crop-chem-docs/corpus/epa_ppls/100-437.md

PRINCEP 80W

• EPA Reg No: 100-437
• Registrant: SYNGENTA CROP PROTECTION, LLC
• Signal word: Caution
• Active ingredients: Simazine (80%)
• Label accepted: 1994-03-23
• Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000100-00437-19940323.pdf

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.-------------- - fM-~ UNITED STATES ENVIRONMENTAL PROTECTION AGENCY WASHINGTON, D.C. 20460 Theresa Kamicker ClBA-GEIGY CORP P,O. BOX 18300 GREENSBORO, NC 27419 OfFICE Of PREVENTION. PESTICIlES AND TOXIC SUBSTANCES Subject: Label Amendment SUbmission of 11119/93 in Response to PR Notice 93-7 EPA Reg. No. 100-437 PRINCEP SOW Dear Registrant: The labeling cited above and submitted in connection with registration under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), as amended, is accepted. A copy of your proposed labeling stamped "ACCEPTED WITH COMMENTS· is enclosed. WHAT THIS ACCEPTANCE MEANS: Based on your certification, the Agency has accepted the labeling changes that are necessary to comply with the Worker Protection Standard (WPS) labeling requirements of 40 CFR part 156, subpart K, described in PR Notices 93-7 and 93-11. Any other labeling changes submitted in connection with this amendment application but not directly related to compliance with the WPS have not been reviewed or accepted by the Agency. If you wish to make suc.!t changes, you must submit a separate amendment application proposing them. If your product is currently suspended. the acceptance of this labeling amendment does not affect the suspension in any way. WHAT YOU NEED TO DO NEXT: Send to EPA one (1) copy of the final printed labeling: • BEFORE selling or distributing any product bearing the final printed labeling AND • WITHIN oce year from date of this acceptance. @ Rae, cll dmtc, 5 til n- --a..c-"*,",'" '(J ---,..,..._

Princep® SOW HERBICIDE WPS Permanent Label (Booklet) For weed control in certain crops and ornamental plantings Active Ingredient: Simazine: 2-ch1oro-4, 6-bis (ethy1amino)-A- :t.. '-~ ..2.8" WI'S Proposed Label 1; Highlighted Copy triazine ................................................ SO% Inert Ingredients: 20% Total: 100% EPA Reg. No. 100-437 EPA Est. No. 100-LA-1 Princep SOW is a wet.tab1e powder. KEEP OUT OF REACH OF CHILDREN. CAUTION See additional precautionary statements and directions for use inside booklet. Ciba-Geigy C1993 Ciba-Geigy Corporation CGA 6L46L 012 ACCEPn:D -COIDIEm-s In F.:PA Loo~ Doled MAR 23 1994

-2- DIRECTIONS FOR USE AND CONDITIONS OF SALE AND WARRANTY IMPORTANT: Read the entire Directions for Use and the Conditions of Sale and Warranty before using this product. If terms are not acceptable, return the unopened product container at once. Conditions of Sale and Warranty The pirections for Use of this product reflect the opinion of experts based on field use and tests. The directions are believed to be reliable and should be followed carefully. However, it is impossible to eliminate all risks inherently associated with use of this product. Crop injury, ineffective­ ness, or other unintended consequences may result because of such factors as weather conditions, presence of other materials, or the manner of use or application all- of which are beyond the control of Ciba-Geigy or the Seller. All such risks shall be assumed by the Buyer. Ciba-Geigy warrants that this product conforms to the chemical description on the label and is reasonably fit for the purposes referred to in the pirections for Use subject to the inherent risks referred to above. Ciba-Geiqy makes no other express or implied warranty of Fitness or Merchantability or any other express or implied warranty. In no case shall Ciba-Geiqy or the Seller be liable for consequential. special. or indirect damages resulting from the use or handling of this product. Ciba-Geigy and the Seller offer this product, and the Buyer and user accept it, subject to the foregoing Conditions of Sale and Warranty, which may be varied only by agreement in writing signed by a ~uly authorized representative of Ciba-Geigy.

-3- 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 re­ quirements specific to your State or Tribe, consult the agency responsible for pesticide regulation. AGRICULTURAL USE REQUIREMENTS Use this product only in accordance with its labeling and with the Worker Protection Standard, 40 CFR part 170. This Standard contains requirements for the protection of agricultural work­ ers on farms, forests, nurseries, and greenhouses, and handlers of agricultural pesticides. It contains requirements for training, decontamination, notification, and emergency assis­ tance. It also contains specific instructions and exceptions pertaining to the statements on this label about personal pro­ tective equipment (PPE) and restricted-entry interval. The requirements in this box only apply to uses of this product that are covered by the Worker Protection Standard. Do not enter or allow worker entry into treated areas during the restricted entry interval (REI) of 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. 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 • Waterproof gloves • Shoes plus socks

-4- NON-AGRICULTURAL USE REQUIREMENTS The requirements ill 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 treated areas without protective clothing until sprays have dried. FAILURE TO FOLLOW THE PIRECTIONS FOR USE AND PRECAUTIONS ON THIS LABEL MAY RESULT IN POOR WEED CONTROL. CROP INJURY. AND/OR ILLEGAL RESIDUES. Do not apply this product through any type of irrigation system. General Information Apply Princep BOW Herbicide before weeds emerge or after removal of weed growth. Princep BOW controls a wide variety of annual broadleaf and grass weeds when used at selective rates in agri­ cultural crops and ornamental plantings. Where a range of application rates is given, use the low rate on coarser textured soil and soil lower in organic matter; use the righ rate on finer textured soil and soil higher in organic matter. To avoid spray drift, do not apply under windy conditions. Avoid spray overlap, as crop injury may result. Since Princep BOW enters weeds mainly through their roots, mois­ ture is needed to move it into he root zone. Very dry soil conditions and lack of rainfall following application may neces­ sitate shallow cultivation. Princep BOW is nonorrosive to equipment, nonflammable, and has low electrical conductivity.

-5- Annual Weeds Controlled alyssum annual bluegrass annual morningglory annual ryegrass barnyardgrass (watergrass) burclover carelessweed carpet weed common chickweed crabgrass (Digitaria spp.) downy brome (cheatgrass) fall panicum fiddleneck filaree fireweed fivehook bassia Flora's paintbrush Florida pus ley foxtails goosegrass groundsel henbit junglerice knawel (German moss) common lambsquarters nightshade pepperweed pigweed pineappleweed prickly lettuce common purslane ragweed rattail fescue redmaids Russian thistle shepherdspurse signalgrass (Brachiaria spp.) silver hairgrass smartweed spanishneedles speedwell tansymustard wild mustard wild oats witchgrass yellow flower pepperweed Following many years of continuous use of this product and chem­ ically related products, biotypes of some of the weeds listed on this label have bee~ reported which cannot be effectively con­ trolled by this and related herbicides. Where this is known or suspected, and weeds controlled by this product are expected to be present along with resistant biotypes, we recommend the use of this product in registered combinations or in sequence with other registered herbicides which are not triazines. If only resistant biotypes are expected to be present, use a registered non-triazine herbicide. Consult with your State Agricultural Extension Service for specific recommendations. Application Procedures Ground application: Use conventional ground sprayers equipped with nozzles that provide accurate and uniform application. Be certain that nozzles are uniformly spaced and the same size. Calibrate sprayer before use and recalibrate at the start of each season and when changing carriers. Unless otherwise spec­ ified, use a minimum of 20 gals. of spray mixture per acre. , •

-6- Use a pump with capacity to: (1) maintain 35-40 psi at nozzles, (2) provide sufficient agitation in tank to Ic.eep mixture in sus­ pension, 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 cir­ culated 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 recircula­ tion line. Use 50-mesh or coarser screens between the pump and boom, and where required, at the nozzles. Check nozzle manufac­ turer's recommendations. For band applications, calculate amount to be applied per acre as follows: band width in inches row width in inches x broadcast rate per acre == amount needed per acre of field ~erial application: Use aerial application only where specified in the use directions. Apply in a minimum of 1 gal. of water for each 1-1.5 lbs. of wettable powder applied per acre. Avoid applications under conditions where uniform coverage cannot be obtained or where excessive spray drift may occur. Avoid application to humans or animals. Flagmen and loaders &hould avoid inhalation of spray mist and prolonged contact with skin. 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 1/4 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 agi­ tation 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 con­ centrate 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.

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." -7- Compatibility test: To determine the tank mix compatibility of Princep BOW with liquid fertilizer, crop oil, spreaders, or rec­ ommended pesticides, use this test method. Nitrogen solutions or complete fluid fertilizers may replace all or part of the water in the spray in alfalfa and corn. Since liquid fertiliz­ ers 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 prob­ lems are more apt to occur. Commercial application equipment may improve compatibility in some instances. Check compati­ bility using this procedure:

1. Add 1 pt. of fertilizer to each of 2 one-qt. glass jars with tight lids.
2. To ~ of the jars, add 1/4 tsp. of a compatibility agent approved for this use (1/4 tsp. is equivalent to 2 pts. per 100 gals. 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 1 herbicide is used, add them separately with dry herbicides first, flowables next, and emulsifiable con­ centrates 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 gals./A: Dry herbiGides: For each pound per acre add 1.5 tea­ spoons 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 gals./A, change the tea­ spoons added to each jar as follows: 25 qals. X no. teaspoons qiven above . -des1red gals. spray volume per acre teaspoons to add to each jar
4. After adding all ingredients, l'ut lids on and tighten. Shake jars vigorously 1 minute. Let the mixtures stand 15 minutes and then look for separation, large flakes, pre­ cipitates, 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 com­ paring 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 are incom­ patible, test the following methods of improving compati­ bility: (A) slurry the dry herbicide(s) in water before addition, or (6) add 1/2 of the compatibility agent to the fertilizer and the other 1/2 to the emulsifiable concen-

.. " -8- trate or flowable herbicide before addition to the mixture. If still incompatible, do not use the materials mixed in the same spray tank. Rotational Crops and Perennial Crop Replanting To avoid crop injury, observe the following precautions: 1) If rotating treated land the year following application, plant only corn, unless otherwise stated in this label. 2) If replanting perennial crops or if rotating land to crops other than corn, do not apply Princep 80W in the year preceding planting these crops. !:.DU t and Nut Crops Apply the spray to the orchard or vineyard floor avoiding con­ tact with fruit, foliage, or stems. Recommended rates are based on broadcast treatment. For band applications or spot applica­ tions around trees in fruit or nut plantings, reduce the broad­ cast rate of Princep 80W and water per acre in proportion to the area actually sprayed. Precautions (All fruit and nut crops); TO avoid crop injury~ (1) Apply only to orchards or groves where trees have been established 12 months or more unless specified differently. (2) Make only 1 application per year. except as noted otherwise. (3) Do not use on gravelly. sand. or loamy sand soil. and ~) Immediately following application. limit overhead sprinkler irrigation to 1/2 inch. Almonds. Peaches. and Nectarines lCA only) Apply 1.25-2.5 lbs. of Princep SOW per treated acre in a 2-4 ft. band on each side of the tree row. Apply before weeds emerge in late fall or early winter. Weeds controlled by 1.25 Ibs. of Princep SOW include burclover, common chickweed, wild mustard, and shepherdspurse. Apply only once per year. Precautions; To avoid crop injury. 1) Do not treat trees estab­ lished in the grove less than 3 years. 2) Do not treat the Mission (TX) variety of almonds. 3) Do not apply to almond trees propagated on plum rootstocks. 4) Do not replant almonds. peaches. or nectarines in treated soil for 12 months after treatment. 5) Do not apply to soil with less than 1% organic matter. 6) Do not treat areas where water will accumulate.

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-9- APples. Pears. and Sour Cherries Apply 2.5-5 lbs./A. Avocados CA and FL only: Apply 2.5-5 lbs./A after final prep. ration of grove. Bluebenl,es and Caneberries (blackberries. boysenberries. logan­ berries. raspberries) Apply 2.5-5 lbs./A in the spring or apply a split application of 2.5 lbs./A in the spring plus 2.5 lbs./A in the fall. Apply in a minimum of 40 gals. of water/A. On plantings less than 6 months old, use 1/2 the above rate. To control quackgrass, apply 5 lbs./A in the fall or split the application applying 2.5 lbs./A in the fall plus 2.5 lbs./A in the spring, when quackgrass is actively growing. Note: Do not apply when fruit is present, or illegal residues may result. Cranberries MA: Apply up to 5 lbs./A either before spring growth begins or in the fall after harvest. Other areas: Apply 2.5 lbs./A before spring growth begins. Filberts Apply 2.5-5 lbs./A in the fall or apply a split application of 2.5 lbs./A in the fall plus 2.5 lbs./A in the spring. Precaution: If trees are planted on a hillside. excessive soil erosion may result from the elimination of weeds.

-10- Note: Do not apply when nuts are on the ground during the har­ vest period, or illegal residues may result. Apply 2.5-6 lbs./A any time between harvest and early spring. Precaution: Do not use in vineyards established less than 3 years. or crQP injury may Qccur. Grapefruit. Lemons. and Oranges AZ (LemQns and Oranges Qnly): Apply a split application of 2 lbs./A in the spring plus 2 lbs./A in the fall. CA (Grapefruit. Lemons. and Oran~: Apply 2.5-5 lbs./A in a single application; or apply 2.5 lbs./A in the fall ana 2.5 lbs./A in the spring. Precaution: Do not use in the Imperial. Coachella. or PalQ Verde valleys. or crop injury may occur. FL (Grapefruit and Oranges only): Apply 5 lbs. of Princep BOW to weed-free soil during the spring and/or fall to control weeds expected to eerge during these periods. Apply prior to emer­ gence of weeds or after emerged weeds have been controlled with a contact herbicide. Use ca~~ion to keep the treatment off the foliage, fruit, or trunk of citrus trees. TX (Grapefruit and Oranges only): Apply 5-6 lbs./A. Precautions (All areas): To avoid crop injury. 1) po not use in nurseries. 2) Do not apply to bedded grapefruit. lemons. or oranges (except for FL grapefruit and oranges. 3) Do not apply to trees under stress from freeze damage for 1 year aftr the freeze. 4) In FL. do not exceed 10 lbs. of Princep BOW during any 1 growing season. Macadamia Nuts Apply 2.5-5 lbs. in 50 gals. of water/A before harvest and just prior to weed emergence. Repeat application as necessary. Note: Do not apply when nuts are on the ground during the har­ vest period, as illegal residues may result. Olives Apply 2.5-5 lbs./A following grove preparation in the fall. Re­ peat annually in midwinter. Peaches. Plums. and Sweet Cherries Apply 2-5 lbs./A. Apply in late fall to early spring prior to weed emer~ence.

-11- Precautions: To avoid crop injury. 11 Peaches: use only in AR. LA. MO. OK. TX. and states east of the Mississippi River. For CA. see specific directions in the Almonds. Peaches. and Nectarines eCA only) section. 2) Plums and sweet cherries: use only in MO and states east of the Mississippi River except TN. Pecans Apply 2.5-5 lbs./A before weeds emerge in the spring. Precautions; To avoid crop injury. 1) DO not use west of the Pecos River in IX or in AZ. CA or NM. 2) DO not make applica­ tions to transplanted trees that have been established less than 2 years in the grove. Note: Do not apply when nuts are on the ground, or illeal residues may result. Do not allow animals to graze treated areas. Strawberries OR and WA: For control of chickweed, groundsel, mustard, and shepherdspurse, apply broadcast 1.25 lbs./A. In fields where overhead irrigation is used to activate this product, apply af­ ter harvest at time of bed renovation. In fields where overhead irrigation is not available, apply during early October through November. Precautions: To avoid crop injury. 1) Make only 1 application per growing season. 2) Do not apply within 4 months af transplanting. Walnuts Apply 2.5-5 lbs./A. Leveling and furrowing operations after ap­ plications will lessen effectiveness of weed control. Note: Do not apply when nuts are on the ground, or illegal residues may result. Princep BOW + Brqmacil BOW for Grapefruit and Oranges eFL Only) Use in grapefruit and oranges in FL for control of balsamapple, black nightshade, carpetweed, crabgrass, cudweed, dayweed, Florida pusley, horseweed, pepperweed, pigweed, poorjoe, rag­ weed, rattlebox, spanishneedles, and sandbur, and for partial control of bermudagrass, bahiagrass, pangolagrass, paragrass, and torpedograss. Apply 5 lbs. of Princep BOW plus 3-4 lbs. of bromacil BOW/A beneath trees in a minimum of 40 gals. of water/A before before or soon after weed growth begins. Use caution to keep the spray off the foliage, fruit, or trunk of citrus trees. Use the lower rates for light weed infestations or all applica­ tions in bedded citrus areas. Use the higher rates for heavy weed infestations only in ridge grown citrus areas. Temporary yellowing of citrus leaves may occur following treatment.

.. ' -12- Precautions; To avoid crop injury. 1) Do not use in nurseries. or where trees are under stress from freeze damage for 1 year after the freeze. 2) Do not vse on soil with less than 1% organic matter or on poorly drained soil. 3) Do not treat trees planted in irrigatioA furrows. 4) Do not treat diseased trees such as those with foot rot. 5) DO not use in groves inter­ planted with other trees or desirable plants. nor in home grape­ fruit or orange plantings. or in areas where roots of other valuable plants or trees may extend. 6) Treated areas may be planted to citrus trees 1 year after application. 7) Do not rotate to other crops within 2 years after application. Note: Apply only once per year and avoid contact with foliage and fruit with spray or mist, or illegal residues may result. Princep SOW + Gramoxonef Extra This tank mix is effective in the following fruit and nut crops for kill of existing vegetation and for residual control of the annual broad1eaf and grass weeds claimed for Princep SOW applied alone. This combination is ~lso effective for top kill and sup­ pression of perennial weeds. In FL, this mixture may be applied in Spring or Fall to emerged weeds. Use this tank mix on these crops; almonds (CA only) apples avocados (CA and FL' On1¥) cherries (sour and sweet ) filberts grapefruit (CA and TX only) grapes lemons (AZ and CA only) macadamia nuts olives oranges 2 peaches 3 pears pecans p1ums 4 walnuts Apply the Princep SOW rate given under the appropriate crop on this label plus 1.5-2.5 qts. Gramoxone Extra* in 50-200 gals. (30-50 gals. for pecans) of water/A to the orchard floor avoid­ ing contact with fruit, foliage, or stems. Add a nonionic sur­ factant, such as X-77e, at 0.5 pt. per lOO gals. of spray. Apply when weeds are succulent and new growth is 1-6 inches tall. For mature woody weeds or difficult to control perennial weeds, re-treat or spot treat with Gramoxone Extra if regrowth occurs. Add Princep SOW to the spray tank first (refer to Mixing Instructions section of this label), then add Gramoxone Extra, and add the surfactant last. Provide constant agitation during mixing and application to keep the mixture in suspension.

-13- Precautions; To avoid crop injury. 1) Apply the tank mix only once per year. 2) Use a shield for young trees or vines. Refer to the Princep BOW and Gramoxone Extra labels for further directions, specific weeds controlled, and precautions and limi­ tations on each crop. lIn avocados in FL, this tank mix also controls balsamapple vine, rattail amaranth, and at the higher rate of each herbi­ cide, it suppresses coral vine. 2In oranges in FL, apply 5 lbs. Princep BOW/A per application during spring or fall. Do not exceed 10 lbs. of Princep BOW during any 1 growing season. 3Limited to AR, CA, LA, MO, OK, TX, and states east of the Mississippi River. As appropriate, refer to Princep BOW sections Almonds. Peaches. and Nectarines ICA only) or Peaches. Plums. and Sweet Cherries for rate of Princep BOW and other information. 4Limited to MO and states east of the Mississippi River except TN. Based on a product containing 1.5 Ibs. Gramoxone Extra cation per gallon. Tank Mixture with Roundup® This tank mixture is effective in grape vineyards and in the following bearing or nonbearing tree crops for control of exist­ ing 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. Use this tank mixture on these crops; almonds* (CA only) apples* avocados* (CA and FL onlr) cherries (sour and sweet) fi1berts** grapefruits* (CA,FL, and TX) grapes* lemons * (AZ and CA) macadamia nuts** oranges* (AZ,CA,FL and TX) peachesl pears pecans** plums*2 walnuts** Use the appropriate rate given elsewhere on this label for Princep-BOW applied alone to the crop being treated. Add to the spray tank 1-5 qts. of Roundup/A depending on weeds present and their growth stage. Also add an agriculturally approved non­ ionic surfactant at 0.5% by volume of spray solution. Apply the mixture in 10-40 gals. of water/A as a postemergence spray to the weeds at the appropriate weed growth stage given on the

-14- Roundup label. Add Princep 80W to the spray tank first, then add Roundup. Pro­ vide constant agitation during mixing and application to keep the mixture in suspension. Refer to Application Procedures sec­ tion of this label for further directions. Precaution: To avoid crap injury. take extreme care to avoid contact of herbicide solution. spray. drift. or mist with foli­ age or green bark of trunk. branches. suckers. fruit. or other parts of trees or vines. Observe precautions on both the Prin­ cep and Roundup labels for each crop inVOlved. Refer to the labels of both herbicides for further directions, specific weeds controlled, precautions, and limitations on each crop. *A1low a minimum of 14 days between last application and har­ vest. **Allow a minimum of 21 days between last application and har- vest of these crops. lLimited 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 eeA only) • 2Plums and sweet cherries: limited to MO and states east of the Mississippi River except TN. Tank Mixture with Solicaml For improved control of such weeds as clover, cutleaf evening primrose, dandelion, henbit, horseweed or marestail, lambsquar­ ters, and puncture vine, apply Princep 80W in tank mixture with Solicam OF. Apply 5 lbs./A of Princep 80W plus 4-5 lbs. of Solicam OF (80% active ingredient) in 20-100 gals. of water/A. Use the same rates in all coarse-textured soils. Do not apply this combina­ tion more than 2 times per year. Princep 80W + Solicam may be applied in tank mixture with Gramoxone Extra or Roundup. Refer to the labels of the respective herbicides in the mixtures when applying tank mixtures. Precautions: 1) Keep Princep + Solicam mixtures from contacting foliage. fruits. and stems of citrus trees during spraying. 2) Do not apply within 12 weeks of citrus harvest.

-15- Princep SOW + Surflan® Use this tank mix in the following crops for preemergence con­ trol 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 SOW rate given under the appropriate crop on this label plus 2.67-5.33 lbs. of Surflan 75W or 2-4 qts. of Surflan A.S. in 20-40 gals. of water/A. Refer to the Surflan 75W or Surflan A.S. label for complete tank mix directions. Observe all precautions and limitations on the Princep SOW and Surflan labels. Field and Forage Crops Corn 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 Princep SOW with fertilizer before use. Refer to the General Information section of this label for a compatibility test. uO 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 appropriate rate in the table below. Preplant: Apply in the spring after plowing at the appropriate rate in the table below. Apply before, during, or after final seedbed preparation. If soil is tilled or worked after applica­ tion, avoid deep incorporation of Princep SOW. Best results will be obtained when Princep SOW is applied within 2 weeks before planting. Under dry weather conditions, preplant appli­ cations may give better weed control. If weeds develop, parti­ cularly under relatively dry conditions, a shallow cUltivation will generally result in better weed control.

Soil Texture Coarse-textured soil: Sand, silt, and loam that is low in organic -matter Medium-textured soil: Soil containing a moderate amount of clay and organic matter Fine-textured soil: Loam that is high in organic matter and clay (including dark prairie soils of Corn Belt) Organic soil: Peat, muck, and high-organic clay -16- Broadcast Rate Per Acre* 2.5 Ibs. 3 Ibs. 3.75 Ibs. 5 Ibs. *For calculation of band treatment rate, see the General Information section. To control quackgrass: Apply 3.75-5 Ibs./A in the fall. Plow 2-3 weeks later, or if erosion is a problem, delay plowing until spring. Precautions: 1) Do not apply more than 5 Ibs. of Princep __ ~ per acre to corn per year. 2) Do not rotate to any crop except corn until the following year. or injury may occur. 3) 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. 4) If more than 3.75 lbs. of Princep 80W/A is used (or eqpiyalent rate in a band). a crop of untreated corn should precede the next rotational crop. 5) DO not apply Princep 80W preplant inco~orated 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 re­ qpired. 6) In the High Plains and Intermountain areas of the West where rainfall is sparse and erratic or where irrigation is required. use Princep 80W 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. 7) In western MN and eastern parts of the Dakotas. NE. and KS. do not plant soybeans follow

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.. -17- ing corn treated with Princep if more than 2.5 lbs. of Princep 80w/A (or equivalent rate in a bald) was applied. or injury may occur. 8) Injury may occur to soybeans planted in north'-central and northwest IA. south-central and southwest MN. northeast NE. southeast SP. and other areas the year following application on soils having a calcareous surface layer. 9) Po not plant sugar beets. tobacco. vegetables (including dry beans). spring-seeded small grains. or small-seeded legumes and grasses the year after Princep 80W application. or injury may occur. Note: Po not graze treated areas, or illegal residues may result. Tank Mixtures on Corn AAtrex®: Use Princep 80W in a preplant or preemergence tank mixture with AAtrex Nine-oe, AAtrex 80W, or AAtrex 4L for con­ trol of many annual weeds, including carpetweed, crabgrass, fall panicum, foxtail, lambsquarters, morningglory, pigweed, ragweed, and velvetleaf. Apply at the rates given below. Use the 1:1 ratio for mest weeds and the 2:1 ratio for expected heavy infestations of crab­ grass and fall panicum .

-lS- Broadcast Rate Per Acre . 1: 1 Ratio 2:1 Ratio Soil Texture Princep SOW AAtrex SOW* Princep SOW AAtrex SOW* Sand, loamy sand, ~.25 lbs. 1.25 lbs. 1.67 lbs. 0.S3 lb. sandy loam Loam, silt loam, silt, clay loam, sandy clay loam, silty clay loam, ~.5 lbs. 1.5 lbs. 2 lbs. 1 lb. sandy clay, or silty clay with low organic matter Loam, silt loam, silt, clay loam, sandy clay loam, silty clay loam, sandy clay, or silty clay with loS lbs. 1.S lbs. 2.4 lbs. 1.2 lbs. medium to high organic matter, and clay (including dark prairie soils of the Corn Belt) *When using AAtrex 4L or AAtrex Nine-O, use equivalent rates. One lb. of AAtrex SOW equals 0.8 qt. of AAtrex 4L or 0.9 lb. of AAtrex' Nine-O.

-19- Refer to the AAtrex label for complete directions. Also refer to the AAtrex label and the Corn section of this label for pre­ cautions and limitations. Eradicane®: Use in a .preplant incorporated tank mixture for control of all weeds claimed on both the Princep SOW and Eradi­ cane labels including partial control (suppression) of shattercane (wild cane). Fluid fertilizer may replace all or part of the water in the spray. Check the physical compatibil­ ity of mixture with fertilizer before use. Refer to the General Information section of this label for a compatibility test pro­ cedure. Use a minimum of 20 gals. of spray volume/A. Refer to the Eradicane label for incorporation directions. Use the higher rate of Princep SOW on fine-textured soil and where heavy broadleaf infestations are expected. Use the higher rate of Eradicane for heavy nutsedge and bermudagrass infestations. For partial control (suppression) of shattercane, broadcast and incorporate immediately before planting 1.25-2.5 lbs. of Princep SOW plus 7.33 pts. of Eradicane 6.7E (or S pts. Eradicane Extra)/A. For control of the other weeds claimed on both labels, broadcast and incorporate 1.25-3.75 lbs. of Princep SOW plus 4.75-7.33 pts. of Eradicane 6.7E (or 5.33-S pts. of Eradi­ cane Extra)/A. Observe all precautions and limitations on the Princep SOW and Eradicane labels. Gramoxone Extra: 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 under General Information. Add Princep SOW to the spray tank, mix thoroughly with water, and then add Gramoxone Extra and a nonionic surfactant. Provide constant agitation during mixing and application to keep the mixture in suspension. Apply 2.5-3.75 lbs. of Princep SOW plus 1.5-2.5 pts. of Gramox­ one Extra* in 20-60 gals. of water/A as a broadcast spray either before or after planting, but before corn emerges. Add a non­ ionic surfactant at the rate of 0.5 pt. per 100 gals. of spray volume. For further information, see general information, caution and warning statements, precautions, and notes on the Princep SOW and the Gramoxone Extra labels. *Based on a product containing 1.5 lbs. Gramox~ne Extra cation per gallon. L..- _____________________________ _

-20- Sutan+®: Use in a preplant incorporated tank mixture for con­ trol of all weeds claimed on both the Princep and Sutan+ labels including partial control (suppression) of shattercane (wild cane). Fluid fertilizer may replace all or part of the water in the spray. Check the physical compatibility of mixture with fertilizer before us~. Refer to the General Information section of this label for a compatibility test procedure. Use a minimum of 20 gals. of spray volume/A. Refer to the Sutan+ label for incorporation directions. Use the higher rate of Princep on fine-textured soil and where heavy broadleaf infestations are expected. For partial control (suppression) of shattercane, broadcast and incorporate immediately before planting 1.25-2.5 lbs. of Princep SOW plus 7.33 pts. of Sutan+ 6.7E/A. For con­ trol of the other weeds claimed on both labels, broadcast and incorporate 1.25-3.75 lbs. of Princep SOW plus 4.75 pts. of Sutan+ 6.7E/A. Observe all precautions and limitations on the Princep SOW and Sutan+ labels. Nurseries. Christmas Tree Plantings. Shelterbelts Nurseries (see list below) Apply 2.5-3.75 lbs. in at least 25 gals. of water/A in fall or spring. Precaution: To avoid plant injury. do not apply for at least 1 year after transplanting. Christmas Tree Plantinqs and Shelterbelts (see list below) Remove weed growth before application. Apply 2.5-5 lbs. in at least 25 gals. of water/A after transplanting. Use the same rate for annual maintenance applications. For quackgrass control apply 5 lbs./A in the fall or apply a split application of 2.5 lbs./A in the fall plus 2.5 lbs./A in early spring, after quackgrass begins growth. Precautions: To avoid tree injury. 1) DO not use Princep SOW on seedbeds or cutting beds. 2) In CA. OR. and WA. do not apply to Christmas trees or shelterbelts sooner than 1 year after trans­ planting. In other areas. do not apply to Christmas trees or shelterbelt transplants less than 2 years of age. 3) Do not use until soil is firmly settled around roots. 4) po not apply more than once a year. except as directed for qyackgrass control. Apply Princep SOW to these species of trees and shrubs, as recommended above:

Conifers arborvitae Austrian pine Bishop pine* knobcone pine* -21- 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.) Deciduous Trees and Woody Ornamentals American elm Siberian elm barberry boxelder bush honeysuckle caragana cotoneaster dogwood eucalyptus holly (11ex spp.) (max. 4 Ibs. /A) honey locust Oregon grape (Mahonia spp.) Pieris spp. (max. 4 lbs./A) red oak Russian olive oleander* palm (2.5 lbs./A)* bottle brush* carob* For California only Pennant® Tank Mix: Princep 80W may be tan~ mixed with Pennant Liquid Herbicide to control weeds in containerized, field and liner grown ornamentals and commercial landscapes. See the Pennant 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. ~lan Tank Mix: On Christmas tree plantings, use this tank mix for preemergence control of weeds listed on this label and the Surflan 75W (or Surflan A.S.) label. Use on field grown conifer species listed on the labels for each herbicide plus grand fir, alpine fir, Engelmann spruce, black spruce, Colorado blue sFruce, Coulter pine, giant redwood, and Veitchi fir. Broadcast the mixture as a directed spray to the soil surface or as an overtop spray using 2.5-5 lbs. of Princep 80W and 2.67-5.33 Ibs. of Surflan 75W (or 2-4 qts. of Surflan A.S.). 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

-------------------------- --~~-- -22- control. Observe all precautions and limitations on the Princep SOW and Surflan labels. ~: 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. Turfgrasses for Sod IF10rida Only) St. Augustinegrass. Centipedegrass. andZoysiagrass Apply 2.5-5 lbs./A, according to soil texture as indicated below. Muck 5 lbs. Old within 2 days after or peat beds lifting of sod New 3-4 days after beds sprigging or plugging Sandy 2.5 lbs. Old within 2 days after soil beds lifting of sod New 7-10 days after beds sprigging or plugging If weeds regrow, apply an additional 2.5 lbs. on muck or peat, or 1.25 lbs. on sandy soil. Precautions: To avoid crop injury. (1) Do not apply within 30 days prior to cutting or lifting. (2) po not apply in combina­ tion with surfactants or other spray additives. (3) Use only on turfgrass reasonably free of infestations of insects. nematodes. and diseases. (4) On newly sprigged turfgrass. temporary slow ing of growth may follow application. Turfgrass for Fairways. Lawns. Sod Production •. and Similar Areas *In states other than FL. For use on turfgrass for sod in FL, see Turfgrasses for Sod IFlorida only) section.

-23- Bermudagrass. Centipedegrass. St. Augustinegrass. and Zoysiagrass Apply Princep aow after September 1 (after October 1 for annual bluegrass) before emergence of winter annual weeds. Princep will control annual bluegrass, burclover, lawn burweed, common and mouseear chickweed, corn speedwell, henbit, hop clover, spurweed, and parsley-piert. Princep 80W will also control these weeds soon after emergence. For control of summer annual weeds listed in the General Information section of this label, apply Princep aow in late winter before the weeds emerge. Apply in a minimum of 15 gals. of water/A. Irrigate with 1/2 inch of water if rainfall does not occur with­ in 10 days after preemergence treatment. Where annual bluegrass is the major weed, use 1.25 Ibs. of Princep aOW/A (0.5 oz. per 1,000 sl. ft.). Use 1.25-2.5 Ibs./A (0.5-1 oz. per 1,000 sq. ft.) for control of other weeds. How­ ever, do not exceed 1.25 Ibs. per acre per treatment on newly sprigged turfgrass or on hybrid bermudagrass such as TiflawIl, Tifway, and Ormond. For control of summer annuals which emerge after the initial application, apply an additional 1.25 lbs./A at least 30 days after the initial application. but not after June 1. However, do not make more than 2 applications per year. Precautions: On newly sprigged turfgrass. hybrid bermudagrass. nondormant bermudagras,. or nondormant zoysiagrass. temporary slowing of growth and yel~~wing may occur following application. To avoid turf injury. (1) Tse only on turfgrass reasonably free of infestations of insects. nematodes. and diseases. (2) Do not use on golf greens. (3) Do not use north of NC (except may be used in the VA Coastal Plains) or west of Highway 281 in TX and OK. (4) Do not use on muck or alkaline soils. (5) Do not apply over the rooting area of trees or ornamentals not listed on this label. (6) Do not seed or overseed with desirable turfgrass within 4 months before or 6 months after treatment. (7) Do apply this product to newly seeded grasses until they have over­ wintered and have a well-developed rhizome system. (al Do not exceed 2.5 Ibs./A within 12 months of seeding grasses. Note: Do not graze or feed turf clippings to animals, or ille­ gal residues may result.

-24- Storage and Disposal Store in a dry place. Do not contaminate water, food, or feed by storage, disposal. Improper disposal of unused pesticide, spray mixture, or rnse 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. Completely empty bag into application equipment. Dispose of empty bag in a sanitary landfill, or by incineration, or if allowed by state and local authorities, by burning. Stay out of smoke from burning bags. 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 procedure and disposal of wastes. In the event of a major spill, fire, or other emergency, call 1-800-888-8372, day or night. Precautionary Statements Hazards to Humans and Domestic Animals CAUTION Causes eye the skin. with eyes, irritation. Harmful Avoid breathing dust skin, or clothing. if inhaled or absorbed through or spray mist. Avoid contact First Aid: If in eyes, flush with plenty of water. attention if irritation persists. If on skin, wash and water. If inhaled, remove victim to fresh air. breathing, give artificial respiration, preferably mouth-to-mouth; get medical attention. Personal Protective Equipment: Applicators and other handlers must wear: • Long-sleeved shirt and long pants • Shoes plus socks Get medical with soap If not I

-25- Follow manufacturer's instructions for cleaning/maintaining PPE. If no such instructions for washables, use detergent and hot water. Keep and wash PPE separately from other laundry. Engineering Control Statements: When handlers use closed systems, enclosed cabs, or aircraft in a manner that meets the requirements listed in the Worker Protection Standard (WPS) for agricultural pesticides [40 CFR l70.240(d) (4-6)], the handler PPE requirements may be reduced or modified as specified in the WPS. Users should: • Wash hands before eating, drinking, chewing gum, using tobacco or using the toilet. • Remove clothing immediately if pesticide gets inside. Then wash thoroughly and put on clean clothing. Environmental Hazards Do not apply directly to water, to areas where surface water is present, or to intertidal areas below the mean high water mark. Do not contaminate water by cleaning of equipment or disposal of wastes. Simazine is a chemical which can travel (seep or leach) through soil and enter ground water which may be used as drink­ ing water. Simazine has been found in ground water as a result of its use as a herbicide. Users of this product are advised not to apply simazine where the water table (ground water) is clo~e to the surface and where the soils are very permeable, i.e., well drained soils such as loamy sands. Users are advised to consult with their local agricultural agencies to obtain information on the location of ground water and the type of soil in their area. AAtrex®, Dual®, Nine-O®, Pennant®, and Princepe trademarks of Ciba-Geigy Corporation Compex® trademark of KALO Agricultural Chemicals, Inc. Eradicane® and Sutan +® trademarks of Stauffer Chemical Company

-26- Gramoxone® trademark of Zeneca Ag Products Roundup® trademark of Monsanto Company Solicam® trademark of Sandoz Ltd. Surf lane trademark of DowElanco Unite® trademark of Hopkins Agricultural Chemical Company X-77® trademark of Chevron Chemical Company 01993 Ciba-Geigy Corporation Ciba Plant Protection Ciba-Geigy Corporation Greensboro, North Carolina 27419

CGA 6L46L 012 -27- Revised Revised Revised Revised Revised Revised Revised Revised Revised Revised Revised Revised Revised Revised [GANNONC.LABELP]PRN80WF5 - 11/15/93 January 7, 1981 November II, 1982 September 20, 1983 January 9, 1984 March 12, 1984 April 2, 1984 September 25, 1985 November I, 1985 August 21, 1986 February 3, 1987 April I, 1987 October 10, 1989 September 13, 1990 January 16, 1992 November IS, 1993 (WPS)