crop-chem-docs/corpus/epa_ppls/100-603.md

Princep® Caliber 90® HERBICIDE

• EPA Reg No: 100-603
• Registrant: SYNGENTA CROP PROTECTION, LLC
• Signal word: Caution
• Active ingredients: Simazine (90%)
• Label accepted: 2023-11-28
• Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000100-00603-20231128.pdf

---

Notification ABN or Label Acceptable v.20220527 November 28, 2023 Mark W. White Sr. Stewardship & Regulatory Portfolio Manager Syngenta Crop Protection, LLC P.O. Box 18300 Greensboro, NC 27419-8300 Subject: Notification per PR N 98-10 – Label Clarification Product Name: PRINCEP CALIBER 90 HERBICIDE EPA Registration Number: 100-603 Application Date: 3/8/2023 Case Number: 477054 Dear Mark W. White: The Agency is in receipt of your Application for Pesticide Notification under Pesticide Registration Notice (PRN) 98-10 for the above referenced product. The Registration Division (RD) has conducted a review of this request for its applicability under PRN 98-10 and finds that the action requested falls within the scope of PRN 98-10. The label submitted with the application has been stamped “NOTIFICATION” and placed in our records. 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 the Federal Insecticide, Fungicide, and Rodenticide Act (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. If you have any questions, please contact Sarah Meadows at 202-566-2828 or at meadows.sarah@epa.gov.

Page 2 of 2 EPA Reg. No. 100-603 Case No. 477054 Sincerely, Emily Schmid, Product Manager 25 Herbicide Branch Registration Division (7505P) Office of Pesticide Programs

[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® Caliber 90® [ABN: Princep® Caliber 90® CR] Herbicide For weed control in avocado, blueberry, caneberry, citrus fruit, grapes, olives, pome fruit, stone fruit, strawberry, tree nuts, corn (field, pop, sweet), Christmas trees, and nurseries Active Ingredient: Simazine: 2-chloro-4,6-bis(ethylamino)-s-triazine ................................................. 90.0% Other Ingredients: 10.0% Total: 100.0% Princep Caliber 90 is a water-dispersible granule that contains 90 lb of simazine per 100 lb of product. KEEP OUT OF REACH OF CHILDREN. CAUTION See additional precautionary statements and directions for use inside booklet. EPA Reg. No. 100-603 EPA Est.

---

Net Contents [Batch Code: _____ ] (For nonrefillables only.) 100-603 11/28/2023

-2- FIRST AID If on skin or clothing x Take off contaminated clothing. x Rinse skin immediately with plenty of water for 15-20 minutes. x Call a poison control center or doctor for treatment advice. If in eyes x Hold eye open and rinse slowly and gently with water for 15-20 minutes. x Remove contact lenses, if present, after the first 5 minutes, then continue rinsing eye. x Call a poison control center or doctor for treatment advice. If swallowed x Call a poison control center or doctor immediately for treatment advice. x Have person sip a glass of water if able to swallow. x Do not induce vomiting unless told to do so by a poison control center or doctor. x Do not give anything by mouth to an unconscious person. If inhaled x Move person to fresh air. x If person is not breathing, call 911 or an ambulance, then give artificial respiration, preferably mouth-to-mouth, if possible. x 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 Emergence Assistance (Spill, Leak, Fire, or Accident), Call 1-800-888-8372 PRECAUTIONARY STATEMENTS Hazards to Humans and Domestic Animals CAUTION Harmful if swallowed, or absorbed through the skin. Causes moderate eye irritation. Avoid contact with eyes, skin, or clothing.

-3- Personal Protective Equipment (PPE) Mixers and loaders supporting groundboom applications must wear: x Coveralls over long-sleeved shirt and long pants x 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 x Chemical-resistant footwear plus socks x Chemical-resistant apron x A minimum of a NIOSH-approved particulate filtering facepiece respirator with any N, R, or P filter; OR a NIOSH-approved elastometic particulate respirator with N, R, or P filter; OR a NIOSH-approved powered air purifying respirator with HE filters. All other mixers, loaders, applicators, and other handlers must wear: x Long-sleeved shirt and long pants x Shoes plus socks x 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 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 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 Control Statements When handlers use 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.

-4- User Safety Recommendations Users should: x Wash hands before eating, drinking, chewing gum, using tobacco, or using the toilet. x Remove clothing/PPE immediately if pesticide gets inside. Then wash thoroughly and put on clean clothing. x Remove PPE immediately after handling this product. Wash the outside of gloves before removing. As soon as possible, wash thoroughly and change into clean clothin g. 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 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 field 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

-5- 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: x Do not apply within 66 feet of standpipes in tile-outletted terraced fields. x 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. x 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 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 this 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 permitted by applicable law: (1) this 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 Warranty and of 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 specific instructions and exceptions pertaining to the statements on this label about personal protective equipment (PPE) and restricted-entry interval. The requirements in this box only apply to uses of this product that are covered by the Worker Protection Standard. 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: x Coveralls x Chemical resistant gloves made of any waterproof material x Shoes plus socks 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) 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, EXW\OUXEEHU•PLOVQLWULOHUXEEHU•PLOVQHRSUHQHUXEEHU•PLOVSRO\YLQ\O chloride (P9&•PLOVRU9LWRQ•PLOV

-9- 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 agricultural 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 DIRECTIONS 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. 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 or any other use. 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 this herbicide before weeds emerge or after removal of weed growth. Princep Caliber 90 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.

-10- Since this product enters weeds mainly through their roots, moisture is needed to move it into the root zone. Very dry soil conditions and lack of rainfall following application may necessitate shallow cultivation. This product is noncorrosive to equipment, nonflammable, and has low electrical conductivity. WEED RESISTANCE MANAGEMENT SIMAZINE GROUP 5 HERBICIDE Princep Caliber 90 contains the active ingredient simazine which is a Group 5 herbicide that inhibits photosynthesis at photosystem II (PSII, Site of Action Group 5). 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, a herbicide mode of action classification by itself may not adequately address specific weeds that are resistant to specific herbicides. Consult your local Syngenta representative, and/or agricultural advisor to determine appropriate actions for treating specific resistant weeds. Principles of Herbicide Resistant Weed Management 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.

-11- 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. 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 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 postharvest to prevent seed production.

-12- Resistant Weeds x 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. PERENNIAL CROP REPLANTING If replanting perennial crops, do not apply Princep Caliber 90 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 application. 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 gallons 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 provide propeller shear action for dispersing and mixing this product. The pump should provide a minimum of 10 gals./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 suction side of 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: x User must only apply with the release height recommended by the manufacturer, but no more than 4 feet above the ground or crop canopy. x Applicators are required to use a coarse or coarser droplet size (ASABE S572) x Do not apply when wind speeds exceed 10 miles per hour at the application site.

-13- x Do not apply during temperature inversions. x 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. 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 x 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. x Pressure – Use the lowest spray pressure recommended for the nozzle to produce the target spray volume and droplet size. x Spray nozzle – Use a spray nozzle that is designed 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

-14- 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 to be familiar with local wind patterns and terrain that could affect spray drift. HANDHELD TECHNOLOGY APPLICATIONS Take precautions to minimize spray drift. MIXING PROCEDURES All Uses: (1) Be sure sprayer is clean and not contaminated with any other materials, as 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) Pour product directly from bag into tank. (6) Continue filling tank until 90% full. Increase agitation if necessary to maintain surface action. (7) Add tank mix herbicide(s) after this product is thoroughly suspended. (8) Finish filling tank. Maintain agitation to avoid separation of materials. (9) Empty tank as completely as possible before refilling to prevent buildup of emulsifiable concentrate residue from possible tank mix herbicides. (10) If an 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. Compatibility test: To determine the tank mix compatibility of Princep Caliber 90 with liquid fertilizer, crop oil, spreaders, or 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 same 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

-15- thoroughly mixed. The appropriate amount of herbicides for this test follows (assuming a spray volume of 25 gal/A): Dry herbicides: For each pound per acre, add 1.5 teaspoons to each jar. Fluff up wettable powder products before measurin g. 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 probably can be sprayed as long as good agitation is used. If the mixtures are incompatible, test the following methods of improving compatibility: (A) slurry the dry herbicide(s) in water before addition, or (B) add ½ of the compatibility agent to the fertilizer and the other ½ to the emulsifiable concentrate or flowable herbicide before addition to the mixture. If still incompatible, do not use the materials mixed in the same spray tank. WEEDS CONTROLLED Princep Caliber 90 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 Caliber 90 is applied according to all label use directions. Princep Caliber 90 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 Caliber 90 may reduce residual weed control effectiveness. Refer to the crop sections on this label for specific rates and use directions.

-16- Table 1. Annual Weeds Controlled ANNUAL GRASSES BROADLEAF WEEDS Barnyardgrass Al yssum Mustard, wild Bluegrass, annual Burclover Nightshade species, annual Brome, downy (cheatgrass) Carelessweed Paintbrush, Flora's Crabgrass species Carpetweed Pepperweed Fescue, rattail Chickweed, common Pepperweed, yellow flower Foxtail species Fiddleneck Pi gweed species Goosegrass Filaree Pineappleweed Hairgrass, silver Fireweed Purslane, common Junglerice Fivehook, bassia Pusle y, Florida Oats, wild Groundsel Ra gweed, species Fall panicum Henbit Redmaids Ryegrass, annual Knawel (German moss) Shepherdspurse Signalgrass species Lambsquarters, common Smartweed species, annual Witchgrass Lettuce, prickl y Spanishneedles Morningglory, species, annual Speedwell Mustard, tansy Thistle, Russian CROP USE DIRECTIONS AVOCADO Apply Princep Caliber 90 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 Rate 1 (lb/A) Application Timing Restrictions Avocado 2.2-4.4 Following final grove preparation (See “Precautions” for grove establishment interval before application) x Apply to avocados in California and Florida only. x Do not apply more than 4.4 lb/A (4 lb ai/A) per calendar year. x Do not make more than one application per calendar year. x Applications made by mechanically pressurized handguns are restricted to spot treatment onl y. 1Rates are based on a broadcast treatment acre. For band applications, reduce the broadcast rate of Princep Caliber 90 and water per acre in proportion to the area actually sprayed.

-17- 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.
3. Immediately following application, limit irrigation to ½ inch. BLUEBERRIES AND CANEBERRIES Apply Princep Caliber 90 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 Rate 1 (lb/A) Application Timing Remarks Blueberries Blackberries Boysenberries Loganberries Raspberries 2.2-4.4 x Spring x Spring and Fall (See “Precautions” for orchard establishment interval before application) To control quackgrass, apply 4.4 lb/A (4 lb ai/A) in the fall or split the application by applying 2.2 lb/A in the fall followed by 2.2 lb/A in the spring when quackgrass is actively growing. Restrictions x Do not apply more than 4.4 lb/A (4 lb ai/A) per calendar year. x Do not make more than two applications per calendar year. x Allow a minimum of 90 days between applications. x Do not apply when fruit is present. x Apply in a minimum of 40 gal of water per acre. x 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 Caliber 90 and water per acre in proportion to the area actually sprayed. Precautions to reduce crop injury risk:
4. On plantings less than 6 months old, use ½ the specified rate.
5. Avoid use on sand, sandy loam or loamy sand soils.
6. Immediately following application, limit irrigation to ½ inch.

-18- CITRUS FRUIT Apply Princep Caliber 90 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 (lb/A) Application Timing Restrictions Arizona only Orange Grapefruit Lemon Lime Tangerine Kumquat Mandarin Pummelo Satsuma Cultivars, varieties, and/or hybrids of these 2.2 x Spring x Fall x Spring and Fall (See “Precautions for orchard establishment before application) x Do not apply more than 4.4 lb/A (4 lb ai/A) per calendar year. x Do not apply more than 2.2 lb/A (2 lb ai/A) per application. x Do not make more than two applications per calendar year. x Allow a minimum of 40 days between applications. x Do not harvest crop for 1 day following application. x Do not use in nurseries or apply to bedded lemons or oranges. x Applications made by mechanically pressurized handguns are restricted to spot treatment onl y. 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 2.2-4.4 x Spring x Fall x Spring and Fall x Do not apply more than 4.4 lb/A (4 lb ai/A) per calendar year. x Do not make more than two applications per calendar year. x Allow a minimum of 40 days between applications. x Do not harvest crop for 1 day following application. x Do not use in nurseries or apply to bedded grapefruit, lemons or oranges. x Do not use in the Imperial, Coachella or Palo Verde Valleys, or crop injury may occur. x Applications made by mechanically pressurized handguns are restricted to spot treatment onl y.

-19- Florida2 only Orange Grapefruit Lemon Lime Tangerine Calamondin Citron Citrus hybrids Kumquat Mandarin Pummelo Satsuma Tangelo Tangor Cultivars varieties, and/or hybrids of these 4.4 x Spring x Fall x Spring and Fall x Do not apply more than 8.8 lb/A (8 lb a./A) per calendar year. x Do not apply more than 4.4 lb/A (4 lb ai/A) per application. x Do not make more than two applications per calendar year. x Allow a minimum of 40 days between applications. x Do not harvest crop for 1 day following application. x Do not use in nurseries. x 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 Caliber 90 and water per acre in proportion to the area actually sprayed. 2For 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:
2. Do not exceed 4.4 lb/A/year of Princep Caliber 90 (4 lbs. ai/A) on grove planted trees 1 year old or less or crop injury may occur.
3. Do not apply to bedded citrus (except for FL grapefruit and oranges)
4. 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 8.8 lb of Princep Caliber 90 (8.0 lb ai/A) per treated acre as a single application in the spring using a 50% band application. The amount of Princep Caliber 90 applied per acre of field must not exceed 4.4 pounds (4.0 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.

-20- GRAPES Apply Princep Caliber 90 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 Rate 1 (lb/A) Application Timing Restrictions Grapes 2.2-4.4 After harvest through early spring (See “Precautions” for vineyard establishment interval before application) x Do not apply more than 4.4 lb/A (4 lb ai/A) per calendar year. x Do not make more than one application per calendar year. x 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 Caliber 90 and water per acre in proportion to the area actually sprayed. Precautions to reduce crop injury risk:

1. Apply only to vine 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 Caliber 90 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 Rate 1 (lb/A) Application Timing Restrictions Olives 2.2-4.4 Following grove preparation in the fall (See “Precautions” for orchard establishment interval before application) x Do not apply more than 4.4 lb/A (4 lb. ai/A) per calendar year. x Do not make more than one application per calendar year. x 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 Caliber 90 and water per acre in proportion to the area actually sprayed. Precautions to reduce crop injury risk:
4. Apply only to vineyards where trees have been established 12 months or more.
5. Avoid use on sand, sandy loam or loamy sand soils.
6. Immediately following application, limit irrigation to ½ inch.

-21- POME FRUIT Apply Princep Caliber 90 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 Rate 1 (lb/A) Application Timing Restrictions Apple Pear Azarole Chinese quince Japanese quince Loquat Mayhaw Medlar Quince Tejocote Cultivars varieties and/or h ybrids of these. 2.2-4.4 Spring or Fall (See “Precautions” for orchard establishment interval before application) x Do not apply more than 4.4 lb/A (4 lb ai/A) per calendar year. x Do not make more than one application per calendar year. x Do not harvest crop for 21 days following application o except apples have a pre- harvest interval of 150 days. x 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 Caliber 90 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.

-22- STONE FRUIT Apply Princep Caliber 90 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 Rate 1 (lb/A) Application Timing Restrictions Cherry, Sweet Cherry, Tart Peach Apricot Nectarine2 Plum Plumcot Prune (fresh) 2.2-4.4 Spring or Fall x Do not apply more than 4.4 lb/A (4 lba./A) per calendar year. x Do not make more than one application per calendar year. x Do not apply more than 2.2 lb/A (2 lb ai/A) per calendar year to nectarines. x Do not apply more than 2.2 lb/A (2 lb ai/A) per calendar year to peaches grown in California. x Do not harvest crop for 21 days following application. x Do not apply to plums, apricots, plumcots or prunes (fresh) in California. x Use on sweet cherry and plum is restricted to states east of the Mississippi River and the state of Missouri. x Applications made by mechanically pressurized handguns are restricted to spot treatment onl y. 1Rates are based on a broadcast treatment acre. For band applications, reduce the broadcast rate of Princep Caliber 90 and water per acre in proportion to the area actually sprayed. 2Use is 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 following application.

-23- STRAWBERRY(OR AND WA ONLY) Apply Princep Caliber 90 to control or suppress the weeds listed in Table 1. Refer to Table 2 for a list of potential tank mixtures. Crop Rate(lb/A) Application Timing Restrictions Strawberry 1.1 x Fall after harvest1 x Spring during crop dormancy x Do not apply more than 1.1 lb/A (1 lb ai/A) per calendar year. x Do not make more than one application per calendar year. x Do not apply within 4 months after transplanting. x 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 clothin g. 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. TREE NUTS Apply Princep Caliber 90 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 Rate 1 (lb/A) Application Timing Restrictions Almond Pecan Walnut 1.1-2.2 Spring or Fall (See “Precautions” for orchard establishment interval before application) x Do not apply more than 2.2 lb/A (2 lb ai/A) per calendar year. x Do not make more than one application per calendar year. x Do not treat the Mission variety of almonds. x Do not apply to almond trees propagated on plum rootstocks. x Do not harvest crop for 30 days followin g application.

-24- x Do not use on pecans west of the Pecos River in TX or in AZ, CA or NM. x 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 Caliber 90 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 plant almond into treated soil for 12 months after application. Crop2 Rate1 (lb/A) Application Timing Restrictions Beech Nut Brazil Nut Butternut Cashew Chestnut Chinquapin Filbert/Hazelnut Hickory Nut Macadamia Nut 2.2-4.4 x Spring x Fall x Spring and Fall (See “Precautions” for orchard establishment interval before application) x Do not apply more than 4.4 lb/A (4 lb ai/A) per calendar year. x Do not make more than two applications per calendar year. x Allow a minimum of 120 days between applications. x Do not harvest crop for 30 days following application. x Do not use on Beech Nut, Brazil Nut, Butternut, Cashew, Chestnut, Chinquapin, or Hickory Nut in the state of California. x Applications made by mechanically pressurized handguns are restricted to spot treatment only. x Do not apply when nuts are on the ground during the harvest period, as ille gal residues may result. 1Rates are based on a broadcast treatment acre. For band applications, reduce the broadcast rate of Princep Caliber 90 and water per acre in proportion to the area actually sprayed. 2Do not apply when nuts are on the ground during harvest period. Precautions to reduce filbert, macadamia nut, pecan and walnut crop injury risk:
5. Apply only to orchards where trees have been established 36 months or more.
6. Avoid use on sand, sandy loam or loamy sand soils.
7. Immediately following application, limit irrigation to ½ inch.

-25- TANK MIXTURES FOR PERENNIAL FRUIT AND NUT CROPS Princep Caliber 90 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 Caliber 90 Tank Mixtures for Weed Control in Perennial Crops Tank Mix Partner 1 Directions Gramoxone® brands that are registered for use on crops listed on this label x Apply this tank mixture for control of emerged annual weeds at the time of application. x This combination is also effective for top kill and suppression of perennial weeds. x This mixture will provide residual control or suppression of the weeds listed in Table 1. x 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 x Apply this tank mixture for control of existing annual weeds at the time of application. x This combination is also effective for top control or suppression of perennial weeds. x This mixture will provide residual control or suppression of the weeds listed in Table 1. x 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 x Use this mixture for improved residual control of weeds such as clover, cutleaf evening-primrose, dandelion, henbit, horseweed (marestail), lambsquarters, and puncturevine. x Keep this tank mixture from contacting foliage, fruits and stems during application. x The tank mixture of Princep Caliber 90 + 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 x Use this mixture for additional residual weed control. x The tank mixture of Princep 4L + Surflan or other solo oryzalin brands can also be applied with solo glyphosate brands or Gramoxone brands.

-26- Tank Mix Partner1 Directions on crops listed on this label Rely® or other solo glufosinate brands that are registered for use on crops listed on this label x Apply this tank mixture for control of existing annual weeds at the time of application. x This combination is also effective for top control or suppression of perennial weeds. x 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. CORN (FIELD, POP AND SWEET) Apply a maximum of 2.2 lb Princep Caliber 90/A (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 lbs. a.i./A per calendar year. Apply a maximum of 1.77 lb Princep Caliber 90/A (1.6 lb ai/A) as a single preemergence application on highly erodible soils if <30% of the soil is covered with plant residues. 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 solutions or complete fluid fertilizers may replace all or part of the water as a carrier in the spray. Determine the physical compatibility of this product with fertilizer before use. Refer to the Product Information section of this label for a compatibility test. Do not apply after corn has emerged, as there is danger of liquid fertilizers causing crop injury. Preemergence: Apply before weeds and corn emerge. Use the specified rate as stated above. Preplant: Apply in the spring at the specified rate as stated above. If soil is tilled or worked after application, avoid deep incorporation. Best results will be obtained when this product is applied within 2 weeks before planting. Under dry weather conditions, preplant applications may give better weed control. If weeds develop, particularly under relatively dry conditions, a shallow cultivation will generally result in better weed control.

-27- 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 1.1 lb/A of Princep Caliber 90 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 Caliber 90 is used in the fall corn weed control program, do not exceed 1.67 lb of Princep Caliber 90 preemergence in the spring. Restrictions:(1) Do not apply more than 2.77 lb/A Princep Caliber 90 to corn per calendar year. (2) Do not rotate to 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 preplant incorporated 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 after an application, or injury may occur. (7) Applications made to sweet corn by mechanically pressurized handguns are restricted to spot treatment only. Precautions: (1) After 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 this product to control weeds in corn only when corn is to follow corn or when a crop of untreated corn is to precede another rotational crop. (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. Tank Mixtures on Corn AAtrex® or other solo atrazine-containing products: Use this product 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 products containing either active 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. Also refer to the AAtrex or other solo atrazine containing product label and the Corn section of this label for precautions and restrictions.

-28- 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 this product to the spray tank, mix thoroughly with water, and then add Gramoxone brandsand a nonionic surfactant. Provide constant agitation during mixing and application to keep the mixture in suspension. Apply a maximum of 1.77 lb Princep Caliber 90/A (1.6 lb ai/A) as a single preemergence application on highly erodible soils if <30% of the soil is covered with plant residues. Apply up to 2.2 lb of this product plus the specified labeled rate of the Gramoxonebrand 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 Caliber 90 and the Gramoxone brand labels. NURSERIES, CHRISTMAS TREE PLANTINGS Nurseries Apply 2.2-3.3 lb of Princep Caliber 90 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 Caliber 90. 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 3.3 lb of Princep Caliber 90 (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. Christmas Tree Plantings Remove or control weed growth before Princep Caliber 90 application. Apply 2.2-4.4 pounds of Princep Caliber 90 per acre after transplanting. Use the same rate for annual maintenance applications. For quackgrass control, apply 4.4 lb/A of Princep Caliber 90 (4 lb ai/A) in the fall or apply a split application of 2.2 lb/A Princep Caliber 90 (2 lb ai/A) in the fall plus 2.2 lb/A Princep Caliber 90 (2 lb ai/A) in early spring, after quackgrass begins growth.

-29- 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 Caliber 90. Restrictions for use in Christmas Trees :

1. Do not apply more than 4.4 lb of Princep Caliber 90 (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 or tree injury:
4. Do not use Princep Caliber 90 on seedbeds or cuttingbeds.
5. 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 tree transplants less than 2 years of age.
6. Do not use until soil is firmly settled around roots. Table 3. Trees and shrubs that can be treated with Princep Caliber 90 CONIFERS Arborvitae Austrian pine Bishop pine Knobcone pine Lodgepole pine (shore pine) Monterey pine Mugho pine Red pine (Norway pine) Scotch pine White pine Blue spruce Norway spruce Red spruce White spruce Balsam fir Douglas fir Fraser fir White fir Hemlock Juniper Red cedar White cedar Yew (Taxus spp.)

-30- Princep Caliber 90 Plus Surflan or other solo oryzalin brands on Christmas Trees: Use this tank mix for additional preemergence control of weeds listed on this label and 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 Caliber 90 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. 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 Store in a dry place. 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

-31- 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 Container Handling [less than or equal to 50 pounds] 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 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 [bags] Non-refillable container. Do not reuse or refill this container. Completely empty bag into application equipment. Then offer for recycling if available or dispose of empty bag in a sanitary landfill, or by incineration, or by other procedures approved by state and local authorities. Container Handling [fiber drums with liners] Non-refillable container. Do not reuse or refill this container. Completely empty liner by shaking and tapping sides and bottom to loosen clinging particles. Empty residue into application equipment. Then offer for recycling if available or dispose of liner in a sanitary landfill, or by incineration, or by other procedures approved by state and local authorities. If drum is contaminated and cannot be reused, dispose of it in the manner required for its liner. 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.

-32- AAtrex®, AAtrex® Nine-O®, Gramoxone®, Pennant Magnum®, Princep® Caliber 90®, and the Syngenta logo are trademarks of a Syngenta Group Company Compex® trademark of KALO Agricultural Chemicals, Inc. Rely® trademark of Bayer CropScience LP Solicam® is a trademark of Tessenderlo Kerley, Inc. Surflan® trademark of Dow AgroSciences Unite® trademark of HACO, Inc. Viton® is a trademark of The Chemours Company FC, LLC. X-77® trademark of Loveland Industries, Inc. For non-emergency (e.g., current product information), call Syngenta Crop Protection at 1-800-334-9481. ©20XX Syngenta Manufactured for: Syngenta Crop Protection, LLC P. O. Box 18300 Greensboro, North Carolina 27419-8300 PRINCEP CAL 90 603 MAS 1222 NOTIF.FEB2023-HI - di – 2/14/2023 000100.00603.20230215.PRINCEP_CAL_90.NOTIF.FEB2023-HI