle + Qts. Cycle + Qt. 
Lbs. AAtrex** Lbs. AAtrex Lbs. AAtrex Lb 
Nine-O® Nine-O Nine-O Nil 
or Princep or Princep or Princep or 
Soil Texture Caliber 90 Caliber 90 Caliber 90 Ca. 
• 
Coarse 2.5-3 3-3.5 4 
Sand, DO NOT USE + + + 
Loamy Sand .4-1. 2 . 6-1 .4 .Il 
Coarse 2.5 2.5-3 3-3.5 4 
Sandy Loam + + + + 
.6-1.2*** .8-1.4 1-2 1. 
3.0 3-3.5 3.5-4 4. 
Medium + + + + 
.8-1. 4 . 8-2 1-2 1 .. 
3.0 3.5-4 4-4.5 5. ' 
Fine + + + + 
.8-1. 7 1-2 1-2.2 1. . 
. 
Muck or Peat Soil s 
(soils with more than DO NOT USE 
20% organic matter) 
-
*Do not use on sweet corn on soils with less than 1% organic matter. 
**When using AAtrex 4L (or Princep 4L) ; use equivalent rates. One ib. of Nine-' 
Caliber 90 equals 1.8 pts. of 4L.· .. Use Princep instead (f 
AAtrex when heavy infestations of crabgrass or fall panicum are expected. 
***Use the higher rates of AAtrex or Princep when heavy infestat~ons of broadle 
are expected. 
NQte: Maximum ,rate limit per acre per year for all applications is 6.5 lbs •. ey. 
all sources except on highly erodible soils with less than 30% plant residue co' 
limit is 3 lbs. cyanazine.

) 
) 
weeds and suppresses many perennial weeds. Roundup combi­
nations will control emerged annual and perennial weeds 
when applied as directed on the Roundup label. The Cycle + 
AAtrex or Princep provides preemergence control of the 
weeds listed on this label under the Corn - Cycle Combina­
tions - Tank Mixtures with AAtrex or Princep section. 
Application: Apply before, during, or after plantinJ, but 
before the corn emerges, at the rates specified in Table 2. 
Add Gramoxone Extra or Roundup at the following broadcast 
rates: 
Gramoxone Extra: 1.5-2.0, 2.0-2.5 or 2.5-3.0 pts./A 
inch, 3-6 inch, or 6 inch tall weeds, respectively. 
surfactant at 1 or 2 pts./100 gals. of spray mixture 
. 75% or greater or 50-74% nonionic active ingredient, 
respectively. This treatment will not control weeds 
than 6 inches. 
to 1-3 
Apply 
with 
taller 
Note: Do not apply combinations containing Gramoxone Extra 
in suspension-type fluid fertilizers containing clay as the 
spray carrier because the activity of paraquat will be 
reduced. 
Roundup: 1.5 qts./A for existing annual weeds, or 2-4 qts. 
per acre for existing perennial weeds. See the Roundup 
label for weeds controlled and recommended rates for 
specific weeds. 
Apply in 20-60 gals. of water or fluid fertilizer per acre 
with ground equipment. 
Precaution: 00 not use on sweet corn on soils with less 
than 1% organic matter. 
4. Tank Mixture with AAtrex or 2,4-0 or AAtrex plus 2.4-0 or 
AAtrex plus 2,4-0 plus Banvel for Minimum-Tillage or 
No-Tillage Systems 
In minimum-tillage or no-tillage systems where corn is 
planted directly into a cover crop, stale seedbed, estab­
lished sod, or previous crop residues, Cycle applied in 
combination with AAtrex will kill most emerg?d amall annual 
weeds. Apply Cycle + AAtrex or 2,4-0 or AAtrex plus 2,4-0 
"1,

) 
) 
-20-
before, during or after planting, but before corn emerges 
according to the rates in Table 2. Where heavy infestation 
of emerged broadleaf weeds exist, add 0.8-1.6 pts./A of an 
appropriately labeled 3.8 lbs. ai/gal. 2,4-0 amine (such as 
Weedar 64, Weedar 64A, OMA-4 Herbicide, or Formula 40) to 
the spray tank last and apply in a minimum of 25 gals. of 
carrier/A. 
As carriers, nitrogen solutions and ~omplete liquid fertil­
izers, applied before corn emergence, enhance burndown of 
existing weeds, and therefore are recommended instead of 
water. Adi X-77 surfactant at 1.0-2.0 qts/100 gals. of 
diluted spray, or another appropriate surfactant at its 
recommended rate. Apply before weeds exceed 3 inches in 
height. If al~alfa is present, add Banvel to the spray 
mixture at 0.33-0.5 pt./A and apply before alfalfa exceeds 
~ inches in height. 
Precautions: (1) When applying Cycle with AAtrex or 2.4-D 
or AAtrex + 2.4-0 Qr with AAtrex + 2.4-0 + Banvel. do not. 
apply iil fluid fert.;'.lizer after corn emerges. (2) Do not 
use mixtures of Cyr.le plus 2.4-0 or Banvel close to corn 
emergence on coarse-textured soils or injury will occur. 
(3) Do not apply mixtures containing Banvel on sweet corn ._ 
For fields with existing sod grasses (e.g., bromegrass, 
orchardgrass, rye or timothy), when existing weeds exceed 3 
inches in height or when very dry conditions exist, add 
Gramoxone Extra at the rate of 2.5 pts./A in place of or in 
addition to 2,4-0 as indicated above. Do not apply Gramox­
one Extra in suspension-type fluid fertilizer containing 
clay as the spray ~arrier. Observe all directions for use, 
precautions and limitations on the respective product 
labels when applying these products in tank mix combina­
tion. 
Grain Sorghum (Seed Treated with Concep®) - Cycle Alone 
Apply Cycle early preplant, preplant surface, preplant 
incorporated, or preemergence in water or fluid fertilizer 
to grain sorghum using the appropriate rate specified 
below. Apply Cycle to sorghum only when the sorghum seed 
has been properly treated by the seed company with Concep. 
Notes: (1) Do not use Cycle on forage sorghum. (2) Do not 
apply Cycle alone or in tank mixtures on sand and loamy 
sand soils. 
Early Preplant and Preplant Surface-Applied: Refer to 
instructions for use of Cycle under Application Procedures. 
For minimum-tillage or no-tillage systems only, Cycle may 
be applied up to 45 days before planting in CO, IL, lA, KS,

) 
) 
-21-
MO, NE and SD. Use only split applications for treatments 
made more than 15 days before planting, with 2/3 of the 
broadcast rate applied initially and the remaining 1/3 at 
planting. Apply the rate of Cycle indicated in Table 3. 
In no-till sorghum where heavy crop res~due exists, the 
rates in Table 3' should be increased by 15%. Under dry 
conditions, irrigation after application is recommended to 
move Cycle into the soil. 
Preplant Incorporated or Preemergence: Refer to instruc­
tions for use of Cycle under Application Procedures. Apply 
the rates of Cycle indicated in Table 3. Do not incorpo­
rate Cycle more than three inches deep nor use a spike­
toothed harrow, deep tillage disk or rolling basket device 
to incorporate Cycle. 
Precautions; (1) If sorghum seed is not properly treated 
with Concep. Cycle may severely injure the crop. (2) Under 
high soil moisture conditions prior to sorghum emergence. 
injury may occur following the use of Cycle. The crop will 
normally Qutgrow this effect. (3) Do not use Cycle on sor­
ghum grown under dry mulch tillage or injury may occur. 
(4) Do not make more than one preemergence application or 
preplant incorporated application per year. or illegal 
residues may result. (5) Do not apply to furrow-planted 
sorghum until furrows are leveled. (6) Deep planter marks 
or seed furrows should be leveled prior to application. 
(7) Sorghum growing under stress resulting from insects. 
wind. sand cutting. hail damage. other herbicides. minor 
element defici~cy. or cold wet soil. or on hiqhly calcare­
ous soil may be injured or suffer stand loss. 
"lj.

) 
) 
Table 3: 
Soil Texture 
COARSE 
Sand, 
loamy sand 
COARSE 
Sandy 
loam 
MEDIUM' 
FINE 
Muck or peat 
soils- (soils 
-22-
Cycle Alone - Early Preplant. Preplant Surface*. 
Preplant Incorporated or Prcemergence -
Grain Sorghum 
Broadcast Rates Per Acre 
Percent Organic Matter in Soil 
Less than 1% 1-2.5% 2.5-4% Over 4% 
DO NOT USE DO NOT USE DO NOT USE DO NOT USE 
2.5 qts. 2.5-3 qts. 3-3.5 qts. 3.5 qts. 
3 qts. 3-3.5 qts. 3-3.75 qts. 4.0 qts. 
3 qts. 3-3.75 qts. 3.5-4 qts. 4.5 qts. 
with more than DO NOT USE 
20% organic 
matter) 
*In no-till sorghum where heavy residue exists, increase the 
rates in Table 3 by 15%. 
".

) 
'. 
) 
1. 
---------------------------:- I 
:Jl/of?·'-
-23-
Grain Sorghum (Seed Treated with Concep)-Cycle CombinatioQ§ 
Cycle in tank mixture with AAtrex or Bicep may be applied 
in water or fluid fertilizer. Apply Cycle alone or in tank 
mixture only when the sorghum seed has been properly 
treated by the seed company with Concep. 
~e: Do not use Cycle on forage sorghum. 
IMPORTANT: FOR TANK MIXTURES WITH BICEP OR AATREX (OR 
OTHER BRANDS OF ATRAZINE) - If applying Cycle in tank mix­
ture with AAtrex or Bicep. all the restrictions and rate 
limitations appearing on the AAtrex or Bicep label must be 
followed if more restrictive/protective than those on this 
label. In addition. if AAtrex or Bicep is/must be applied 
at rates lower than those recommended on this label. broad­
leaf weed control may be affected. Refer to the AAtrex or 
Bicep label for weeds controlled at the reduced rates. 
Precautions: . (1) APplications of Cycle + AAtrex or Cycle + 
Bicep on highly alkaline soils or on eroded areas where 
calcareous subsoils are exposed may cause sorghum injury. 
(2) If sorghum seed is not properly treated with Concep. 
Cycle + AAtrex or Cycle + Bicep may severely injure the 
crop. (3) Under high soil moisture conditions befor~ 
sorghum emergence. injury may occur following the use of 
Cycle + AAtrex or Cycle + Bicep. The crop wil~rmally 
outgrow this effect. (4) Do not use Cycle + AAtrex or 
Cycle + Bicep on sorghum-9rQwn under dry mulch tillage or 
injury may occur. (5) Do not excee~e recommended rate of 
Cycle + Abtrex or Cycle + Bicep for soil texture and 
organic matter. or illegal residues may result. 
Tank Mixture with AAtrex 
In addition to weeds controlled by Cycle alone, 
Cycle + AAtrex applied early preplant, preplant surface, 
preplant incorporated, or pre emergence enhances the control 
of such weeds as: cocklebur, common purslane, hairy night­
shade, lambsquarters, morningglory, ragweed, smartweed, and 
velvetleaf. 
Early preplant and Preplant Surface-Applied: Refer to 
instructions for use of Cycle under ~rylication Procedures. 
For minimum-tillage or no-tillage systems only, Cycle + 
AAtrex may be applied up to 45 days before planting in IL, 
lA, eastern KS, MO, NE and SO. Use only split applications 
for treatments made more than 15 days before planting, with 
2/3 of the broadcast rate applied initially and the remain­
ing 1/3 at planting. Apply the rates of Cycle + AAtrex 
indicated in Table 4.

) 
) 
-24-
Precautjon: To avoid c~9~_inju~~o nQi use on sand aDd 
loamy~and soils. 
Preplant Incorporat.s>.JL.QX. Preemergence: Refer to instruc­
tions for use of Cycle under A~lication Procedures. Apply 
the rates of Cycle + AAtrex indicated in Table 4. 
Precaution: To avoid crop injury. do not use on sand and 
loamy sand soils. 
Rotational Crops: When atrazine (AAtrex) is applied in 
tank mix combj.nation with Cycle, follow the crop rotation 
restriction~ on the atrazine (AAtrex) label. 
. ::,.

) 
-25-
T- le 4: Cycle + AAtrex - Early Preplant, Preplant Surface, 
Preplant Incorporated or Preemergence - Grain Sorghum 
Broadcast Rates Per Acre 
Percent Organic Matter in Soil 
Less than 1% 1-2.5% 2.5-4% Over 4% 
Qts. Cycle Qts. Cycle Qts. Cyr.le Qts. Cycle 
+ Lbs. + Lbs. + Lbs. + Lbs. 
AAtrex AAtrex AAtrex AAtrex 
Soil Texture Nine-O Nine-O Nine-O Nine-O 
COARSE 
Sand, DO NOT USE DO NOT USE DO NOT USE DO NOT USE 
loamy sand 
COARSE' 2 2-2.5 2.5-3 3 . 
Sandy 
loam .6-1.2 .8-1.4 1-2 1.2-2.2 
2.5 2.5-3 2.5-3.25 3.25 
MEDIUM 
.8-1.4 .8-2 1-2 1.2 -2.2 
2.5 2.5-3.25 3-3.5 3.75 
FINE 
.8-1.7 1-2 1-2.2 1.2-2.2 
Muck or peat 
soils (soils 
with more 
thaI' DO NOT USE 
20% organic 
matter) 
*When using,AAtrex 4L, use equivalent rates. One lb. of AAtr8x 
Nine-O equals 1.8 pts. of AAtrex 4L .. ,.--- ,-

) 
) 
-26-
2. Tank Mixture with Bicep 
3 . 
If a lower rate of atrazine is desired than th:'it applied 
with Bicep alone, a tank mixture of Cycle plus Bicep may be 
used for control of annual weeds. 
Applications may be made early preplant, preplant surface, 
preplant incorporated or preemergence. For control of 
actively growing, emerged annual weeds that do not exceed 
2 inches in height, a contact-type herbicide will generally 
not be required fo"r use with the Cycle plus Bicep tank mix­
tures. The use of a nitrogen solution or complete fertil­
izer solution in the spray or as the carrier will improve 
the burndown activity of the tank mixture. For weeds 
exceeding 2 inches in height, addition of a contact-type 
herbicide (e.g., Gramoxone Extra or Roundup) to the mixture 
is recommended in accordance with its label. 
For applications made less than 30 days before planting, 
apply one-half (1/2) the recommended rate of Cycle Alone in 
Table 3 for t"he given soil texture and organic matter 
content in tank mixture with one-half (i/2) the rate of 
Bicep Alone specified on the Bicep label . 
. For applications made 30-45 days before planting, the rate 
of Cycle and Bicep indicated above may be applied as a 
split treatment with 2/3 of the Cycle and Bicep rate 
applied initially followed by the remaining 1/3 at plant­
ing. 
Notes: (1) Tank mixtures of Cycle and Bicep as described 
above may provide less effective residual control of large 
seeded broadleaf weeds (e.g., velvetleaf and cocklebur) 
than Bicep applied alone at the full rate. (2) If peren­
nial broadleaf weeds are present at time of treatment, the 
addition of 2,4-D O~ Banvel to the tank mixture in accor­
dance with its label may improve performance. 
Tank Mixture of Cycle + AAtrex or Bicep with Gramoxone 
Extra or Roundup for Minimum-Tillage or No-Tillage Systems 
In minimum-tillage or no-tillage systems where sorghum 
(seed treated with Concep) is planted directly into a cover 
crop, stale seedbed, established sod or previous crop resi­
dues, the contact herbicides Gramoxone Extra or Roundup may 
be tank mixed with Cycle or Cycle + AAtrex or Cycle + 
Bicep. When used as directed, the Gramoxone Extra controls 
most emerged annual wellds and suppresses many perennial 
weeds. Roundup combin.ltions will control emerged annual 
and perennial weeds wh~n applied as directed on the Roundup 
label. Cycle or Cycle + AAtrex or Cycle + Bicep provides 
preemergence control of weeds listed on this label under 
the Grain Sorghum - Cycle Combinations - Tank Mixtures with 
\ 
) ,1,1::)' 
l for j

) 
) 
-27-
AAtre><; section. 
Application: Apply before, during or after pianting but 
before sorghum emerges, at the rates specified in Tables 3 
or 4. Add Gramoxone Extra or Roundup at the following 
broadcast rates: 
Gramoxone Extra: 1.5-2.0, 2.0-2.5 or 2.5-3.0 pts./A 
inch, 3-6 inch, or 6 inch tall weeds, respectively. 
surfactant at 1 or 2 pts./IOO gals. of spray mixture 
75% or greater or 50-74% nonionic active ingredient, 
respectively. This treatment will not control weeds 
than 6 inches. 
to 1-3 
Apply 
with 
taller 
Note: Do not apply combinations containing Gramoxone Extra 
in suspension-type fluid fertilizers containing clay as the 
spray carrier because the activity of paraquat will be 
reduced. 
Roundup: 1.5 qts. per acre for control of existing annual 
weeds, or 2.4 qts. per acre for existing perennial weeds. 
See the Roundup label for weeds controlled and recommended 
r~tes for specific weeds. 
,'. ·Apply in a minimum of 20 gals. of water per acre with 
'conventional spray equipment. 
Storaae and Disposal 
Pesticide DisposaJ - Do not contaminate water, food, or 
feed by storage or disposal. Wastes resulting from the use 
of this product may be disposed 0f on site or at an 
approved waste disposal facility. 
Container Disposal - Do not reuse empty container. Triple 
rinse (or equivalent), puncture and dispose of in a 
sanitary landfill, or by incineration, or if allowed by 
state and local authorities, by burning. Keep out of smoke 
from burning containers. 
For minor spills, leaks, etc., follow all precautions a~d 
clean up immediately. Take special care to avoid contami­
nation of equipment and facilities during cleanup and d·~s­
posal of wastes. In the event of a major spill, fire, or 
other emergency, call 1-800-888-8372.

-28-
Preca~cionary Statements 
Hazards to Humans or Domestic Animals 
CAUTION 
This product may be hazardous to your health. 
This product is classified "Restricted Use" because one of the 
active ingredients, cyanazine, at doses which caused severe 
maternal illness in laboratory animals, caused birth defects. 
Keep out of reach of domestic animals, particularly cattle. 
Consumption of this product, spray solutions or water contami­
nated with this product can result in serious illness or possi­
ble death of bovines. 
) Harmful if swallowed, absorbed through skin, or inhaled. Causes 
eye irritation. Avoid breathing vapor or spray mist and contact 
with skin, eyes or clothing. Wash thoroughly with soap and 
water after handling. Remove contaminated clothing and wash 
before reuse. 
.> 
, 
S-,atement of Practical Treatment 
If swallowed: Call a physician or Poison Control Center. Drink 
1 or 2 glasses of water and induce vomiting by touching back of 
throat with finger. Do not induce vomiting or give anything by 
mouth to an unconscious person. 
If in eyes: Flush eyes with plenty of water. Call a physician 
if irritation persists. 
If on skin: Wash with plenty of soap and water. Get medical 
attention. 
If inhaled: Remove victim to fresh air. Get medical attention. 
~ote to Physician: There is no specific antidote. If 
swallowed, induce emesis or lavage stomach. The use of an aque­
ous slurry of activated charcoal should be considered.

) 
) 
-29-
Environmental Hazards 
Do not apply directly to water, to areas where surface water is 
present or to intertidal areas below the mean high water mark. 
Do not c"ntarninate water when disposing of equipment wash 
waters or rinsate. Cyanazine, one of the active ingredients in 
Cycle Herbicide, has been det.ected in surface waters that 
receive run-off from treated areas. To minimize cyanazine run­
off, follow the Best Management pr,ctices outlined in the 
Directions for Use section of this label. 
Groundwater and Surface water Advisory 
Cycle contains the active ingredients metolachlor and 
cyanazine. 
Metolachlor has been identified in limited sampling of ground 
water and there is the possibility that it may leach through 
the soil to ground. water, especially where soils are coarse and 
ground water is near the surface. Following application and 
during rainfall events that cause runoff, metolachlor may reach 
surface water bodies including streams, rivers and reservoir9. 
Ca~emust be taken when using this product to prevent back 
siphoning into wells, spills or improper disposal of excess 
pesticide, spray mixtures or rinsates. 
Check valves or antisiphoning devices must be used on all mix-· 
ing equipment. 
Cyanazine is a pesticide which can move (seep or travel) 
through soil and can contaminate ground water which may be used 
as drinking water. Cyanazine has been found in ground water as 
a result of agricultural use. Ground water. contamination may 
be reduced by diking and flooring of permanent liquid bulk 
storage sites with an impermeable material. Users are advised 
not to apply this product where the water table (ground water) 
is close to the surface and where the soils are very permeable 
(i.e., well-drained soils such as loamy sands). Your local 
agricultural agencies can provide further information on the 
type of soil in your area and the location of ground water. 
AAtrex®, Beacon®, Bicep®, Caliber 90®, Concep®, Cycle®, Dual®, 
Farm-Pak®, Field-Pak®, Nine-O®, and Princep® are trademarks of 
Ciba-Geigy Corporation. 
u.S. Patent Nos. 4,022,611 and 4,478,635 
Agsorb® trademark of Oil-Dri Corporation. 
..

) 
) 
-30-
Banvel® trademark of Sandoz Chemical Corp. 
Basagran® and Laddok® trademarks of BASF Company. 
Brominal® and Buctril® are trademarks of Rhone-Poulenc Chemical 
Company. 
Compex® trademark of KALO Agricultural Chemicals, Inc. 
Gramoxone® trademark of Zeneca Ag Prc.'iucts . 
Celatom MP-79® trademark of Eagle-Piche:.:- Industries, Inc. 
Marksman® trademark of Sandoz Ltd. 
Roundup® trademark of Monsanto Company. 
Unite® trademark of HACO, Inc. 
X-77® ~rademark of Chevron Chemical Company 
e1993 Ciba-Geigy Corporation 
CibaP1ant Protection 
Ci~a-Geigy Corporation 
Greensboro, NC 27419 
CGA 
Revised 
Registered 
Revised 
Revised 
August 18, 1989 
December 13, 1989 
January 24, 1990 
February 19, 1991 
November 5, 1992 
Tank mix with Bicep 
December 16, 1993 
BMP's - ve1vetleaf, 
cocklebur suppression 
Revised 
[GANNONC.LABELC]CYCLEF6 - 12/17/93

) 
) 
-31-
BACK LABEL 
Restricted Use Pesticide 
For retail sale to and use only by Certified 
Applicators or persons under their direct 
supervision and only for those uses covered by 
the Certified Applicator's Certification. See 
Precautionary Statements for reasons this product 
Cycle® 
Herbicide 
is classified Restricted Use 
For weed control in corn 
and grain sorghum 
Active Ingredient: 
Metolachlor: 2-chloro-N-(2-ethyl-
6-meth y1phenyl)-N-(2-methoxy-1-
methylethyl) acetamide ............................... . 
Cyanazine: 2[[4-chloro-6-(ethy1amino)-s-triazin-2-yl] 
amino-]-2-methylpropionitrile ........................ . 
Inert Ingredients: 
Total: 
2 1/2 Gallons 
U.S. Standard Measure 
KEEP OUT OF REACH OF CHILDREN. 
CAUTION 
See directions for use 
in attached booklet. 
EPA Reg. No. 100-716 
EPA Est. 100-LA-1 
Cyc1e® trademark of Ciba-Geiqy Corporation 
C1993 Ciba-Geiqy Corporation 
Ciba Plant Protection 
Ciba-Geigy Corporation 
Greensboro, North Carolina 27419 
eGA 
~IAt::,LJ 
22.0% 
22.0% 
56.0% 
100.0%

) 
) 
-32-
Precautionary Statements 
Hazards to Humans or Domestic Animals .' 
CAUTION 
This product may be hazardous to your health. 
This product is classified "Restricted Use" because one of the 
active ingredients, cyanazine, at doses which caused severe 
maternal illness in laboratory animals, caused birth defects. 
Keep out of reach of domestic animals, particularly cattle. 
Consumption of this product, spray solutions or water contami­
nated with this product can result in serious illness or possi­
ble death of bovines. 
Harmful if swallowed, absorbed through skin, or inhaled. Causes 
eye irritation. Avoid breathing vapor or spray mist and contact 
with skin, eyes or clothing. Wash thoroughly with soap and 
water after handling. Remove contaminated clothing and' wash 
before reuse. 
Statement of Practical Treatment 
'. 
If swallowed: Call a physician or Poison Control Center. Drink 
I or 2 glasses of water and induce vomiting by touching back of 
throat with finger. Do not induce vomiting or give anything by 
mouth to an unconscious person. 
If in eyes: Flush eyes with plenty of water. Call a physician 
if irritation persists. 
If on skin: Wash with plenty of soap and water. Get medical 
attention. 
If inhaled: Remove victim to fresh air. Get medical attention. 
Note to Physician: There is no specific antidote. If swal­
lowed, induce emesis or lavage stomach. The use of an aqueous 
slurry of activated charcoal should be considered. 
Environmental Hazards 
Do not apply directly to water, to areas where surface water is 
present or to intertidal areas below the mean high water mark. 
Do not contaminate water when disposing of eq1lipment wash waters 
0.: rinsate. Cyanazine, one of the active ingredients in Cycle 
Herbicide, has been detected in surface waters that receive run­
off from treated areas. To minimize cyanazine run-off, follow 
the Best Management Practices outlined in the Directions for Use 
section of th~s label.

-33-
Groundwater and Surface water Advisory 
Cycle contains the active ingredients metolachlor and cyanazine. 
Metolachlor has been identified in limited sampling of ground 
water and there is the possibility that it may leach through the 
soil to ground water, especially where soils are coarse and 
ground water is near the surface. Following application and 
during rainfall events that cause runoff, metolachlor may reach 
surface water bodies including streams, rivers and reservoirs. 
Care must be taken when using this product to prevent back 
siphoning into wells, spills or improper disposal of excess pes­
ticide, spray mixtures or rinsates. 
Check valves or antisiphoning devices must be used on all mixing 
equipment. 
) Cyanazine is a pesticide which can move (seep or tra~el) through 
soil and can contaminate ground water which may be used·as 
drinking water.- Cyanazine has been found in ground water as a 
result of agricultural use. Ground water contamination may be 
reduced by diking and flooring of permanent liquid bulk storage 
sit~s.with an impermeable material. Users are advised not to 
apply'this product where the water table (ground water) is close 
to the surface and where the soils are very permeable (i.e., 
well- drained soils such as loamy sands). Your local agricul­
tural agencies can provide further information on the type of 
soil in your area and the location of ground water, 
) 
Chemigation; Do not apply this product through any type of 
irrigation system. 
Container Disposal - Do not reuse empty container. Triple rinse 
(or equivalent), puncture and dispose of in a sanitary landfill, 
or by incineration, or if allowed by state and local authori­
ties, by burning. Keep out of smoke from burning containers. 
[GANNONC.LABELC)CYCLEF6 - 12/17/93