crop-chem-docs/corpus/epa_ppls/100-526.md

# PRINCEP 4L HERBICIDE

- EPA Reg No: **100-526**
- Registrant: SYNGENTA CROP PROTECTION, LLC
- Signal word: Caution
- Active ingredients: Simazine (41.9%)
- Label accepted: 2022-12-22
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000100-00526-20221222.pdf

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UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 WASHINGTON, DC 20460
OFFICE OF CHEMICAL SAFETY
AND POLLUTION PREVENTION

New Use PRIA Conditional v.20220527
December 22, 2022

Mark White
Sr. Stewardship & Regulatory Portfolio Manager
Syngenta Crop Protection, LLC
410 Swing Road
Greensboro, NC 27419

Subject: PRIA Label Amendment – Establishment of tolerances for crop groups (stone
fruits, pome fruits, citrus fruits, and tree nuts)
 Product Name: PRINCEP 4L HERBICIDE
 EPA Registration Number: 100-526
 Application Date: 3/15/2012
 Decision Number: 462915

Dear Mark White:

The application referred to above, submitted under the Federal Insecticide, Fungicide, and
Rodenticide Act (FIFRA), as amended, is acceptable under FIFRA section 3(c)(5).

A stamped copy of your labeling is enclosed for your records. This labeling supersedes all
previously accepted labeling. You must submit one (1) copy of the final printed labeling before
you release the product for shipment with the new labeling. In accordance with 40 CFR
152.130(c), you may distribute or sell this product under the previously approved labeling for 18
months from the date of this letter. After 18 months, you may only distribute or sell this product
if it bears this new revised labeling or subsequently approved labeling. “To distribute or sell” is
defined under FIFRA section 2(gg) and its implementing regulation at 40 CFR 152.3.

Should you wish to add/retain a reference to the company’s website on your label, then please be
aware that the website becomes labeling under FIFRA and is subject to review by the Agency. If
the website is false or misleading, the product would be misbranded and unlawful to sell or
distribute under FIFRA section 12(a)(1)(E). 40 CFR 156.10(a)(5) lists examples of statements
EPA may consider false or misleading. In addition, regardless of whether a website is referenced
on your product’s label, claims made on the website may not substantially differ from those
claims approved through the registration process. Therefore, should the Agency find or if it is
brought to our attention that a website contains false or misleading statements or claims
substantially differing from the EPA approved registration, the website will be referred to the
EPA’s Office of Enforcement and Compliance.

In its endangered species assessment as part of its review of this action, EPA made may affect
determinations for certain listed species and their designated critical habitats. EPA initiated
formal consultation with the United States Fish and Wildlife Service (FWS), which will be

Page 2 of 2
EPA Reg. No. 100-526
Decision No. 462915

ongoing during the renewed registration period. If, after formal consultation with FWS,
additional modifications are identified in the Service’s Biological Opinion, EPA will notify
Syngenta in writing within 45 calendar days of the issuance of the Biological Opinion of any
necessary required changes. Within 30 calendar days of receiving EPA’s notice, Syngenta must
submit an amendment application incorporating any required changes, including amended labels.
Alternatively, Syngenta may respond by submitting a request for voluntary cancellation of this
product. If Syngenta fails to comply with this term, Syngenta has agreed in prior written
acceptance of these terms that EPA may cancel the registration under an expedited process under
FIFRA 6(e).

Your release for shipment of the product constitutes acceptance of these conditions. If you fail to
satisfy these requirements, EPA will consider appropriate regulatory action including, among
other things, cancellation under FIFRA section 6(e).

If you have any questions, please contact Sarah Meadows at 202-566-2828 or at
meadows.sarah@epa.gov.


Sincerely,


Lindsay Roe
Chief, Herbicide Branch
Registration Division (7505T)
Office of Pesticide Programs


Enclosure

[Master Label]

Sale, use, and distribution of this product in Nassau and Suffolk Counties in the State of
New York is prohibited.

Not for use in the states of Hawaii or Alaska or in the U.S. territories (Puerto Rico, Guam,
American Samoa, the U.S. Virgin Islands, and the North Mariana Islands).

SIMAZINE GROUP 5 HERBICIDE

Princep® 4L

[ABN: Princep® 4L CR]

Herbicide

For weed control in certain crops

Active Ingredient:
Simazine: 2-chloro-4,6-bis(ethylamino)-s-triazine .................................................. 41.9%
Other Ingredients: 58.1%
Total: 100.0%

Princep 4L is a suspension concentrate that contains 4 lb active ingredient per gallon.


KEEP OUT OF REACH OF CHILDREN.

CAUTION

See additional precautionary statements and directions for use inside booklet.

EPA Reg. No. 100-526

EPA Est.


__________
Net Contents


Dec 22, 2022
100-526

–2–
FIRST AID
If on skin or
clothing
• Take off contaminated clothing.
• Rinse skin immediately with plenty of water for 15-20 minutes.
• Call a poison control center or doctor for treatment advice.
If in eyes • Hold eye open and rinse slowly and gently with water for 15 -20
minutes.
• Remove contact lenses, if present, after the first 5 minutes, then
continue rinsing eye.
• Call a poison control center or doctor for treatment advice.
If swallowed • Call a poison control center or doctor immediately for treatment
advice.
• Have person sip a glass of water if able to swallow.
• Do not induce vomiting unless told to do so by a poison control
center or doctor.
• Do not give anything by mouth to an unconscious person.
If inhaled • Move person to fresh air.
• If person is not breathing, call 911 or an ambulance, then give
artificial respiration, preferably mouth-to-mouth if possible.
• Call a poison control center or doctor for further treatment advice.
Have the product container or label with you when calling a poison control center or
doctor, or going for treatment.
HOTLINE NUMBER
For 24-Hour Medical Emergency Assistance (Human or Animal) or Chemical
Emergency Assistance (Spill, Leak, Fire, or Accident), Call
1-800-888-8372


PRECAUTIONARY STATEMENTS

Hazards to Humans and Domestic Animals

CAUTION

Harmful if absorbed through the skin. Causes moderate eye irritation. Harmful if
swallowed or inhaled. Avoid breathing vapors or spray mist. Avoid contact with skin,
eyes, or clothing.

–3–
Personal Protective Equipment (PPE)

All mixers, loaders, applicators and other handlers must wear:
• Long-sleeved shirt and long pants
• Chemical-resistant gloves made of barrier laminate, butyl rubber ≥ 14 mils, nitrile
rubber ≥ 14 mils, neoprene rubber ≥ 14 mils, polyvinyl chloride (PVC) ≥14 mils, or
Viton® ≥14 mils
• Shoes plus socks

Applications made by mechanically pressurized handguns to strawberries are restri cted
to either spot treatment only or mixer/loader/applicators must wear coveralls over long-
sleeved shirt and long pants in addition to the PPE specified above.

Mixer/loader/applicators for backpack application to grapefruit and oranges must wear
coveralls over long-sleeved shirt and long pants in addition to the PPE specified above.

Follow manufacturer’s instructions for cleaning/maintaining PPE. If no such instructions
for washables exist, use detergent and hot water. Keep and wash PPE separately from
other laundry.

Discard clothing and other absorbent materials that have been drenched or heavily
contaminated with this product’s concentrate. Do not reuse them.

Engineering Controls

When handlers use closed systems or enclosed cabs in a manner that meets the
requirements listed in the Worker Protection Standard (WPS) for agricultural pesticides
[40 CFR 170.240(d)(4-5)], the handler PPE requirements may be reduced or modified as
specified in the WPS.

User Safety Recommendations
Users should:
• Wash hands before eating, drinking, chewing gum, using tobacco, or using the
toilet.
• Remove clothing/PPE immediately if pesticide gets inside. Then wash
thoroughly and put on clean clothing.
• Remove PPE immediately after handling th is product. Wash the outside of
gloves before removing. As soon as possible, wash thoroughly and change into
clean clothing.

Environmental Hazards

Simazine can travel (seep or leach) through soil and can enter ground water which may
be used as drinking water. Simazine has been found in ground water. Users are advised
not to apply simazine to sand and loamy sand soils where the water table (ground water)
is close to the surface and where these soils are very permeable; i.e., well-drained. Your

–4–
local agricultural agencies can provide further information on the type of soil in your area
and the location of ground water.

This pesticide is toxic to aquatic invertebrates. Do not apply directly to water, to areas
where surface water is present, or to intertidal areas below the mean high water mark.
Runoff and drift from treated areas may be hazardous to aquatic organisms in neighboring
areas. Do not contaminate water when disposing of equipment wash water.

Product must not be mixed or loaded within 50 feet of intermittent streams and rivers,
natural or impounded lakes and reservoirs. Product must not be applied within 66 feet of
points where agricultural field (nurseries, Christmas tree plantings, and turf grasses for
sod farms) surface water runoff enters perennial or intermittent streams and rivers or
within 200 feet of natural or impounded lakes and reservoirs. If this product is applied to
highly erodible land, the 66 foot buffer or setback from runoff entry points must be planted
to crop, or seeded with grass or other suitable crop.

Product must not be mixed or loaded, or used within 50 feet of all wells, including
abandoned wells, drainage wells, and sink holes. Operations that involve mixing, loading,
rinsing, or washing of this product into or from pesticide handling or application equipment
or containers within 50 ft. of any well are prohibited, unless conducted on an impervious
pad constructed to withstand the weight of the heaviest load that may be positioned on
or moved across the pad. Such a pad shall be designed and maintained to contain any
product spills or equipment leaks, container or equipment rinse or wash water, and rain
water that may fall on 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 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 delivering
pesticide to the mixing/loading sites.

Additional State imposed requirements regarding well -head setbacks and operational
area containment must be observed.

One of the following restrictions must be used in applying simazine to tile- outletted
terraced fields containing standpipes:

• Do not apply within 66 feet of standpipes in tile-outletted terraced fields.
• Apply this product to the entire tile- outletted terraced field and immediately
incorporate it to a depth of 2-3 inches in the entire field.
• Apply this product to the entire tile- outletted terraced field under a no- till practice
only when a high crop residue management practice is practiced. High crop

–5–
residue management is described as a crop management practice where little or
no crop residue is removed from the field during and after crop harvest.

NON-TARGET ORGANISM ADVISORY STATEMENT

This product is toxic to plants and may adversely impact the forage and habitat of non-
target organisms, including pollinators, in areas adjacent to the treated site. Protect the
forage and habitat of non-target organisms by following label directions intended to
minimize spray drift.

–6–
CONDITIONS OF SALE AND LIMITATION OF WARRANTY AND LIABILITY

NOTICE: Read the entire Directions for Use and Conditions of Sale and Limitation of
Warranty and Liability before buying or using this product. If the terms are not
acceptable, return the product at once, unopened, and the purchase price will be
refunded.

The Directions for Use of this product must be followed carefully. It is impossible to
eliminate all risks inherently associated with the use of thi s product. Crop injury,
ineffectiveness or other unintended consequences may result because of such factors as
manner of use or application, weather or crop conditions, presence of other materials or
other influencing factors in the use of the product, which are beyond the control of
SYNGENTA CROP PROTECTION, LLC or Seller. To the extent permitted by applicable
law, Buyer and User agree to hold SYNGENTA and Seller harmless for any claims
relating to such factors.

SYNGENTA warrants that this product conforms to the chemical description on the label
and is reasonably fit for the purposes stated in the Directions for Use, subject to the
inherent risks referred to above, when used in accordance with directions under normal
use conditions. To the extent permi tted by applicable law: (1) t his warranty does not
extend to the use of the product contrary to label instructions, or under conditions not
reasonably foreseeable to or beyond the control of Seller or SYNGENTA, and, (2) Buyer
and User assume the risk of any such use. TO THE EXTENT PERMITTED BY
APPLICABLE LAW, SYNGENTA MAKES NO WARRANTIES OF MERCHANTABILITY
OR OF FITNESS FOR A PARTICULAR PURPOSE NOR ANY OTHER EXPRESS OR
IMPLIED WARRANTY EXCEPT AS WARRANTED BY THIS LABEL.

To the extent permitted by applicable law, in no event shall SYNGENTA be liable for any
incidental, consequential or special damages resulting from the use or handling of this
product. TO THE EXTENT PERMITTED BY APPLICABLE LAW, THE EXCLUSIVE
REMEDY OF THE USER OR BUYER, AND THE EXCLUSIVE LIABILITY OF
SYNGENTA AND SELLER FOR ANY AND ALL CLAIMS, LOSSES, INJURIES OR
DAMAGES (INCLUDING CLAIMS BASED ON BREACH OF WARRANTY,
CONTRACT, NEGLIGENCE, TORT, STRICT LIABILITY OR OTHERWISE)
RESULTING FROM THE USE OR HANDLING OF THIS PRODUCT, SHALL BE THE
RETURN OF THE PURCHASE PRICE OF THE PRODUCT OR, AT THE ELECTION OF
SYNGENTA OR SELLER, THE REPLACEMENT OF THE PRODUCT.

SYNGENTA and Seller offer this product, and Buyer and User accept it, subject to the
foregoing Conditions of Sale and Limitation of Warr anty and Liability, which may not be
modified except by written agreement signed by a duly authorized representative of
SYNGENTA.

–7–
DIRECTIONS FOR USE

It is a violation of Federal law to use this product in a manner inconsistent with its labeling.

Do not apply this product in a way that will contact workers or other persons, either directly
or through drift. Only protected handlers may be in the area during application. For any
requirements specific to your State or Tribe, consult the agency responsible for pesticide
regulation.

ANY USE OF THIS PRODUCT IN AN AREA WHERE USE IS PROHIBITED IS A
VIOLATION OF FEDERAL LAW. Before using this product, you must consult the
Simazine Watershed Information Center (SWIC) to determine whether the use of this
product is prohibited in your watershed. SWIC can be accessed through
www.simazine-
watershed.info or 1 -888-365-2874. If the SWIC indicates that use of this product is
prohibited in your watershed, you may return this product to your point of purchase or
contact Syngenta Crop Protection, LLC for a refund.

Endangered Species
It is a Federal offense to use any pesticide in a manner that results in an unauthorized
“take” (e.g., kill or otherwise harm) of an endangered species under the Endangered
Species Act section 9. When using this product, you must follow the measures contained
in the Endangered Species Protection Bulletin for the area in which you are applying the
product. You must obtain a Bulletin no earlier than six months before using this product.
To obtain Bulletins, consult http://www.epa.gov/espp/, call 1- 844-447-3813, or email
ESPP@epa.gov. You must use the Bulletin valid for the month in which you will apply the
product.

AGRICULTURAL USE REQUIREMENTS

Use this product only in accordance with its labeling and with the Worker Protection
Standard, 40 CFR part 170. This Standard contains requirements for the protection of
agricultural workers on farms, forests, nurseries, and greenhouses, and handlers of
agricultural pesticides. It contains requirements for training, decontamination,
notification, and emergency assistance. It also contains sp ecific instructions and
exceptions pertaining to the statements on this label about personal protective
equipment (PPE) and restricted-entry interval. The requirements in this box only apply
to uses of this product that are covered by the Worker Protection Standard.

For Christmas trees, do not enter or allow worker entry into treated areas during
the restricted -
entry interval (REI) of 48 hours. For all other crops and use
patterns, do not enter or allow worker entry into treated areas during the
restricted-entry interval (REI) of 12 hours. Exception: If the product is soil -injected
or soil -incorporated, the Worker Protection Standard, under certain circumstances,
allows workers to enter the treated area if there will be no contact with anything that has
been treated.

–8–
PPE required for early entry to treated areas that is permitted under the Worker
Protection Standard and that involves contact with anything that has been treated, such
as plants, soil, or water is:

• Coveralls
• Chemical-resistant gloves made of any waterproof material
• Shoes plus socks


NON-AGRICULTURAL USE REQUIREMENTS
The requirements in this box apply to uses of this product that are NOT within the scope
of the Worker Protection Standard for a gricultural pesticides (40 CFR part 170). The
WPS applies when this product is used to produce agricultural plants on farms, forests,
nurseries, or greenhouses.

Do not enter or allow others (including children or pets) to enter treated areas until sprays
have dried.

FAILURE TO FOLLOW THE DIRECT IONS FOR USE AND PRECAUTIONS ON THIS
LABEL MAY RESULT IN CROP INJURY, POOR WEED CONTROL, AND/OR ILLEGAL
RESIDUES.

USE RESTICTIONS

Sale, use, and distribution of this product in Nassau and Suffolk Counties in the State of
New York is prohibited.

Not for use in the states of Hawaii or Alaska or in the U.S. territories (Puerto Rico, Guam,
American Samoa, the U.S. Virgin Islands, and the North Mariana Islands).

Do not apply this product through any type of irrigation system except for micro-sprinkler
application for citrus in California.

For use on warm season turf grass only (e.g., Bermudagrass, Centipedegrass, St.
Augustinegrass, and Zoysiagrass).

All shelterbelt and forestry uses, except “Christmas Tree Plantings”, are prohibited.

This product is not for use in formulating end-use products for aquatic use.

Applications made by mechanically pressurized handguns are restricted to spot treatment
only for the following uses
o Citrus (Grapefruit, Oranges, Lemons)
o Pome Fruits (Apples, Pears)
o Stone Fruits (Cherries [sweet and tart], peaches, Plums, Nectarines)
o Tree Nuts (Pecans, Walnuts, Filberts, Almonds, Macadamia Nuts)

–9–
o Berry and Small Fruit (Blueberries, Blackberries, Loganberries, Raspberries,
Grapes, Lowbush Blueberries, Cranberries)
o Tropical and Sub-tropical Fruits (Avocado, Olive)
o Nursery/Ornamentals
o Sweet Corn

Applications made by mechanically pressurized handguns to strawberries are restricted
to either spot treatment only or mixer/loader/applicators must wear coveralls over long-
sleeved shirt and long pants, shoes plus socks, and gloves made of barrier laminate,
butyl rubber ≥ 14 mils, nitrile rubber ≥ 14 mils, neoprene rubber ≥ 14 mils, polyvinyl
chloride (PVC) ≥14 mils, or Vitron® ≥14 mils.

PRODUCT INFORMATION

Aerial application is prohibited.

When tank mixing or sequentially applying simazine or products containing simazine, the
total pounds of simazine applied must not exceed the specific maximum rate per calendar
year as noted in the use directions.

Apply Princep 4L herbicide before weeds em erge or after removal of weed growth.
Princep 4L controls a wide variety of annual broadleaf and grass weeds when used at
selective rates in agricultural crops.

Where a range of application rates is given, use the low rate on coarse-textured soil and
soil lower in organic matter; use the high rate on fine- textured soil and soil higher in
organic matter.

Since Princep 4L enters weeds mainly through their roots, moisture is needed to move it
into the root zone. Very dry soil conditions following application may necessitate shallow
cultivation or rotary hoeing.

Princep 4L is nonflammable.

–10–

WEED RESISTANCE MANAGEMENT

SIMAZINE GROUP 5 HERBICIDE

Simazine, the active ingredient in this product, is a Group 5 herbicide based on the
mode of action classification system of the Weed Science Society of America. Any
weed population may contain plants naturally resistant to Group 5 herbicides. Such
resistant weed plants may not be effectively managed using Group 5 herbicides but
may be effectively managed utilizing another herbicide alone or in mixtures from a
different group and/or by using cultural or mechanical practices. However, an herbicide
mode of action classification by itself may not adequately address specific weeds that
are resistant to specific herbicides. Consult your local company representative, state
cooperative extension service, professional consultants or other qualified authorities to
determine appropriate actions for treating specific resistant weeds.

Scout and know your field
• Know weed species present in the field to be treated through scouting and field
history. An understanding of weed biology is useful in designing a resistance
management strategy. Ensure the weed management program will control all
weeds present.
• Fields should be scouted prior to application to determine species present and
growth stage. Always apply this herbicide at the full labeled rate and correct
timing for the weeds present in the field.
Utilize non-herbicidal practices to add diversity
• Use diversified management tactics such as cover crops, mechanical weed
control, harvest weed seed control, and crop rotation as appropriate.
Use good agronomic practices, start clean and stay clean
• Use good agronomic practices that enhance crop competitiveness.
• Plant into weed-free fields utilizing tillage or an effective burndown herbicide for
control of emerged weeds.
• Sanitize farm equipment to avoid spreading seed or vegetative propagules prior
to leaving fields.
Difficult to control weeds
• Fields with difficult to control weeds should be planted in rotation with crops that
allow the use of herbicides with an alternative mode of action or different
management practices.
• Difficult to control weeds may require sequential applications, such as a broad
spectrum preemergence herbicide followed by one or more postemergence
herbicide applications. Utilize herbicides containing different modes of action
effective on the target weeds in sequential applications.

–11–
Do not overuse the technology
• Do not use more than two applications of this or any other herbicide with the
same mode of action in a single growing season unless mixed with an herbicide
with a different mode of action which provides overlapping spectrum for the
difficult to control weeds.
Scout and inspect fields following application
• Prevent an influx of weeds into the field by controlling weeds in field borders.
• Scout fields after application to verify that the treatment was effective.

• Suspected- herbicide resistant weeds may be identified by these indicators
• Failure to control a weed species normally controlled by the herbicide at
the dose applied, especially if control is achieved on adjacent weeds;
• A spreading patch of non-controlled plants of a particular weed species;
and
• Surviving plants mixed with controlled individuals of the same species.
• Report non-performance of this product to your Syngenta retailer, Syngenta
representative, or call 1-866-Syngent(a) (866-796-4368). If resistance is
suspected ensure weed escapes are controlled using an herbicide with an
effective mode of action and/or use non-chemical means to prevent further seed
production.
Prevent weed escapes before, during, and after harvest
• Do not allow weed escapes to produce seed or vegetative structures such as
tubers or stolons which contribute to spread and survival. Consider harvest
weed seed management and control weeds post-harvest to prevent seed
production.
Resistant Weeds
Contact your local Syngenta representative, retailer, crop advisor or extension agent to
determine if weeds resistant to this mode of action are present in your area. If resistant
biotypes have been reported, use the full labeled rate of this product, apply at the labeled
timing, and tank-mix with a different mode of action product so there are multiple effective
modes of application for each suspected resistant weed.

–12–
PERENNIAL CROP REPLANTING

If replanting perennial crops, do not apply Princep 4L in the year preceding planting these
crops, unless otherwise stated on this label, or crop injury may occur.

APPLICATION PROCEDURES

Ground boom applications: Use conventional ground sprayers equipped with nozzles
that provide accurate and uniform applicati on. Be certain that nozzles are uniformly
spaced and are the same size. Calibrate sprayer before use and recalibrate at the start
of each season and when changing carriers. Unless otherwise specified, use a minimum
of 20 gal of spray mixture per acre.

Use a pump with capacity to: (1) maintain 35- 40 psi at nozzles, (2) provide sufficient
agitation in tank to keep mixture in suspension, and (3) to provide a minimum of 20%
bypass at all times. Use centrifugal pumps which prov ide propeller shear action for
dispersing and mixing this product. The pump should provide a minimum of 10
gal/minute/100 gal. tank size circulated through a correctly positioned sparger tube or
jets.

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 recirculation line. Use 50- mesh or coarser screens between the pump and boom,
and where required, at the nozzles. Check nozzle manufacturer’s recommendations.

For band applications, calculate amount to be applied per acre as follows:

band width in
inches X
broadcast rate
=
amount needed
row width in inches per acre per acre of field

MANDATORY SPRAY DRIFT MANAGEMENT

Ground Boom Applications:
• User must only apply with the release height recommended by the manufacturer,
but no more than 4 feet above the ground or crop canopy.
• Applicators are required to use a coarse or coarser droplet size (ASABE S572)
• Do not apply when wind speeds exceed 10 miles per hour at the application site.
• Do not apply during temperature inversions.
• User must maintain a 15 foot (4.6 meter) in-field downwind buffer (in the direction
in which the wind is blowing) from the edge of streams and rivers, as well as high-
tide line for all estuarine/marine environments

–13–
SPRAY DRIFT ADVISORIES
THE APPLICATOR IS RESPONSIBLE FOR AVOIDING OFF-SITE SPRAY DRIFT. BE
AWARE OF NEARBY NON-TARGET SITES AND ENVIRONMENTAL CONDITIONS.

IMPORTANCE OF DROPLET SIZE
An effective way to reduce spray drift is to apply large droplets. Use the largest droplets
that provide target pest control. While applying larger droplets will reduce spray drift, the
potential for drift will be greater if applications are made improperly or under unfavorable
environmental conditions.

Controlling Droplet Size – Ground Boom
• Volume – Increasing the spray volume so that larger droplets are produced will
reduce spray drift. Use the highest practical spray volume for the application. If a
greater spray volume is needed, consider using a nozzle with a higher flow rate.
• Pressure – Use the lowest spray pressure recommended for the nozzle to produce
the target spray volume and droplet size.
• Spray nozzle – Use a spray nozzle that is design ed for the intended application.
Consider using nozzles designed to reduce spray drift.

BOOM HEIGHT – Ground Boom
For ground equipment, the boom should remain level with the crop and have minimal
bounce.

SHIELDED SPRAYERS
Shielding the boom or individual nozzles can reduce spray drift. Consider using shielded
sprayers. Verify that the shields are not interfering with the uniform deposition of the
spray on the target area.

TEMPERATURE AND HUMIDITY
When making applications in hot and dry conditions, use larger droplets to reduce effects
of evaporation.

TEMPERATURE INVERSIONS
Drift potential is high during a temperature inversion. Temperature inversions are
characterized by increasing temperature with altitude and are common on nights with
limited cloud cover and light to no wind. The presence of an inversion can be indicated
by ground fog or by the movement of smoke from a ground source or an aircraft smoke
generator. Smoke that layers and moves laterally in a concentrated cloud (under low
wind conditions) indicates an inversion, while smoke that moves upward and rapidly
dissipates indicates good vertical air mixing.

WIND
Drift potential generally increases with wind speed. AVOID APPLICATIONS DURING
GUSTY WIND CONDITIONS. Applicators need t o be familiar with local wind patterns
and terrain that could affect spray drift.

–14–
Handheld Technology Applications
Take precautions to minimize spray drift.

APPLICATION THROUGH MICRO-SPRINKLER IRRIGATION SYSTEMS (FOR
USE ON CITRUS ONLY IN CALIFORNIA)


Princep 4L may be applied only through micro-sprinkler irrigation systems. Do not
apply this product through any other type of irrigation system. Crop injury, lack of
effectiveness, or illegal pesticide residues in the crop can result from non-uniform
distribution of treated water. If you have questions about calibration, you should
contact State Extension Service specialists, equipment manufacturers, or other
experts. Do not connect any irrigation system used for pesticide application to a
public water system, unless the pesticide label-prescribed safety devices for public
water systems are in place. A person knowledgeable of the irrigation system and
responsible for its operation, or under the supervision of the responsible person, shall
shut the system down and make necessary adjustments should the need arise.

Irrigation System Operating Instructions

1. The system must contain a functional check-valve, vacuum relief valve, and
low pressure drain appropriately located on the irrigation pipeline to prevent
water- source contamination from backflow.
2. The pesticide injection pipeline must contain a functional, automatic, quick-
closing check-valve to prevent the flow of fluid back toward the injection
pump.
3. The pesticide injection pipeline must also contain a functional, normally
closed, solenoid-operated valve located on the intake side of the injection
pump and connected to the system interlock to prevent fluid from being
withdrawn from the supply tank when the irrigation system is either
automatically or manually shut down.
4. The system must contain functional interlocking controls to automatically shut
off the pesticide injection pump when the water pump motor stops.
5. The irrigation line or water pump must include a functional pressure switch
which will stop the water pump motor when the water pressure decreases to
the point where pesticide distribution is adversely affected.
6. Systems must use a metering device, such as a positive displacement
injection pump (e.g., diaphragm pump) effectively designed and constructed
of materials that are compatible with pesticides and capable of being fitted
with a system interlock.
7. Do not apply when wind speed favors drift beyond the area intended.

Micro-Sprinkler Application Instructions

Princep 4L must be applied on the schedule specified in the specific crop use
recommendations on the product label and not according to the irrigation schedule.

–15–
Princep 4L has not been sufficiently tested when applied through micro-sprinkler
irrigation systems to assure consistent product performance for all labeled uses. The
following calibration and application techniques are provided for user reference, but do
not constitute a warranty of fitness for application through sprinkler or drip irrigation
equipment. Users must check with state and local regulatory agencies for potential
use restrictions before applying any agricultural chemical through micro-sprinkler
irrigation equipment.

General Instructions

1. Each run of the irrigation system must be calibrated separately to determine
the time it takes water to move through the system and to make sure all
emitters in the system are putting out the same amount of water.
2. Only pressure injection or venturi equipment is recommended.
3. Determine the area to be treated in each irrigation run.
4. Measure the output of each of the emitters closest to and farthest from
the injector site.
5. For calibration, substitute a concentrated detergent (such as Wisk) or a
soluble fertilizer for the Princep 4L in the injector tank. The detergent will
bubble as it leaves the emitters. The time period over which bubbles occur
should be checked for both the closest and farthest emitters. If these times
are not within 2 minutes of each other, adjust the dilution ratio and/or the
injection rate.
6. If a soluble fertilizer is used, measure the time intervals with a salt bridge.

Step-by-Step Instructions

1. Before starting to calibrate, operate the system until all the emitters are
putting out at equal flow rates or until the system is operating at full
pressure.
2. Make up an indicator solution of detergent or fertilizer, using the same ratio to
be used when mixing Princep 4L.
3. Set the injector to apply the indicator solution at the injection rate to be used
in the actual Princep 4L application.
4. Attach a 5-inch length of flexible tubing over the emitter closest to the
injection point, another length over the emitter farthest away. Both emitters
should be monitored to determine the time intervals that the indicator
solutions are observed.
5. Begin injecting the indicator solution. Direct the flow from the tubes at the
emitters into a small container. Begin timing when the indicator solution is
first detected, stop timing when the indicator solutions are no longer
detected.
6. If the period of detection of the indicator solution between the 2 emitters are
within 2 minutes of each other, comparable coverage will be obtained. If they
are not, make adjustments by increasing the dilution ratio, using more water
per part of Princep 4L, or adjust the injector to a slower flow rate.

–16–
7. Once the system is calibrated, dilute the needed amount of Princep 4L with
water in the mix tank using a minimum of 15 parts water to 1 part Princep 4L
in the solution tank.
8. Do not begin to inject Princep 4L into the system until all emitters are
producing equal flow rates, or until the system is at full pressure.
9. Inject the Princep 4L into the system at the beginning of the irrigation set in
½-1 inch of irrigation water. Do not apply in excess of 1 inch of water.


MIXING PROCEDURES

All Uses: (1) Be sure sprayer is clean and not contaminated with any other materials, or
crop injury or sprayer clogging may result. (2) Fill tank ¼ full with clean water, nitrogen
solution, or complete fluid 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) If any dry herbicides are being tank mixed, add them to the tank and allow them to
become thoroughly suspended. (6) Then pour Princep 4L directly from jug into tank. (7)
Continue filling tank until 90% full. Increase agitation if necessary to maintain surface
action. (8) Add other liquid tank mix herbicide(s) after this product is thoroughly
suspended. (9) Finish filling tank. Maintain agitation to avoid separation of materials. (10)
Empty tank as completely as possible before refilling to prevent buildup of emulsifiable
concentrate residue from possible tank mix herbicides. (11) If an emulsifiable concentrate
film starts to build up in tank, drain it and clean with strong detergent solution or solvent.
(12) Clean sprayer thoroughly immediately after use by flushing system with water
containing a detergent.

Compatibility test: To determine the tank mix compatibility of Princep 4L with l iquid
fertilizer, crop oil, spreaders, or other recommended pesticides, use this test method.
Nitrogen solutions or complete fluid fertilizers may replace all or part of the water in the
spray in corn. Since liquid fertilizers can vary, even within the s ame analysis, check
compatibility each time before use. Be especially careful when using complete
suspension or fluid fertilizers, as serious compatibility problems are more apt to occur.
Commercial application equipment may improve compatibility in some instances. Check
compatibility using this procedure:

1. Add 1 pt of fertilizer to each of 2 one-qt glass jars with tight lids.

2. To one of the jars, add ¼ tsp. of a compatibility agent approved for this use (¼ tsp.
is equivalent to 2 pt/100 gal spray). Cap and shake until mixed. Examples of
compatibility agents include Compex® and Unite®.

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 concentrates last. After each addition, cap and shake until thoroughly
mixed. The appropriate amount of herbicides for this test follows (assuming a
spray volume of 25 gal/A):

–17–

 Dry herbicides: For each pound per acre, add 1.5 teaspoons to each
jar. Fluff up wettable powder products before
measuring.

 Liquid herbicides: For each pint per acre, add 0.5 teaspoon to each jar.

For a spray volume other than 25 gal /A, change the teaspoons added to each jar
as follows:

25 gal X no. teaspoons given above = teaspoons to add
desired gal spray volume per acre to each jar

4. After adding all ingredients, put lids on and tighten. Shake jars vigorously one
minute. Let the mixtures stand 15 minutes and then look for separation, large
flakes, precipitates, grease, gels, medium to 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 2 jars. If either mixture separates, but can be remixed
readily, the mixture can probably be sprayed as long as good agitation is used. If
the mixtures ar e incompatible, test the following methods of improving
compatibility: (A) slurry the dry herbicide(s) in water before addition, or (B) add ½
of the compatibility agent to the fertilizer and the other ½ to the emulsifiable
concentrate or flowable herbicid e before addition to the mixture. If still
incompatible, do not use the materials mixed in the same spray tank.

WEEDS CONTROLLED


Princep 4L applied as directed in this label will control or partially control the weeds
listed in Table 1. Optimal weed control can be obtained if Princep 4L is applied
according to all label use directions.

Princep 4L will not control emerged weeds so applications must be made to a weed-
free soil surface or in tank mixture with products that provide postemergence control
of weeds present at the time of application.

Dry weather following application of Princep 4L may reduce residual weed control
effectiveness.

Refer to the crop sections on this label for specific rates and use directions.

Table 1. Annual Weeds Controlled

ANNUAL GRASSES BROADLEAF WEEDS
Barnyardgrass Alyssum Mustard, wild
Bluegrass, annual Burclover Nightshade species,
annual

–18–
Brome, downy (cheatgrass) Carelessweed Paintbrush, Flora's
Crabgrass species Carpetweed Pepperweed
Fescue, rattail Chickweed, common Pepperweed, yellow flower
Foxtail species Fiddleneck Pigweed species
Goosegrass Filaree Pineappleweed
Hairgrass, silver Fireweed Purslane, common
Junglerice Fivehook, bassia Pusley, Florida
Oats, wild Groundsel Ragweed, species
Fall panicum Henbit Redmaids
Ryegrass, annual Knawel (German moss) Shepherdspurse
Signalgrass species Lambsquarters, common Smartweed species,
annual
Witchgrass Lettuce, prickly Spanishneedles
 Morningglory, species,
annual
Speedwell
 Mustard, tansy Thistle, Russian


CROP USE DIRECTIONS

AVOCADO

Apply Princep 4L to the grove floor avoiding contact with fruit, foliage, stems or trunk.
Refer to Table 1 for a list of weeds controlled or partially controlled. Refer to Table 2 for
a list of potential tank mixtures.

Crop
Rate1
(qt/A)
Application
Timing Restrictions
Avocado 2 - 4 Following final
grove
preparation

(See
“Precautions” for
grove
establishment
interval before
application)

• Apply to avocados in California and
Florida only.
• Do not apply more than 4 qt/A (4 lb
ai/A) per calendar year.
• Do not make more than one application
per calendar year.
• Applications made by mechanically
pressurized handguns are restricted to
spot treatment only.
1Rates are based on a broadcast treatment acre. For band applications, reduce the broadcast rate of
Princep 4L and water per acre in proportion to area actually sprayed.

Precautions to reduce avocado crop injury risk:
1. Apply only to groves that have been established for 12 months or more.
2. Avoid use on sand, sandy loam, or loamy sand soil.

–19–
3. Immediately following application, limit irrigation to ½ inch.

BLUEBERRIES AND CANEBERRIES

Apply Princep 4L to the orchard floor avoiding contact with fruit, foliage, stems or trunk.
Refer to Table 1 for a list of weeds controlled or partially controlled. Refer to Table 2 for
a list of potential tank mixtures.

Crop Rate1
(qt/A)
Application
Timing
Remarks
Blueberries
Blackberries
Boysenberries
Loganberries
Raspberries
2 - 4 • Spring
• Spring and
Fall

(See
“Precautions”
for orchard
establishment
interval
before
application)
• To control quackgrass, apply 4 qt/A (4
lb ai/A) in the fall or split the application
by applying 2 qt/A in the fall followed by
2 qt/A in the spring, when quackgrass
is actively growing.
Restrictions
• Do not apply more than 4 qt/A (4 lb
ai/A) per calendar year.
• Apply in a minimum for 40 gallons of
water per acre.
• Do not make more than two
applications per calendar year.
• Allow a minimum of 90 days between
applications.
• Do not apply when fruit is present.
• Applications made by mechanically
pressurized handguns are restricted to
spot treatment only.

1Rates are based on a broadcast treatment acre. For band applications, reduce the broadcast
 rate of Princep 4L and water per acre in proportion to the area actually sprayed.

Precautions to reduce crop injury risk:
1. On plantings less than 6 months old, use ½ the specified rate.
2. Avoid use on sand, sandy loam, or loamy sand soils.
3. Immediately following application, limit irrigation to ½ inch.

CITRUS FRUIT

Apply Princep 4L to the orchard floor avoiding contact with fruit, foliage, stems or trunk.
Refer to Table 1 for a list of weeds controlled or partially controlled. Refer to Table 2 for
a list of potential tank mixtures.

For Use In Crop
Rate1
(qt/A)
Application
Timing Restrictions

–20–
Arizona only

Orange
Grapefruit
Lemon
Lime
Tangerine
Kumquat
Mandarin
Pummelo
Satsuma
Cultivars,
varieties,
and/or
hybrids of
these
2 • Spring
• Fall
• Spring
and Fall

(See
“Precautions
” for orchard
establishme
nt before
application)
• Do not apply more than 4 qt/A
(4 lb ai/A) per calendar year.
• Do not apply more than 2 qt/A
(2 lb ai/A) per application.
• Do not make more than two
applications per calendar year.
• Allow a minimum of 40 days
between applications.
• Do not harvest crop for 1 day
following application.
• Do not use in nurseries or apply
to bedded lemons or oranges.
• Applications made by
mechanically pressurized
handguns are restricted to spot
treatment only
California and
Texas only

Orange
Grapefruit
Lemon
Lime
Tangerine
Calamondin
Citron
Citrus
hybrids
Kumquat
Mandarin
Pummelo
Tangelo
Tangor
Cultivars,
varieties,
and/or
hybrids of
these
2 - 4 • Spring
• Fall
• Spring
and Fall

(See
“Precautions
” for orchard
establishme
nt before
application)
• Do not apply more than 4 qt/A
(4 lb ai/A) per calendar year.
• Do not make more than two
applications per calendar year.
• Allow a minimum of 40 days
between applications.
• Do not harvest crop for 1 day
following application.
• Do not use in nurseries or apply
to bedded grapefruit, lemons or
oranges.
• Do not use in the Imperial,
Coachella, or Palo Verde
Valleys or crop injury may occur.
• Applications made by
mechanically pressurized
handguns are restricted to spot
treatment only
Florida2 only

Orange
Grapefruit
Lemon
Lime
Tangerine
Calamondin
Citron
Citrus
hybrids
Kumquat
Mandarin
4 • Spring
• Fall
• Spring and
Fall
• Do not apply more than 8 qt/A (8
lb ai/A) per calendar year.
• Do not apply more than 4 qt/A(4
lb ai/A) per application.
• Do not make more than two
applications per calendar year.
• Allow a minimum of 40 days
between applications.
• Do not harvest crop for 1 day
following application.
• Do not use in nurseries.

–21–
Pummelo
Satsuma
Tangelo

Tangor
Cultivars,
varieties,
and/or
hybrids of
these
• Applications made by
mechanically pressurized
handguns are restricted to spot
treatment only
1 Rates are based on a broadcast treatment acre. For band applications, reduce the broadcast
 rate of Princep 4L and water per acre in proportion to the area actually sprayed.
2 For additional weed control; refer to the Difficult to Control Weeds section below.

Precautions to reduce citrus crop injury risk in all states:
1. Dark-red grapefruit hybrids, e.g. “Star Ruby”, have a higher risk of crop injury
than non-dark red types.

Restrictions to reduce citrus crop injury risk in all states:
1. Do not exceed 4 qt/A/year of Princep 4L (4 lb ai/A) on grove planted trees 1 year
old or less or crop injury may occur.
2. Do not apply to bedded citrus (except for FL grapefruit and oranges).
3. Do not apply to trees under stress from freeze damage for one year after the
freeze.


Difficult to Control Weeds
For control of difficult species, such as balsamapple vine and spanishneedles, and
partial control of honeyvine milkweed, apply no more than 8.0 qt/A of Princep 4L
(8.0 lb ai/A) per treated acre as a single application in the spring using a 50%
band application. The amount of Princep 4L applied per acre of field must not exceed
4 quarts (4 lb ai/A). Apply in the spring growing season between January and April. Do
not make a fall application if this treatment was used in the spring.

GRAPES

Apply Princep 4L to the vineyard floor avoiding contact with fruit, foliage, stems or trunk.
Refer to Table 1 for a list of weeds controlled or partially controlled. Refer to Table 2 for
a list of potential tank mixtures.

Crop
Rate1
(qt/A)
Application
Timing Restrictions
Grapes 2 - 4 After harvest
through early
spring

• Do not apply more than 4 qt/A (4 lb ai/A)
per calendar year.
• Do not make more than one application
per calendar year.

–22–
(See
“Precautions”
for vineyard
establishment
interval before
application)
• Applications made by mechanically
pressurized handguns are restricted to
spot treatments only.
1Rates are based on a broadcast treatment acre. For band applications, reduce the broadcast
 rate of Princep 4L and water per acre in proportion to the area actually sprayed.

Precautions to reduce crop injury risk:
1. Apply only to vines where trees have been established 36 months or more or crop
injury may occur.
2. Avoid use on sand, sandy loam, or loamy sand soils.
3. Immediately following application, limit irrigation to ½ inch.

OLIVES

Apply Princep 4L to the orchard floor avoiding contact with fruit, foliage, stems or trunk.
Refer to Table 1 for a list of weeds controlled or partially controlled. Refer to Table 2 for
a list of potential tank mixtures.

Crop
Rate1
(qt/A)
Application
Timing Restrictions
Olives 2 - 4 Following grove
preparation in
the fall

(See
“Precautions”
for orchard
establishment
interval before
application)
• Do not apply more than 4 qt/A (4 lb ai/A)
per calendar year.
• Do not apply more than one application
per calendar year.
• Applications made by mechanically
pressurized handguns are restricted to
spot treatment only.
1 Rates are based on a broadcast treatment acre. For band applications, reduce the broadcast
 rate of Princep 4L and water per acre in proportion to the area actually sprayed.

Precautions to reduce olive crop injury risk:
1. Apply only to orchards where trees have been established 12 months or more.
2. Avoid use on sand, sandy loam, or loamy sand soils.
3. Immediately following application, limit irrigation to ½ inch.

POME FRUIT

Apply Princep 4L to the orchard floor avoiding contact with fruit, foliage, stems or trunk.
Refer to Table 1 for a list of weeds controlled or partially controlled. Refer to Table 2 for
a list of potential tank mixtures.

–23–


Crop Rate1
(qt/A)
Applicatio
n Timing Restrictions
Apple
Pear
Azarole
Chinese quince
Japanese
quince
Loquat
Mayhaw
Medlar
Quince
Tejocote
Cultivars
varieties and/or
hybrids of these
2 - 4 Spring or
Fall

(See
“Precaution
s” for
orchard
establishme
nt interval
before
application)
• Do not apply more than 4 qt/A (4 lb ai/A)
per calendar year.
• Do not make more than one application per
calendar year.
• Do not harvest crop for 21 days following
application.
• Applications made by mechanically
pressurized handguns are restricted to spot
treatment only.
• The PHI for apples is 150 days
1 Rates are based on a broadcast treatment acre. For band applications, reduce the broadcast
 rate of Princep 4L and water per acre in proportion to the area actually sprayed.

Precautions to reduce apple and pear crop injury risk:
1. Apply only to orchards where trees have been established 12 months or more.
2. Avoid use on sand, sandy loam, or loamy sand soils.
3. Immediately following application, limit irrigation to ½ inch.

STONE FRUIT

Apply Princep 4L to the orchard floor avoiding contact with fruit, foliage, stems or trunk.
Refer to Table 1 for a list of weeds controlled or partially controlled. Refer to Table 2 for
a list of potential tank mixtures.

Crop Rate1
(qt/A)
Application
Timing
Restrictions
Cherry,
Sweet
Cherry, Tart
Peach
Apricot
Nectarine2
Plum
Plumcot
Prune (fresh)
2 - 4 Spring or
Fall
• Do not apply more than 4 qt/A (4 lb ai/A)
per calendar year.
• Do not apply more than one application per
calendar year.
• Do not apply more than 2 qt/A (2 lb ai/A)
per calendar year to nectarines.
• Do not apply more than 2 qt/A (2 lb ai/A)
per calendar year to peaches grown in
California.
• Do not harvest crop for 21 days following
application.

–24–
• Do not apply to plums, apricots, plumcots
or prunes (fresh) in California.
• Use on sweet cherry and plum is restricted
to states east of the Mississippi River and
the state of Missouri.
• Applications made by mechanically
pressurized handguns are restricted to spot
treatment only.
1Rates are based on a broadcast treatment acre. For band applications, reduce the broadcast
 rate of Princep 4L and water per acre in proportion to the area actually sprayed.
2Use restricted to California, must be applied in a 2–4 foot band on each side of tree row.

Precautions to reduce crop injury risk:
1. Apply only to orchards where trees have been established 24 months or more.
2. Avoid use on sand, sandy loam, or loamy sand soils with less than 1% organic
matter.
3. Immediately following application, limit irrigation to ½ inch.
4. Do not plant nectarines or peaches into treated soil for 12 months after application.

STRAWBERRY (OR and WA Only)

Apply Princep 4L to control or suppress the weeds listed in Table 1. Refer to Table 2
for a list of potential tank mixtures.

Crop Rate
(qt/A)
Application
Timing
Restrictions
Strawberry 1 • Fall after
harvest1
• Spring during
crop
dormancy
• Do not apply more than 1 qt/A (1 lb
ai/A) per calendar year.
• Do not make more than one application
per calendar year.
• Do not apply within 4 months after
transplanting.
• . Applications made by mechanically
pressurized handguns are restricted to
either spot treatment only or
mixer/loader/applicators are required to
wear coveralls over long sleeve shirts
and long pants of clothing.
1In fields where overhead irrigation is used to activate this product, apply after harvest at time
 of bed renovation. In fields where overhead irrigation is not available, apply during early
 October through November.

Precautions to reduce strawberry crop injury risk:
1. Avoid use on sand, sandy loam, or loamy sand soils.

–25–
TREE NUTS

Apply Princep 4L to the orchard floor avoiding contact with fruit, foliage, stems or trunk.
Refer to Table 1 for a list of weeds controlled or partially controlled. Refer to Table 2 for
a list of potential tank mixtures.

Crop Rate1
(qt/A)
Application
Timing
Restrictions
Almond
Pecan
Walnut
1 – 2 Spring or
Fall

(See
“Precautions
” for orchard
establishme
nt interval
before
application)
• Do not apply more than 2 qt/A (2 lb ai/A)
per calendar year.
• Do not make more than one application
per calendar year.
• Do not treat the Mission variety of
almonds.
• Do not apply to almond trees propagated
on plum rootstocks.
• Do not use on pecans west of Pecos
River in TX or in AZ, CA, or NM.
• Do not harvest crop for 30 days following
application.
• Applications made by mechanically
pressurized handguns are restricted to
spot treatment only.
1Rates are based on a broadcast treatment acre. For band applications, reduce the broadcast
 rate of Princep 4L and water per acre in proportion to the area actually sprayed.

Precautions to reduce almond crop injury risk:
1. Apply only to trees established in the grove for 24 months or more.
2. Avoid use on sand, sandy loam, or loamy sand soils with less than 1% organic
matter.
3. Immediately following application, limit irrigation to ½ inch.
4. Do not replant almonds into treated soil for 12 months following application.

Crop1 Rate2
(qt/A)
Application
Timing
Restrictions
Beech Nut
Brazil Nut
Butternut
Cashew
Chestnut
Chinquapin
Filbert/Hazelnut
Hickory Nut
Macadamia Nut
2 – 4 • Spring
• Fall
• Spring and
Fall

(See
“Precautions” for
orchard
establishment
interval before
application)
• Do not apply more than 4 qt/A (4
lb ai/A) per calendar year.
• Do not make more than two
applications per calendar year.
• Allow a minimum of 120 days
between applications.
• Do not harvest crop for 30 days
following application.
• Do not use on Beech nut, Brazil
Nut, Butternut, Cashew,
Chestnut, Chinquapin, or

–26–
Hickory Nut in the state of
California.
• Applications made by
mechanically pressurized
handguns are restricted to spot
treatment only.
1Do not apply when nuts are on the ground during harvest period.
2Rates are based on a broadcast treatment acre. For band applications, reduce the broadcast
 rate of Princep 4L and water per acre in proportion to the area actually sprayed.


Precautions to reduce filbert, macadamia nut, pecan and walnut crop injury risk:
1. Apply only to orchards where trees have been established 36 months or more.
2. Avoid use on sand, sandy loam or loamy sand soils.
Immediately following application, limit overhead sprinkler irrigation to ½ inch.

TANK MIXTURES FOR PERENNIAL FRUIT AND NUT CROPS

Princep 4L may be tank mixed with other registered herbicides for improved spectrum of
weed control in many crops. Additionally, these tank mixtures can be used to include a
different mode of action herbicide to help control or manage the development of
resistant weed biotypes.

Refer to the specific crop sections of this label for details on application timing, use rate,
precautions, restrictions and other use information.

Not all of the tank mixture partners listed below are registered for use on all crops listed
on this label so read and follow all label directions of the mixture partner.

Table 2. Princep 4L Tank Mixtures for Weed Control in Perennial Crops

Tank Mix Partner1 Directions
Gramoxone® brands that
are registered for use on
crops listed on this label
• Apply this tank mixture for control of emerged annual weeds
at the time of application.
• This combination is also effective for top kill and suppression
of perennial weeds.
• This mixture will provide residual control or suppression of the
weeds listed in Table 1.
• Refer to the Gramoxone brand(s) label(s) for adjuvant
instructions.
Solo glyphosate brands
that are registered for use
on crops listed on this
label


• Apply this tank mixture for control of existing annual weeds at
the time of application.
• This combination is also effective for top control or
suppression of perennial weeds.
• This mixture will provide residual control or suppression of the
weeds listed in Table 1.

–27–
• Refer to the specific solo glyphosate brand label for adjuvant
instructions.
Solicam® or other solo
norflurazon brands that
are registered for use on
crops listed on this label
• Use this mixture for improved residual control of weeds such
as clover, cutleaf evening-primrose, dandelion, henbit,
horseweed (marestail), lambsquarters, and puncturevine.
• Keep this tank mixture from contacting foliage, fruits, and
stems during application.
• The tank mixture of Princep 4L + Solicam or other solo
norflurazon brands can also be applied with solo glyphosate
brands or Gramoxone brands.
Surflan® or other solo
oryzalin brands that are
registered for use on
crops listed on this label
• Use this mixture for additional residual weed control.
• The tank mixture of Princep 4L + Surflan or other solo oryzalin
brands can also be applied with solo glyphosate brands or
Gramoxone brands.
Rely® or other solo
glufosinate brands that
are registered for use on
crops listed on this label
• Apply this tank mixture for control of existing annual weeds at
the time of application.
• This combination is also effective for top control or
suppression of perennial weeds.
• This mixture will provide residual control or suppression of the
weeds listed in Table 1.
1Refer to individual product labels for precautionary statements, restrictions, rates, adjuvants and/or
surfactants, approved uses, labeled crops and a list of weeds controlled.

Tank Mixture with Roundup® or Touchdown® Brand Herbicides

This tank mixture is effective in grape vineyards and in the following bearing or nonbearing
tree crops for control of existing vegetation and for residual control of the annual broadleaf
and grass weeds claimed for this product applied alone. This combination is also effective
for partial control of perennial weeds contacted by the spray mixture during application.

almonds** (CA only)
apples
avocados* (CA and FL only)
cherries (tart and sweet****2)
filberts**
grapefruits*** (CA, FL, and TX)
grapes*
lemons* (AZ and CA)
macadamia nuts**
oranges*** (AZ, CA, FL, and TX)
peaches****1
pears*
pecans**
plums****2
walnuts**


Use the specified rate given elsewhere on this label for Princep 4L applied alone to the
crop being treated. Add to the spray tank the specified labeled rate of a Roundup or
Touchdown brand product per acre, depending on weeds present and their growth stage.
Also add an agriculturally approved nonionic surfactant at 0.5% by volume of spray
solution. Apply the mixture in 10-40 gal of water per acre as a postemergence spray to
the weeds at the appropriate weed growth stage given on the Roundup label.

–28–
Add Princep 4L to the spray tank first, then add the Roundup or Touchdown brand
product. Provide constant agitation during mixing and application to keep the mixture in
suspension. Refer to Application Procedures section of this label for further directions.

Precaution: To avoid crop injury, take extreme care to avoid contact of herbicide solution,
spray, drift, or mist with foliage or green bark of trunk, branches, suckers, fruit, or other
parts of trees or vines. Observe precautions on both the Princ ep 4L and Roundup or
Touchdown labels for each crop involved.

Always refer to the labels of both herbicides for further directions, specific weeds
controlled, and precautions and limitations on each crop.

 *Allow a minimum of 14 days between last application and harvest.

**Allow a minimum of 21 days between last application and harvest of these crops.

***Allow a minimum of 1 day between last application and harvest of these crops.

****Allow a minimum of 17 days between last application and harvest of these crops.


1Limited to AR, CA, LA, MO, OK, TX, and states east of the Mississippi River. For CA,
see specific directions in the Almonds, Peaches, and Nectarines (CA only) section.


2Plums and sweet cherries: limited to MO and states east of the Mississippi River, except
TN.

Tank Mixture with Solicam®

For improved control of such weeds as clover, cutleaf eveningprimrose, dandelion, henbit,
horseweed or marestail, lambsquarters, and puncturevine, apply Princep 4L in tank
mixture with Solicam DF on these crops:

oranges
grapefruit
lemons

Apply 4 qt/A of Princep 4L plus 4-5 lb of Solicam DF Herbicide (78.6% active ingredient)
in 20-100 gal of water per acre. Princep 4L + Solicam may be applied in tank mixture
with Gramoxone Inteon or Roundup.

Follow the labeled directions and restrictions of use on labels of the herbicides used in
mixtures with Princep 4L.

Precaution: Keep Princep 4L + Solicam mixtures from contacting foliage, fruits, and
stems of citrus trees during spraying.

–29–
Princep 4L Plus Surflan®

Use this tank mix in the following crops for preemergence control of all weeds claimed on
both labels:

almonds
apples
avocados
caneberries
cherries
filberts
grapes
grapefruit
lemons
oranges
peaches
pears
pecans
plums
English walnuts


Apply the Princep 4L rate given under the appropriate crop on this label plus 2.67-5.33 lb
of Surflan 75W or 2-4 qt of Surflan A.S. in 20-40 gal of water per acre. Refer to the Surflan
75W or Surflan A.S. label for complete tank mix directions. Observe all precautions and
limitations on the Princep 4L and Surflan labels.

FIELD CROPS

CORN (FIELD, POP AND SWEET)
[Not for use on popcorn in CA.]

Apply a maximum of 2 qt Princep 4L per acre (2.0 lb ai/A) as a single preemergence
application on soils that are not highly erodible or on highly erodible soils, as defined by
the Natural Resources Conservation Service, if at least 30% of the soil is covered with
plant residues. If a second treatment is required following an earlier herbicide application,
the total simazine applied may not exceed 2.5 lb ai/A per calendar year.

If the soil is highly erodible and covered with <30% plant residues, apply a maximum of
1.6 lb ai/acre as a single preemergence applicat ion. For highly erodible soils and is
covered with <30% plant residue, do not apply more than one application of Princep 4L
and not more than 1.6 lb ai/A (1.6 qt/A).

Pre-grazing/pre-harvest interval for field corn: 60 days
Pre-grazing/pre-harvest interval for popcorn: 60 days
Pre-grazing/pre-harvest interval for sweet corn: 45 days

Nitrogen solution or complete liquid fertilizer may replace all or part of the water in the
spray. Determine the physical compatibility of Princep 4L with fertilizer before use. Refer
to the Product Information section of this label for a compatibility test procedure. Do
not apply after corn has emerged, as there is danger of liquid fertilizer causing crop injury.
Use a minimum of 10 gal of spray mixture per acre.

–30–
Preemergence: Apply before weeds and corn emerge. Use the specified rate as stated
above.

Preplant: Broadcast in the spring at the specified rate as stated above. If soil is tilled
or worked after application, avoid deep incorporation of Princep 4L. Best results will be
obtained when Princep 4L is applied within 2 weeks before planting. Under dry weather
conditions, preplant applications may give better weed control than preemergence. If
weeds develop, particularly under relatively dry conditions, a shallow cultivation will
generally result in better weed control.

Winter Annual Broadleaf Control – Preemergence Fall Application

For preemergence control of winter annual weeds, such as common chickweed, henbit,
shepherdspurse, tansymustard, wild mustard, annual bluegrass, downy brome, and
others, broadcast 1 qt/A of Princep 4L after harvest of the preceding crop and prior to
weed emergence on land to be planted to corn the following year. A tillage operation may
precede the application. Do not apply to frozen ground. If Princep 4L is used in the fall
corn weed control program, do not exceed 1.5 qt of Princep 4L preemergence in the
spring.

Restrictions:
1. Do not apply more than 2.5 qt of Princep 4L per acre of corn per calendar year.
2. Do not plant any crop except corn until the following year.
3. Do not graze or harvest field corn or popcorn for 60 days following application.
4. Do not graze or harvest sweet corn for 45 days following application.
5. Do not apply Princep 4L preplant incorporated for weed control in corn in the High
Plains and Intermountain areas of the West (including central and western KS,
western NE, western OK, and the Panhandle of TX) where rainfall is sparse and
erratic or where irrigation is required.
6. Do not plant sugar beets, tobacco, vegetables (including dry beans), spring-
seeded small grains, or small -seeded legumes and grasses the year following
Princep 4L application.
7. Applications made to sweet corn by mechanically pressurized handguns are
restricted to spot treatment only.

Precautions:
1. Following harvest, plow and thoroughly till the soil in fall or spring to minimize
possible injury to spring-seeded rotational crops, regardless of the rate used.
2. In the High Plains and Intermountain areas of the West where rainfall is sparse
and erratic or where irrigation is required, use Princep 4L only when corn is to
follow corn or when a crop of untreated corn is to precede other rotational crops.
3. Injury may occur to soybeans planted in north- central and northwest IA, south -
central and southwest MN, northeast NE, southeast SD, and other areas the year
following application on soils having a calcareous surface layer.

–31–
Tank Mixtures on Corn

AAtrex® or other solo atrazine containing products: Use Princep 4L in a preplant or
preemergence tank mixture with AAtrex brands or other solo atrazine containing products
for control of many annual weeds, including carpetweed, crabgrass, fall panicum, foxtail,
lambsquarters, morningglory, pigweed, ragweed, and velvetleaf.

When tank mixing or sequentially applying simazine and/or atrazine or products
containing either activ e ingredient to corn, the total pounds of simazine and/or atrazine
applied must not exceed 2.5 lb ai/acre per calendar year.

Refer to the AAtrex or other solo atrazine containing product label for complete directions
and use 1 qt/A of Princep 4L for each 1 lb/A of AAtrex. Also refer to the AAtrex or other
solo atrazine containing product label and the Corn section of this label for precautions
and restrictions.

Gramoxone brands: Use in a tank mixture where corn will be planted directly in a cover
crop, established sod, or previous crop residues. This combination controls existing
vegetation and provides residual control of the annual broadleaf and grass weeds listed
in table 1.

Add Princep 4L to the spray tank, mix thoroughly with water, and then add Gramoxone
brands and a nonionic surfactant. Provide constant agitation during mixing and
application to keep the mixture in suspension.

Apply up to 2 qt of Princep 4L plus the specified labeled rate of the Gramoxone brand in
20-60 gal of water per acre as a broadcast spray, either before or after planting, but before
corn emerges. Add a nonionic surfactant at the rate of 0.5 pt/100 gal of spray volume.

For further information, see product information, caution and warning statements,
precautions, restrictions, and notes on the Princep 4L and the Gramoxone brand labels.

NURSERIES, AND CHRISTMAS TREE PLANTINGS

Nurseries (see list below)

Apply 2-3 qt Princep 4L per acre in fall or spring. Refer to Table 1 for a list of weeds
controlled or suppressed. Refer to Table 3 for a list of nursery species that can be treated
with Princep 4L. To avoid crop injury, do not apply for at least one year after transplanting.

Restrictions for use in Nurseries:
1. Do not apply more than 3 qt Princep 4L/A (3 lb ai/A) per calendar year.
2. Do not apply more than once per calendar year.
3. Applications made by mechanically pressurized handguns are restricted to spot
treatment only.

–32–


Christmas Tree Plantings

Remove or control weed growth before Princep 4L application. Apply 2-4 qt Princep 4L
per acre after transplanting. Use at the same rate for annual maintenance applications.

For quackgrass control apply 4 qt/A Princep 4L in the fall or apply a split application of 2
qt/A Princep 4L in the fall plus 2 qt/A Princep 4L in early spring, after quackgrass begins
growth.

Refer to Table 1 for a list of weeds controlled or suppressed. Refer to Table 3 for
Christmas tree species that can be treated with Princep 4L.

Restrictions for use in Christmas Trees
1. Do not apply more than 4 qt Princep 4L/A (4 lb ai/A) per calendar year.
2. Do not apply more than twice per calendar year.
3. Applications made by mechanically pressurized handguns are restricted to spot
treatment only.

Precautions to avoid tree injury:
1. Do not use Princep 4L on seedbeds or cuttingbeds.
2. In California, Oregon, and Washington, do not apply to Christmas trees sooner
than one year after transplanting. In other areas, do not apply to Christmas trees
transplants less than 2 years of age.
3. Do not use until soil is firmly settled around roots..

Table 3. Trees and Shrubs That Can be Treated With Princep 4L
CONIFERS DECIDUOUS TREES AND WOODY
ORNAMENTALS
Arborvitae American elm
Austrian pine Siberian elm
Bishop pine Barberry
Knobcone pine Boxelder
Lodgepole pine (shore pine) Bush honeysuckle
Monterey pine Caragana
Mugho pine Cotoneaster
Red pine (Norway pine) Dogwood
Scotch pine Eucalyptus
White pine Holly (Ilex spp.)
Blue spruce Honey locust
Norway spruce Oregon grape (Mahonia spp.)
Red spruce Pieris spp.
White spruce Red oak
Balsam fir Russian olive
Douglas fir Oleander

–33–
Fraser fir Palm
White fir Bottle brush
Hemlock Carob
Juniper
Red cedar
White cedar
Yew (Taxus spp.)

Pennant Magnum® Tank Mix: Princep 4L may be tank mixed with Pennant Magnum
Herbicide to control weeds in containerized, field, and liner* grown ornamentals and
commercial landscapes. See the Pennant Magnum label for ornamental species, weeds
controlled with this tank mixture, and for other information.

*Plants transplanted normally in rows in a nursery or similar area for further growth prior
to transplanting to final growing place.

Princep 4L Plus Surflan or other solo oryzalin brands on Christmas Trees: Use this
tank mix for additional preemergence control of weeds listed on the Surflan label or other
solo oryzalin brand labels that are registered for use on Christmas trees. Refer to Surflan
or other solo oryzalin brand labels for use rates, precautions and restrictions. Use on field
grown conifer species listed on the labels for each herbicide plus grand fir, alpine fir,
Engelmann spruce, black spruce, Colorado blue spruce, Coulter pine, giant redwood, and
Veitchi fir.

Apply in sufficient water per acre to uniformly treat the area. Follow overtop sprays with
sprinkler irrigation to move the herbicide from leaf surfaces to the soil. Remove weed
growth before application. Mix weed residues, prunings, or trash into the soil, or remove
them before treatment. Soil should be in good tilth and free of clods at time of application.
Shallow cultivation (1-2 inches) after treatment will not reduce weed control. Observe all
precautions and restrictions on the Princep 4L and Surflan label or other solo oryzalin
brand label.

Note: Length of weed control may be reduced when continuous wet soil conditions follow
herbicide application.

Precautions: To avoid plant injury, (1) Do not use on seedbeds or on unrooted cuttings.
(2) Do not use in greenhouses or other enclosed areas.


TURFGRASS
Apply Princep 4L to turfgrass grown on sod farms, fairways, lawns, and other similar
areas for broad spectrum preemergent control of the broadleaf and grassy weeds listed
in Table 1.

For use on warm season turf grass only (e.g., Bermudagrass, Centipedegrass, St.
Augustinegrass, and Zoysiagrass.

–34–

TURFGRASSES FOR SOD (FL ONLY)

St. Augustinegrass, Bermudagrass, Centipedegrass, and Zoysiagrass

Apply 2-4 qt/A of Princep 4L, according to soil texture as indicated below. This product
must be watered in immediately after application if applied at a rate greater than 2 lb ai/A
(2 qt/A of Princep 4L).

Muck or peat 4 qt Old beds

within 2 days after lifting of sod
 New beds

3-4 days after sprigging or plugging
Sandy soil 2 qt Old beds within 2 days after lifting of sod

 New beds

7-10 days after sprigging or plugging

If weeds regrow, apply an additional 2 qt /A or Princep 4L on muck or peat, or 1 qt/A of
Princep 4L on sandy soil.

Use Precautions:
• To avoid turf injury, use only on turfgrass reasonably free of infestations of insects,
nematodes, and diseases.
• Application to newly sprigged turfgrass may result in temporary slowing of growth.

Use Restrictions:
• Do not apply within 30 days prior to cutting or lifting.
• Do not apply in combination with surfactants or other spray additives.
• Do not exceed 4 qt of Princep 4L per acre (4 lb ai/A) per application.
• Do not make more than 2 applications per year.
• Do not exceed 6 qt Princep 4L per acre (6 lb ai/A) per calendar year.
• Do not graze or feed turf clippings to animals.

TURFGRASSES FOR SOD (IN STATES EXCEPT FL)

St. Augustinegrass, Bermudagrass, Centipedegrass, and Zoysiagrass

Apply 1-2 qt/A of Princep 4L.

Do not apply to established beds within 2 days after lifting of sod. Do not apply to new
beds before 7-10 days after sprigging or plugging.

Do not apply more than 2 lb ai/A (2 qt of Princep 4L) per application and not more than
two applications per calendar year. Do not exceed 3 qt/A Princep 4L (3 lb ai/A) per
calendar year.

–35–

Use Precautions:
• On newly sprigged turfgrass, hybrid bermudagrass, nondormant bermudagrass, or
nondormant zoysiagrass, temporary slowing of growth and yellowing may occur
following application.

Use Restrictions:
• Use only on turfgrass reasonably free of infestations of ins ects, nematodes, and
diseases.
• Do not use north of NC (except in the VA Coastal Plains) or on soils with a pH
above 7.8.
• Do not use on muck or alkaline soils.
• Do not apply over the rooting area of trees or ornamentals not listed on this label.
• Do not seed or overseed with desirable turfgrass within 4 months before or 6
months after treatment.
• Do not apply this product to newly seeded grasses until they have overwintered
and have a well-developed rhizome system.
• Do not exceed 2 qt/A of Princep 4L within 12 months of seeding grasses.

Note: Do not graze or feed turf clippings to animals or illegal residues may result.

TURFGRASS FOR FAIRWAYS, LAWNS, AND SIMILAR AREAS

Bermudagrass, Centipedegrass, St. Augustinegrass, and Zoysiagrass

For control of winter annual weeds, apply Princep 4L after September 1 (after October 1
for annual bluegrass) before emergence of weeds. Fall applications of Princep 4L will
control annual bluegrass, burclover, lawn burweed, common and mouseear chickweed,
corn speedwell, henbit , hop clover, spurweed, and parsley -piert. Princep 4L will also
control these weeds soon after emergence. For control of summer annual weeds listed
in Table 1 apply Princep 4L in late winter before the weeds emerge. Apply in a minimum
of 15 gal of water per acre.

Irrigate with ½ inch of water if rainfall does not occur within 10 days after preemergence
treatment.

For non-residential sites, where annual bluegrass is the major weed, use 1 qt of Princep
4L per acre (22 ml. or 0.75 fl. oz. per 1,000 sq. ft.) tank-mixed with another herbicide for
Poa annua control or repeat application of 1 qt Princep 4L 4 to 6 weeks later . Use 1-2
qt/A of Princep 4L (22-44 ml. or 0.75-1.5 fl. oz. per 1,000 sq. ft.) for control of other weeds.
However, do not exceed 1 qt /A of Princep 4L per treatment on newly sprigged turfgrass
or on hybrid bermudagrass.

For control of summer annuals which emerge after the initial application, apply an
additional 1 qt/A of Princep 4L at least 30 days after the initial application, but not after
June 1. However, do not make more than 2 applications per calendar year.

–36–

For residential turf on lawns, institutional turf, parks or recreation fields, do not exceed 1.6
qt per acre of Princep 4L (1.2 fl oz per 1000 sq ft) per application (equivalent to 1.6 lb
ai/A). Irrigate with ½ in of water immediately following application to remove product from
turf foliage.


Use Precautions:
• Application to newly sprigged turfgrass, hybrid bermudagrass, nondormant
bermudagrass, or nondormant zoysia grass, may result in temporary slowing of
growth and yellowing
• To avoid turf injury, use only on turfgrass reasonably free of infestations of insects,
nematodes, and diseases.

Use Restrictions:
• Do not use on golf greens
• Do not use north of NC (except in the VA Coastal Plains) or on soils with a pH
above 7.8.
• Do not use on muck or alkaline soils.
• Do not apply over the rooting area of trees or ornamentals not listed on this label.
• Do not seed or overseed with desirable turfgrass within 4 months before or 6
months after treatment.
• Do not apply this product to newl y seeded grasses until they have overwintered
and have a well-developed rhizome system.
• Do not exceed 2 qt/A of Princep 4L within 12 months of seeding grasses.
• Do not exceed 2 qt/A of Princep 4L (2 lb ai/A) per application.
• Do not exceed 3 qt/A Princep 4L (3 lb ai/A) per calendar year.
• Do not make more than 2 applications per year.
• Do not graze or feed turf clippings to animals.

Tank-Mix Partner Table
Product Name EPA Registration
Number
Active Ingredient(s)
AAtrex Various brands atrazine
Gramoxone 100-1431, 100-1652 paraquat
Rely 7969-448 glufosinate
Solicam 61842-41 norflurazon
Surflan Various brands oryzalin

STORAGE AND DISPOSAL

Do not contaminate water, food, or feed by storage or disposal.

Pesticide Storage

–37–
Ground water contamination may be reduced by diking and flooring of permanent liquid
bulk storage sites with an impermeable material.

Pesticide Disposal

Pesticide wastes may be toxic. Improper disposal of unused pesticide, spray mixture, or
rinse water is a violation of Federal law. If these wastes cannot be used according to
label instructions, contact your State Pesticide or Environmental Control Agency, or the
Hazardous Waste representative at the nearest EPA Regional Office for guidance in
proper disposal methods.

Container Handling [less than or equal to 5 gallons]
Non-refillable container. Do not reuse or refill this container. Triple rinse container (or
equivalent) promptly after emptying. Triple rinse as follows: Empty the remaining
contents into application equipment or a mix tank and drain for 10 seconds after the flow
begins to drip. Fill the container ¼ full with water and recap. Shake for 10 seconds.
Pour rinsate into application equipment or a mix tank or store rinsate for later use or
disposal. Drain for 10 seconds after the flow begins to drip. Repeat this procedure two
more times. Then offer for recycling if available or puncture and dispose of in a sanitary
landfill, or by incineration, or by other procedures approved by state and local
authorities.

Container Handling [greater than 5 gallons]
Non-refillable container. Do not reuse or refill this container. Triple rinse container
(or equivalent) promptly after emptying. Triple rinse as follows: Empty the remaining
contents into application equipment or a mix tank. Fill the container ¼ full with water.
Replace and tighten closures. Tip container on its side and roll it back and forth,
ensuring at least one complete revolution, for 30 seconds. Stand the container on its
end and tip it back and forth several times. Turn the container over onto its other end
and tip it back and forth several times. Empty the rinsate into application equipment or
a mix tank or store rinsate for later use or disposal. Repeat this procedure two more
times. Then offer for recycling if available or puncture and dispose of in a sanitary
landfill, or by incineration, or by other procedures approved by state and local
authorities.

Container Handling [greater than 5 gallons]
Refillable container. Refill this container with pesticide only. Do not reuse this
container for any other purpose. Cleaning the container before final disposal is the
responsibility of the person disposing of the container. Cleaning before refilling is the
responsibility of the person refilling. To clean container before final disposal, empty the
remaining contents from this container into application equipment or mix tank. Fill the
container about 10 percent full with water. Agitate vigorously or recirculate water with
the pump for 2 minutes. Pour or pump rinsate into application equipment or rinsate
collection system. Repeat this rinsing procedure two more times. Then offer for

–38–
recycling if available or puncture and dispose of in a sanitary landfill, or by incineration,
or by other procedures approved by state and local authorities.
For minor spills, leaks, etc., follow all precautions indicated on this label and clean up
immediately. Take special care to avoid contamination of equipment and facilities during
cleanup procedures and disposal of wastes. In the event of a major spill, fire, or other
emergency, call 1-800-888-8372, day or night.

CONTAINER IS NOT SAFE FOR FOOD, FEED, OR DRINKING WATER.

AAtrex®, AAtrex® Nine-O®, Gramoxone®, Pennant Magnum®, Princep®, and the
Syngenta logo are trademarks of a Syngenta Group Company

Compex® trademark of KALO Agricultural Chemicals, Inc.

Rely® is a trademark of Bayer CropScience LP
Solicam® is a trademark of Tessenderlo Kerley, Inc.

Surflan® trademark of Dow AgroSciences

Unite® trademark of HACO, Inc.

X-77® trademark of Loveland Industries, Inc.

Viton® is a trademark of The Chemours Company FC, LLC.

©20__ Syngenta


For non-emergency (e.g., current product information), call
Syngenta Crop Protection at 1-800-334-9481.


Manufactured for:
Syngenta Crop Protection, LLC
P. O. Box 18300
Greensboro, North Carolina 27419-8300


Princep 4L 526 MAS 1121 AMEND-C OCT2022-CL - di - 11/22/2022
000100-00526.20221026C.Princep_4L.AMEND.OCT2022-CL