crop-chem-docs/corpus/epa_ppls/100-661.md

# IGRAN 4L

- EPA Reg No: **100-661**
- Registrant: SYNGENTA CROP PROTECTION, LLC
- Signal word: Caution
- Active ingredients: Terbutryn (47.6%)
- Label accepted: 1986-03-17
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000100-00661-19860317.pdf

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) 
(Front Cover) 
Igran~ 4L· 
Herbicide 
For weed control in grain sorghum and 
noncrop land areas 
Active Ingredients: 
Terbutryn: 2-tert-butylamino-4-
ethylamino-6-methylthio-s-
/oF 1/ 
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ACCEPTED' 
; "lA!, 1 71286 
i ,I - " I! ~ 1 t 
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I _' ", i: ~.,., ~ 'i" ", , ; 
,~, Co;'-" .0"'.-':' :_; I;-•• ~: "; .. i., 
~p~J~~~~ r~;Ji~- _~.6t:/ __ , 
triazine ............... -:- ............................... . 45.2% 
2.4% 
52.4% 
100.0% 
Related compounds ..•••.•••.••..•......••..••...•••..•... 
Inert Ingredients: 
Total: 
EPA Reg. No. 100-
Igran 4L contains 4 lbs. active 
ingredient per gal. 
Keep Out of Reach of Children. 
CAUTION 
See additional precautionary statements 
at end of label booklet. 
See directions for lIse inside booklet. 
2 1/2 Gallons 
U.S. Standard Measure 
CIBA-GEIGY 
01985 CIBA-GEIGY Corporation 
Agricultural Division 
CIBA-GEIGY Corporation 
Greensboro, NC 27419 
.'. 
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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 uSing this product. ---------
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 carefully. How­
ever, it is impossible to eliminate all risks inherently associ­
ated 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 application all of which are beyond the control of 
CIBA-GEIGY or the Seller. All such risks shall be assumed by the 
Buyer. 
CIBA-GEIGY warrants that this product conforms to the chemical 
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 Merchantability or any other 
express or implied warranty. In no case shall CIBA-GEIGY or the 
Seller be liable for consequential. special, or indirect damages 
resulting from the use or handling of this product. CIBA-GEIGY 
and the Seller offer this product, and the Buyer and user accept 
it, subject to the foregoing Conditions of Sale and Warranty, 
which may be varied only by agreement in writing signed by a duly 
authorized representative of CIBA-GEIGY. 
. , ... , , 
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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 PRECAUTIONS AND DIRECTIONS FOR USE ON THIS 
LABEL MAY RESULT IN CROP INJURY, POOR PERFORl-IANCE, AND/OR ILLEGAL 
RESIDUES 
General Informat1on 
Igran 4L is a selective herbicide for control of many annual 
broadleaf weeds and grasses. The weeds controlled are as fol­
lows: 
Sorghum 
annual groundcherry 
carpetweed 
crabgrass 
foxtail 
junglerice 
kochia 
lambsquarters 
morningglory 
pigweed 
puncturevine 
ragweed 
Russian thistle 
smartweed 
velvetleaf 
barnyardgrass 
(watergrass) 
Noncrop Areas 
barnyardgrass 
blue mustard 
carpetweed 
chickweed 
China lettuce 
cocklpb'lr 
aogfennel 
fiddleneck 
field pennycress 
green foxtail* 
gromwell 
henbit 
kochia 
nightshade 
pepper weed 
pigweed 
purslane 
tarweed 
teaweed 
tumble mustard 
tumbleweed 
white sweet clover 
wild buckwheat* 
wild mustard 
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*1n fallowed areas, 19ran 4L gives partial control of gre,en,', 
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foxtail and wild buckwheat. "" , 
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Following many yea~s of continuous use of this p~oduct and chem­
ically related p~oducts, biotypes of some of the weeds listed on 
this label have been ~epo~ted which cannot be effectively con­
trolled by this and related he~bicides. Whe~e this is known o~ 
suspected and weeds controlled by this product are expected to be 
present along with resistant biotypes, we ~ecommend the use of 
this product in ~egistered combinations or in sequence with other 
registered he~bicides which are not triazines. If only resistant 
biotypes are expected to be present, use a ~egistered non­
triazine herbicide. Consult with your State Ag~icultu~al Exten­
sion Service for specific recommendations. 
Ig~an 4L is applied before weeds emerge and enters weeds th~ough 
their roots after germination. Preemergence effectiveness de­
pends, therefore, on rainfall or ir~igation to move Igran 4L into 
the soil. Very dry soil conditions may necessitate a shallow 
cultivation. When applied to emerged weeds, Ig~an 4L provides 
foliar knockdown of existing weeds and resi0ual control of late~ 
ge~minating weeds. 
In each case whe~e a range of ~ates is given, the lower ~ate 
should be used on ~elatively coarse-textu~ed soils or soils low 
in organic matter; the highe~ rate should be used on ~elatively 
fine-textured soils or soils high in organic matter. 
For Igran 4L alone on sorghum, nonpressu~ized liquid fertilizer 
may replace all or pa~t of the wate~ as carrier for ground appli­
cation. 
Application Procedures 
Ground Application: Use conventional ground sprayers equipped 
with nozzles that provide accurate and uniform application. Be 
certain that nozzles are uniformly spaced and are the s~me size. 
Calibrate sprayer before use and recalib~ate at the sta~t of each 
season and when changing carri~rs. Unless otherwise specified, 
use a minimum of 10 gals. of spray mixture/A for all applications 
(with or without surfactant) with g~ound equipment. 
Use a pump with capacity to (1) maintain 35-40 psi at noulcs, : ... 
(2) provide sufficient agitation in tank to keep mixture' .in· 'sus':' 
pension, and (3) to provide a minimum of 20% bypass at all' times~: 
Use centrifugal pumps which provide propelle~ shea~ action for "'" 
dispersing 'and mixing this product. 
L •• , 
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I -5-
Use screens to protect the pump and to prevent nozzles from 
clogging .. screens placed on the suction side of the pump should 
be 16-mesh or coarser. Do not place a screen in the recircula­
tion line. Use 50-mesh or coarser screens between the pump and 
boom, and where required, at the nozzles. Check nozzle manu­
fact~rer's recommendations. 
For band applications, calculate amount to be applied per acre as 
follows: 
band width in inches 
row width in 1nches x broadcast rate 
per acre = amount needed 
per acre of field 
Aerial Application: Use aerial application only where broadcast 
ap;)Hcations are s?ecified. Apply Igran 4L alone or in combina­
ti)ns in a minimum of 5 gals. of water per acre. Avoid applica­
ti~ns under conditions where uniform coverage cannot be obtained 
or where excessive spray drift may occur. In order to assure 
that spray will be controllable within the target area when used 
according to label directions, make applications at a maximum 
height of 10 ft., using low drift nozzles at a maximum pressure 
of 40 psi, and restrict application to periods when wind speed 
does not exceed 10 mph. To assure that spray will not adversely 
affect adjacent sensitive nontarget plants, apply Igran 4L alone, 
or in combination with Milogard®, by aircraft at a minimum upwind 
distance of 300 ft. from sensitive plants, or apply Igran 4L + 
AAtrex® and Igran 4L + AAtrex + paraquat at a minimum upwind 
distance of 500 ft. from sensitive plants. For additional pre­
cautions, see Precautionary Statements section at the end of the 
label. 
Avoid application to humans or animals. ~lagmen and loaders 
should avoid inhalation of spray mist and prolonged contact with 
skin, and shoulc wash thoroughly before eating and at the end of 
each day's operation. 
Application in water or liquid .fertilizer: Nitrogen solution or 
complete liqu1d fert111zer may replace-aIl or part of the water 
as a carrier. Check the compatibility of this product with 
liquid fertilizer and/or nitrogen solution as shown below before 
use. Do not apply in nitrogen solution or complete liquid, :"'" 
fertilizer after sorghum emerges. '".',' : .. ", 
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l 1 -6-
Compatibility Test: Since liquid fertilizers can vary, even 
within the" same analysis, always check compatibility with herbi­
cide(s) each time before use. Be especially careful when uSing 
complete suspension Jr flUid fertilizers as serious compatibility 
problems are more likely to occur. Commercial appl~cation equip­
ment may improve compatibility in some instances. The following 
test assumes a spray volume of 25 gals. per acre. For other 
spray vollmes, 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 one of the jars add 1/4 tsp. or 1.2 milliliters of a com­
patibility agent approved for this use, such as Compex® or 
Unite~ (1/4 tsp. is equivalent to 2 pts. per:"O gals. 
spray). Shake or stir gently to mix. 
3. To both 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 con­
centrates last. After each addition, shake or stir gently 
to thoroughly mix. The appropriate amount of herbicides for 
this test follows: 
Dry herbi,-,~des: For each pound to be applied per acre, 
add 1.5 level teaspoons to each jar. 
Liquid herbicides: For each pint to be applied per acre, 
add 0.5 teaspocn or 2.5 milliliters to 
each jar. 
4. After adding all ingredients, put lids on and tighten, and 
invl!rt each jar ten times to mix. Let the mixtures stand 15 
minutes and then look for separation, large flakes, precipi­
tates, gels, heavy oily film on the jar, or other signs of 
incompatibility. Determine if the compatibility agent is 
needed in the spray mixtu:e by comparing the two jars. If 
either mixture separates, but can be remixed readily, the 
mixture can be sprayed as long as good agitation is used. 
If the mixtures ~re incompatible, test the following methods 
of improving compatibility: (A) slu~ry the dry herb~~ide(~)" 
in water before addition, or (B) add 1/2 of th~ compaf~bil~ 
ity agent to the fertilizer and the other 1/2 to the emulsi­
fiable concentrate or flowable herbicide before addition to 
the mixture. If incompatibility is still observed, do not 
use the mixture. " 
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Mixing Procedures - All Uses: (1) Be sure sprayer is clean and 
not-contaminated with any other materials, or crop injury or 
spraye~ clogging may result. (2) Fill tank 1/4 full with clean 
water, nitrogen solution, or complete liquid fertilizer. 
(3) Start agitation. (4) Be certain that the agitation system is 
working properly and creates a rippling or rolling action on the 
liquid surface. (5) Pour product directly from the container 
into tank. (6) Continue filling tank until 90% full. Increase 
~gitation if necessary to maintain surface acticn. (7) Add 
emulsifiable oil, oil concentrate, or tank mix herbicide(s) after 
this product is thoroughly suspended. (8) Finish filling tank. 
(9) Empty tank as completely as possible before refilling to 
prevent buildup of oil or emulsifiable concentrate residue. 
Maintain agitation to avoid separation of materials. (10) If an 
oil or emulsifiable concentrate film starts to build up in tank, 
drain it and clean with strong detergent solution or solvent. 
(11) Clean sprayer thoroughly immediately after use by flushing 
system with water containing a detergent. 
Grain Sorghum 
Igran 4L may be applied alone or in tank mix combination with 
either AAtrex or Milogard prior to planting with shallow incorpo­
ration, at planting time, or immediately following. planting, but 
before weeds and sorghum emerge. Igran 4L may also be applled in 
tank mix combination with AAtrex and paraquat where grain sorghum 
will be planted directlj into cover crop, established sod, or in 
previous crop residues. Apply during or after planting, but 
before sorghum emerges. Do not apply to emerged sorghum. When. 
applying preplant with shallow incorporation, apply within 
2 weeks of planting and incorporate into the top 1-2 inches of 
soil using a rolling cultivator, rotary hoe, spike- tooth harrow, 
or similar implement. For sorghum planted on beds, apply and 
incorporate after bed f0rmation. 
In case of planting failures, sorghum may be replanted into soil 
previously treated with Igran 4L or Igran combinations. Do not 
apply a second broadcast application, or injury may occur. If 
Igran 4L or Igran combinations are applied in a band, and sorghum 
is replanted in the untreated row middles. Igran 4L or Igran 
combinations may be applied in a band to.~he second planting. 
If irrigation is necessary, irrigate within the first 36 :J~~~S 
after planting or wait until after the sorghum is at least two 
inches· tall, or injury may occur.

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Igran 4L Alone: Apply Igran 4L at the rate indicated in Table 1 
or 2. 
Table 1 
--- -------- ------~.- ._--------_._---- -~----- ~- -- --- -----------~-----.- -
Grain Sorghum 
Annual Broad leaf and Grass Weed Control 
Region 
All sorghum 
growing 
regions of 
the U.S.; 
except states 
shown below 
Eastern 
Colorado, 
South Dakota. 
Illinois, 
Iowa, 
Kansas, 
Minnesota, 
Missouri, and 
Nebraska 
Soil 
Texture 
sand, 
loamy sand 
sandy loam 
to loam 
Broadcast Rate 
Per Acre 
DO NOT USE 
2 qts. 
----------- ------------ ----
silt loam 2.4 qts. 
to clay 
sand DO NOT USE 
loamy sand 1.6-2 qts. 
sandy loam 2 qts. 
to loam 
----------- - ----------- -----
silt loam 
to clay 
2.4 qts.

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Table 2 
Grain Sorghum 
Annual Broadleaf Weed Control Only 
Region 
Soil 
Texture 
Broadcast Rate 
Per Acre 
sand 0.8 qts. Kansas, 
Oklahoma, ~.------------.-----
New Mexico, 
Texas, and the 
desert regions 
of Arizona and 
California 
loamy sand 1.2 qts. 
----------- -------------
all other 
soil 
textures 
1.6 qts. 
Igran 4L + Milogard or Igran 4L + AAtrex: A tank mixture of 
Igran 4L + Mllogard or Igran 4L + AAtrex can be used in the 
regions indicated below, for more consistent weed control than 
when Igran 4L is used alone. Apply the tank mixture at the rate 
indicated in Table 3. Do not use either combination on sand or 
loamy sand soils. 
.. . . .. , 
. ..... .

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Table 3 
Grain Sorghum 
Annual BroadleaE and Grass Weed Control 
Region 
Illinois, 
Iowa, 
Eastern Kansas, 
Minnesota, 
Missouri, and 
Eastern and 
Central 
Nebraska, 
South Dakota 
Central 
Kansas, 
Western 
Nebraska, 
Oklahoma, and 
Texas 
----------
Eastern 
Colorado, and 
Western Kansas 
Broadcast Rate Per Acre 
Soil 
Texture 
---------j-
Igran 4L 
Milogard 
~laxxo!D 90* 
AAtrex 
Nine-O<!>* 
--+---------
sandy 1.6 qts. 0.45 lb. DO NOT USE 
loam 
loam and 1.6-2 qts. DO NOT USE 0.9 lb. 
finer 
sandy 1.6 qts. 
loam 
loam and 1.6-2 qts. 
finer 
sandy 
loam and 
finer 
1 • 6 qts. 
0.45 lb. DO NOT USE 
0.9 lb. DO NOT USE 
0.45 lb. DO NOT USE 
_________ -L __ 
*When using Milogard 4L, Milogard BOW, AAtrex 4L, AAtrex 4LC or 
AAtrex BOW, use equivalent rates. 0.9 lb. of Nin~-O or Maxx 90 
equals 1.0 lb. of BOW. 0.9 lb. of Nine-O or Maxx 90 equals 1.6 
pts. of 4L or 4LC. : ..... . . 
to •••• 
. ..... 
.... . . . . . . . 
. ..... • 
..... . .. . . . '" .. 
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Igran 4L + AAtrex + Paraquat: Apply the tank mixture at the 
rates indicated In-Table 7-.- Refer to paraquat label concerning 
directions, limitations, and cautions for use of that product. 
Apply in 20-40 gals. diluted spray per acre. Add a nonionic 
surfactant such as X-77® at 1 to 2 pts. per 100 gals. diluted 
spray. Use only water or nitrogen solutions as a carrier. Add 
Igran to spray tank first, mixing thoroughly in carrier. Next, 
add AAtrex, paraquat and X-77. Maintain agitation of carrier at 
all times. 
Table 4 
Grain Sorghum 
~roadleaf and Grass Control 
Broadcast Rate Per Acre 
Soil Texture Igran 4L 
-----------------+------
COARSE: DO NOT USE 
Sand, loamy sand 
MEDIUM: 
Loam, silt loam, 1.6 qts. 
silt 
FINE: 
Sil ty clay loam, 
sandy clay loam, 
clay loam, 2 qts. 
sandy clay, 
sil ty clay, 
clay 
AAtrex 
Nine-O* 
DO NOT USE 
0.9 lb. 
1.8lbs. 
Paraquat 
DO NOT USE 
1.0-2.0 pts. 
1.0-2.0 pts. 
.............. 
*When using AAtrex 4L, AAtrex 4LC or AAtrex 80W, use equivaolent 
rates. 0.9 lb. of Nine.-Q equals 1.6 pts. of 4L or 4LC. 0.9 lbo~ooo 
of Nine-O equals 1 lb. of 80W. 
o 
............ 
.. .......... 
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............ .... .. .. .... .... .. .. .... 
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Winter Weed Control in Texas: For postemergence control of 
winter weeds only, such as henbit (purple top), seedling dock, 
and annual thistle on fall bedded land in the Texas Gulf Coast 
and Blackl-ands of Texas. apply 0.6-0.8 qt. of 19ran 4L per acre. 
postemergence to the weeds in the fall or winter to land that 
will be planted to sorghum the following spring. For best 
results. add a suitable surfactant. such as X-77. at the rate of 
0.5% of the spray volume, an emulsifiable oil at the rate of 1.0% 
of the spray volume. or an oil concentrate at the rate of 1 qt. 
per acre. 
Normal programs of weed control may be used in the following 
sorghum crop. 
Note: To avoid crop injury or illegal residues, do not plant any 
crop except grain sorghum the spring following this treatment. 
Precautions: Igran 4L alone and Igran 4L combinations - To avoid 
crop lnjury, 1) apply only on sorghum planted after the minimum 
sOLI temperature has reached 60"F or Inore for at least three 
consecutlve days, 2) do not walt more than two days after plant­
lng to apply, 3) do not apply over emerged sorghum, 4) do not 
apply to millets, sudan-sorghum hybrids, or sorghum breeding 
stocks, 5) do not apply to sorghum growing on alkall soils, 
caliche outcroppings, or where cuts, fills, or erosion have 
exposed calcareous SUbSOll, 6) do not make a broadcast applica­
tlon to sorghum planted ln furrows deeper than two inches to 
avold concentration of herbiclde ln the seed furrow. WI~of 
the band should not exceed the width of the bottom of the furrow, 
and 7) do not apply a second appllcation to the same crop. 8) 
Ralnfall or overhead irrigatlon at the time of sorghum emergence 
and until sorghum lS 2 inches tall may cause crop inJury. 
. ...... .. • . • · • • • • .. · ...... · • .. . .... • ..... · · ...... • 
· ...... • • · •• •• • 
· · ........ .. • · .. •• • ... • • .. ·

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Suggestions for Crop Rotation: 
Following Igran 4L Alone: 
1) Sorghum stubble should be plowed (disk or moldboard) prior to 
planting the next crop. 
2) Rotational crops may be planted as follows to avoid illegal 
residues: 
4 months: winter wheat 
7 months or longer: all other crops 
following normal agricultural practices and planting dates. 
Following Igran 4L + AAtrex and Igran 4L + AAtrex + paraquat: To 
avoid crop injury: 1) land treated with Igran 4L + AAtrex should 
not be planted to any crop except corn or sorghum until the fol­
lowing year. 2) do not rotate with crops other than corn or 
sorghum the next year if Igran 4L was applied after June 10. 
3) do not plant sugar beets, tobacco, vegetables (including dry 
beans), spring-seeded legumes, and grasses the following year. 
4) Injury may occur to soybeans planted in north central and 
northwest Iowa, south central and southwest Minnesota, southeast 
South Dakota, and northeast Nebraska the year following an appli­
cation on soils having a calcareous surface layer. 
Following Igran 4L + Milogard: 
Sorghum, cotton, or corn may be planted 12 months after applica­
tion. All other crops may be planted 18 months after applica­
tion. 
When applying Igran combinations, see the General Information 
section and caution statements on the Igran label, and precau­
tions listed on the AAtrex and Milogard labels for further infor­
mation. 
Chemical Fallow 
Wheat-Sorghum-Fallow: AAtrex 4L (4LC), AAtrex 80W, or AAtrex 
Nlne-O may be used to control annual weed~ after wheat hqt~~~t 
and in the following scrghum crop when grown under minimUlft< ~il­
lage. Refer to the AAtrex label for directions, precautions, 
and limitations. 
• • ..... c • . 
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· . . .... • · .... 
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-14-
Tank Mixtures for Wheat Sorghum Fallow 
If weeds are present at time of application (in late July or 
August following wheat harvest), Igran 4L may be tank mixed with 
AAtrex to control existing annual weeds. Broadcast 1.6-2 qts. of 
Igran 4L plus 6 pts. of AAtrex 4L (4LC) (or 3.75 Ibs. of AAtrex 
BOI~, or 3.3 lbs. of AAtrex Nine-O) per acre. Add 1-2 pts. of a 
nonionic surfactant (such as X-77) per 100 gals. of spray mix­
ture. Add Igran 4L to the spray tank first and thoroughly mix 
with the water. Then add the AAtrex, followed by the surfactant. 
Use the 2 qt. rate of Igran 4L if weeds are 4-6 inches tall. 
This mixture will not control weeds taller than 6 inches. Plant 
sorghum into the wheat stubble the following spring with minlmum 
dlsturbance of the SOlI. Use a surtace planter or a planter 
leaving a shallow furrow. If weeds are present at the time of 
sorghum planting, remove them with a sweep plow or other suitable 
implement before planting. Refer to the AAtrex label for further 
directions, precautions, and limitations. 
Note: To avoid illegal residues, do not graze or feed forage 
from treated areas. 
Wheat-Corn-Fallow (Kansas and Nebraska): AAtrex 4L (4LC), AAtrex 
BOW, or AAtrex Nine-O may be used to control annual weeds after 
wheat harvest and in the following corn crop when grown under 
minimum tillage. Refer to the AAtrex label for directions, pre­
cautions, and limitations. 
Tank Mixtures for Wheat-Corn-Fallow (Kansas and Nebraska) 
If weeds are prese~t at time of application (in late July or 
August following wheat harvest), Igran 4L may be tank mixed with 
AAtrex and applied to control existing annual weedh. Follow 
directions for use in the "Wheat-Sorghum-Fallow" section above, 
substituting corn for referenc~s to sorghum. 
Wheat-Fallow-Wheat (Colorado, Kansas. Montana. Nebraska, North ...... Dakota, South Dakota, and Wyoming): AAtrex 4L (4LC), AAtt~. 801'1., . : 
or AAtrex Nlne-O may be used for preemergence control of ,illl'lual .,., .. 
weeds during the fallow period of a wheat-fallow-wheat rotation ..... 
If AAtrex is applied alone in late summer after wheat harvest, ' .. " , Igran 4L may be applied the following spring at 1.6-2 qqi./~ to ..... 
.,.,. , 
. 
control escaping weeds. Add 1-2 pts. of a nonionic sur f<t(:'Caltt 
(such as X-77) per 100 gals. of spray mixture. Use the 2 qt. 
rate if weeds are 4-6 inches tall. Igran 4L will not contcal 
weeds taller than 6 inches. To avoid crop injury or illeyul' :::::' 
residues, treat wi th Igr'ln 4L only once dur ing the same f~.I:1IJw

/ ,~-, r ) I 
-15-
period, and plant wheat no sooner than 4 months after application 
of the Igran 4L alone and no sooner than 12 months after the 
AAtrex application. Refer to the AAtrex label for directions, 
precautions, and limitations. 
Tank Mixtures for Wheat Fallow-Wheat (Colorado, Kansas, Montana, 
Nebraska, North Dakota, South Dakota, and wyoming) 
If weeds are present at time of application (normally in late 
July or August following wheat harvest), Igran 4L may be tank 
mixed with AAtrex to control existing annual weeds. Broadcast 
1.6-2 qts. of Igran 4L plus 1-2 pts. of AAtrex 4L (4LC) (or 0.6-
1.25 lbs. of AAtrex 80W, or 0.5-1.1 lbs. of AAtrex Nine-O) per 
acre. Add 1-2 pts. of a nonionic surfactant (such as X-77) per 
100 gals. of spray mixture. Add Igran 4L to the spray tank first 
and thoroughly mix with the water. Then add the AAtrex, followed 
by the surfactant. Use the 2 qt. rate of Igran 4L if weeds are 
4-6 inches tall. This mixture will not control weeds taller than 
6 inches. Treat with this tank mixture only once during the same 
fallow period. Use tillage to control weeds which escape during 
the fallow period. Plant wheat no sooner than 12 months after 
application. Refer to the AAtrex label for further directiuns, 
precautions, and limitations. 
Note: To avoid illegal residues, do not feed forage or graze 
treated areas to livestock for six months following application. 
Wheat-Fallow-Wheat, Sorghum-Fallow-Wheat (Great Plains, including 
Oklahoma, Northern Texas) 
Apply Igran 4L preemergence or postemergence at 1.6-2 qts./A in 
the spring at the start of the fallow period (as soon as possible 
following harvest in a winter wheat-fallow-wheat rotation). Use 
the higher rate when weeds are 4-6 inches tall. Igran 4L will 
I 
not control weeds taller than 6 inches. Postemergence weed con­
trol is improved by adding a nonionic surfactant, such as X-77 a,t;"" 
1-2 pts. per 1':'0 gals. of spray mixture, an emulsi fiable, tJ'i"I, at: ': 
2-4 qts./A or an oil concentrate at 1-2 pts./A. Treat only'onca"", 
during the fallow period, and do not plant wheat sooner than ',,' 
4 months after appl ication (2 months in Kansas, Oklahoma, and "", , 
northern Texas). Shallow cultivation or paraquat at 1-2,pt~./A '~'" 
X-77 surfactant at 1-2 pts. per 100 gals. of spray solut!b'rt'lnay 
be used to control weeds which escape or reinfest during the 
fallow season. " , , . " . 
Note: To avoid illegal residues, do not feed green forag~:~r. 
graze treated areas for 6 months following application. " 
"

-16-
Tank Mixtures for Wheat-Fallow-Wheat (Great Plains, including 
Oklahoma," Northern Texas) 
for control uf established weeds, tank mix 19ran 4L with one of 
the following herbicides, or stubble plow to control large estab­
lished weeds. The following tank mixes will not control weeds 
taller than 6 inches. Use the higher rate of each product when 
weeds are 4-6 inches tall. To avoid crop injury or illegal resi­
dues, treat only once during the fallow period and do not plant 
.,heat sooner than 4 months after application (2 months in Kansas, 
Oklahoma, and northern Texas). Shallow cultivation may be used 
to control weeds which escape during the fallow season. A non­
ionic surfactant, such as X-77 at 1-2 pts. per 100 gals. of spray 
mixture, should be added to each tank mix. 
Note: To avoid illegal residues, do not feed green forage or 
graze treated areas for 6 months following application. 
Paraquat: Apply 1-2 pts./A of paraquat in tank mix with 1.6-2 
qtS./A of 19ran 4L if weeds are present at application. Refer to 
the paraquat label for further directions, precautions, and wheat 
rotation restrictions. 
2,4-0 [various labeled amine formulations): Apply 0.5-1 lb. 
active ingredient per acre of 2,4-0 in tank mix with 1.6-2 qts./A 
of 19ran 4L. Refer to the 2,4-0 labels for further directions, 
precautions, and wheat rotation restrictions. 
Bladex® BO\q: Apply 
qts./A of 19ran 4L. 
tions, precautions, 
2 lbs./A of Bladex BOW in tank mix with 1.6-2 
Refer to the Bladex lacel for further direc­
and wheat rotation restrictions. 
Sencor [SOWP, 4, OF) (Colorado, Kansas, Montana, Nebraska, 
Wyoming only): Apply 0.5-0.67 lb./A of Sencor OF, 0.75-1 pt./A 
of Sencor 4, or 0.75-1 Ib./A of Sencor SOWP in tank mix ~ith 
1.6-2 qtS./A of 19ran 4L. To avoid crop injury or illegal resi­
dues, do not plant wheat sooner than 4 months after application. 
Refer to the Sencor labels for .further directions, precautions, 
and wheat rotation restrictions. 
" ............ .. .. 
" 
.., ........ . 
" 
". " 
" .. " 
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" " .... " .. 
!

.' 
-17-
Igran 4L provides weed control on railroad rights-of-way and on 
other noncrop land sites. 
DO NOT USE THIS PRODUCT FOR NONSELECTIVE WEED CONTROL ON LAND TO 
BE CROPPED, NEAR ADJACENT DESIRABLE TREES. SHRUBS, OR PLANTS, OR 
IN GREENHO(SES, OR INJURY MAY OCCUR. 
Apply Igran 4L to emerged actively growing weeds not more than 6 
inches in h@ight at 2-2.4 qts.jA. Apply in at least 20 gals. of 
water per acre. A surfactant such as X-77, duPont I'IK, or Tr:onic 
may be added to the spray mixture at the rate of 2 qts./l00 gals. 
of spray (0.5% of spray volume). Cover weeds thoroughly with 
spr:ay for good control. For extended weed control, Igran 4L may 
be applied in tank mix combination with Atr:atol® formulations 90 
and 801'1. and Princep® formulations (4L, BOW, and Caliber® 90). 
Refer tJ the Atratol and Princep labels for use instructions for 
these pr:oducts. 
Note: Agitate Igran and Igran tank mixtur:es during the tank 
filling and spraying process. Empty the spray tank during the 
spraying operation. 
STORAGE AND DISPOSAL 
Do not contaminate water, food, or feed by storage, disposal. 
Pesticide: Pesticide wastes are toxic~ Improper disposal of 
excess pesticide, spray mixture, 0< rinsate is a violation of 
federal law. If these wastes cannot be disposed of by use 
according to label instructions, contact your State Pesticide or 
Environmental Control Agency, or the Hazardous Waste Representa­
tive at the nearest EPA Regional Office for guidance. 
Container: Triple rinse (or equivalent), or puncture and dispose 
of in~anitary landfill, or by incineration, or by open burn-
ing, if allowed by state and local authorities. If burned, keep ...... 
out of smoke. 
. .. ' 
, ...... . . .... 
••• ' t" 
. .. "

-18-
For minor spills. leaks. etc., fOllow all precautions indicated 
on this label and clean up immediately. Take special care to 
avo!d contamination of equipment and facilities during cleanup 
procedures and disposal of wastes. In the event of a major 
spill, fire or other emergency, call (919)292-7100 day or night. 
r
-------· --------------------.------------------- -----
~recautionary Statements 
Hazards to Humans and Domestic Animals 
CAUTION 
Harmful if inhaled or absorbed through the skin. Causes 
moderate eye irritation. Avoid contact with skin, eyes or 
clothing. Avoid breathing vapor or spray mist. \~ash 
thoroughly with soap and water after handling. Remove and 
wash contaminated clothing before reuse. 
Statement of Practical Treatment 
If in Eyes: Immediately flush with plenty of water. Get 
medical attention i{ irritation develops or persists. 
If on Skin: Wash with plenty of soap and water. Get medical 
attention if irritation develops or persists. 
NOTE TO PHYSICIAN: There is no specific antidote for Igran 
4L. If this product is ingested, induce emesis or lavage 
stomach. The use of an aqueous slurry or activated charcoal 
may be considered. 
Environmental Hazards 
Do not contall~nate domestic or irrigation water supplies, or 
lakes, streams, or ponds. Do not apply directly to water or 
wetlands. 
"'" . . 
Atratol® trademark of CIBA-GEIGY 
AAtrex® trademark of CIBA-GEIGY for atrazine 
Bladex® trademark of Shell Chemical Company for cyanazinc····· 
Caliber® trademark of CIBA-GEIGY , .. 
compex® trademark of KALO Agricultural Chemicals, Inc. 
'. 
'" .. , • 
',.' . 
"'" . , . 
'." .. 
' .. ,

f1 i I ,) I 
I 
-19-
Igran® trademark of CIBA-GEIGY for terbutryn 
Maxx® trademark of CIBA-GEIGY 
Milogard® trademark of CIBA-GEIGY for propazine 
Nine-O® trademark of CIBA-GEIGY 
Princep® trademark of CIBA-GEIGY for simazine 
Unite® trademark of Hopkins Agricultural Chemical Com~any for 
compatibility agent HA-914 
X-77® trademark of KALO Agricultural Chemicals, Inc. 
C1985 CIBA-GEIGY Corporation 
Agricultural Division 
CIBA-GEIGY Corporation 
Greensboro, North Carolina 27419 
., . 
, , 
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" . , 
,~ .. 
. ,

-20-
(Back Cover) 
Igran® 4L 
Herbicide 
For weed control in grain sorghum and 
noncrop land <~eas 
Active Ingredients: 
Terbutryn: 2-tert-butylamino-4-
ethylamino-6-methyltllio-s-
triazine .......•.•..•.• : ..•.......••.................... 
Related compounds ......•......•••.•.•.................•. 
Inert Ingredlents: 
Total: 
EPA Reg. No. 100-
Igran 4L contains 4 lbs. active 
ingredient per gal. 
Keep Out of Reach of Children. 
CAUTION 
S~e additional precautionary statements 
at end of label booklet. 
See directions for use inside booklet. 
2 1/7 Gallons 
U.S. Standard Measure 
CIBA-GEIGY 
~1985 CIBA-GEIGY Corporation 
Agricultural Division 
CIBA-GEIGY Corporation 
Greensboro, NC 27419 
45.2% 
2.4% 
52.4% 
100.0% 
.. , , , 
. , , 
"

-21-
Precautionary Statements 
Hazards to Humans and Domestic Animals 
CAUTION 
Harmful if inhaled or absorbed through the skin. Causes moderate 
eye irritation. Avoid contact with skin, eyes or clothing. 
Avoid breathing vapor or spray mist. Wash thoroughly with soap 
and water after handling. Remove and ;:ash contaminated clothing 
before reuse. 
Statement of Practical Treatment 
If in Eyes: Immediately flush with ple~ty of wate~. Get medic&l 
attentlon if irritation develops or persists. 
If on Skin: Wash with plenty of soap and water. 
attentlon ~f irritation develops or persists. 
Get medical 
NOTE TO PHYSICIA~: There is no specific antidote for Igran 4L. 
If this product is ingested, induce emesis or lavage stomach. 
The use of an aqueous slurry o~ activated charcoal may bt 
considered. 
Environmental Hazards 
Do not contaminate domestic or irrigation water supplies, or 
lakes, streams, or ponds. Do not apply directly to water or 
wetlands. 
• • • 
' .. • , . 
, .. 
, . , , . 
. " .. • ' .. 
••• • ••