# DUPONT BASIS HERBICIDE - EPA Reg No: **352-571** - Registrant: CORTEVA AGRISCIENCE, LLC - Signal word: Caution - Active ingredients: Thifensulfuron (25%); Rimsulfuron (50%) - Label accepted: 2010-06-29 - Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000352-00571-20100629.pdf --- UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Washington, D.C. 20460 Tim McPherson E.!. du Pont de Nemours and Company 1007 Market Street Wilmington, DE 19898 OFFICE OF CHEMICAL SAFETY AND POLLUTION PREVENTION JUN 2 9 2010 Subject: Label Amendment (crop rotational intervals, container disposal) DuPont Basis Herbicide EPA Reg. No. 352-571 Application Dated June 2, 2010 . Dear Mr. McPherson: The labeling referred to above, submitted in connection with registration under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), as amended, is acceptable, provided you make the following changes: 1. Change the heading from "Inert Ingredients" to "Other Ingredients". 2. On the front panel, add headings for "EPA Est. No. _" and "Net Contents: __ ". 3. Change the Hazards to Humans and Domestic Animals statement to "Causes moderate eye irritation. " 4. Change the heading to "PERSONAL PROTECTIVE EQUIPMENT (PPE)". 5. Change the User Safety Requirements phrase to "If no such instructions for washables exist," 6. Change the User Safety Recommendations phrase to "Remove clothinglPPE". 7. Change the Environmental Hazards sentence to "Do not contaminate water when cleaning equipment or disposing of equipment washwaters or rinsate." 8. Change the heading from "GENERAL INFORMATION" to "PRODUCT INFORMATION" . 9. On pages 3 & 10, change the heading from "IMPORTANT PRECAUTIONS" to "IMPORTANT RESTRICTIONS AND PRECAUTIONS". Page 1 <:>f2 Page 2 of2 EPA Reg. No. 352-571 10. On page 8, change both instances ofthe statement to "The following rotational intervals must be observed when using BASIS at ... " 11. Change the Pesticide Disposal sentence to "Wastes resulting from the use of this product must be disposed of on site or at an approved waste disposal facility." A stamped copy of your label is enclosed for your records. This label supercedes all previously accepted labels. You must submit one (1) copy of the final printed label before you release the product for shipment. Products shipped after eighteen (18) months from the date of this letter or the next printing of the label, whichever occurs first, must bear the new revised label. If these conditions are not complied with, the registration will be subject to cancellation in accordance with FIFRA §6( e). Your release for shipment of the product constitutes acceptance of these conditions. Sincerely, Jim Tompkins Product~anager25 Herbicide Branch Registration Division (7505P) DuPont™ Basis® herbicide DRAFT LABEL~~: .. :: .. .. . •• • ••••• • • •••••• • •••• • • •••• , , Table of Contents Page Precautionary Statements ................. 1 Directions For Use ...................... 2 General Information ..................... 2 Preemergence & Burndown Applications in the Fall . . . . . . . . . . . . . . . . . .. 2 Rate ................................. 2 Adjuvants. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Tank Mix Applications . . . . . . . . . . . . . . . . .. 2 Application Timing and Weeds Controlled .. 2 Important Precautions . . . . . . . . . . . . . . . . . .. 3 Early Preplant, Preemergence, and Burndown Applications in the Spring ....... 3 Rate ................................. 3 Adjuvants. . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3 Tank Mixes ........................... 3 Weeds Controlled ...................... 3 Residual Activity . . . . . . . . . . . . . . . . . . . . . .. 4 Sequential Applications ................. 4 Application Equipment . . . . . . . . . . . . . . . . .. 4 Mixing Instructions . . . . . . . . . . . . . . . . . . . .. 4 Postemergence Applications . . . . . . . . . . . . . .. 5 Timing to Crop ........................ 5 Timing to Weeds . . . . . . . . . . . . . . . . . . . . . .. 5 Rate ................................. 5 Spray Adjuvants ....................... 5 Tank Mixes ........................... 6 Mixing Instructions . . . . . . . . . . . . . . . . . . . .. 7 Chemigation .......................... 7 Cultivation . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7 Environmental Conditions and Biological Activity ..................... 7 Sequential DuPont™ ACCENT® Applications . . . . . . . . . . . . . . . . . . . . . . . .. 8 Soil Insecticide Interactions ................ 8 Crop Rotation .......................... 8 Application Information ................... 8 Broadcast .............................. 8 Band .................................. 9 Aerial ................................. 9 Sprayer Preparation/Cleanup ............. 9 Spray Drift Management ............• ~ ~ : ~ Resistance ............... :~~:~: ..... ~~ 1(1 • • •• • Important Precautions ...... ~ .... ~ . . . . . .. 10 Storage and Disposal . . . . : .. ~ ~ : ~ ~ : . . . . . .. 11 Notice of Warranty .......... :H ~ ...... ~.J.eAo ••••• • ••• • • •• • ••••• • • •••••• • •••• • • •••• C[{Jpn~ DuPont™ herbicide For use in Field Corn Active Ingredient Rimsulfuron N( (4,6-dimethoxypyrimidin-2 -yl) aminocarbonyl)-3 -( ethylsulfonyl)-2- pyridinesulfonamide Thifensulfuron methyl Methyl 3-[ [[{ (4-methoxy-6-methyl-1 ,3,5- triazin-2-yl)amino lcarbonylJamino 1 suifonyI1-2-thiophenecarboxylate Inert Ingredients TOTAL EPA Reg. No. 352-571 By weight 50% 25% 25% 100% KEEP OUT OF REACH OF CHILDREN CAUTION FIRST AID IF IN EYES: Hold eye open and rinse slowly and gently with water for 15-20 minutes. Remove contact lenses, if present, after the first 5 minutes, then continue rinsing eye. Call a poison control center or doctor for treatment advice. IF ON SKIN OR CLOTHING: Take off contaminated clothing. Rinse skin immediately with plenty of water for 15-20 minutes. Call a poison control center or doctor for treatment advice. IF INHALED: Move person to fresh air. If person is not breathing, call 911 or an ambulance, then give artificial respiration, preferably by mouth-to-mouth, if possible. Call a poison control center or doctor for further treatment advice. IF SWALLOWED: No specific intervention is indicated as the compound is not likely to be hazardous by ingestion. However, consult a poison control center or doctor if necessary. 1 ACCEPTED with COMMENTS in EPA Letter Dllted Under the Federal Insecticide, Fungicide, and Rodenticide Act as amended, for the pesticide registered IUlder EPA Reg. No. 35.Q -Sci FIRST AID (cont'd) Have the product container or label with you when calling a poison control center or doctor, or going for treatment. You may also contact 1-800-441-3637 for emergency medical treatment information. PRECAUTIONARY STATEMENTS HAZARDS TO HUMANS AND DOMESTIC ANIMALS Caution! Causes eye irritation. Harmful if absorbed through skin. Avoid contact with skin, eyes or clothing. Avoid breathing dust or spray mist. PERSONAL PROTECTIVE EQUIPMENT Some of the materials that are chemical resistant to this product are listed below. If you want more options follow the instructions for category A on an EPA chemical­ resistant category selection chart. Applicators and other handlers must wear: Long-sleeved shirt and long pants. Chemical Resistant Gloves Category A (such as butyl rubber, natural rubber, neoprene rubber or nitrile rubber), all2!14 mils. Shoes plus socks. 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. USER SAFETY RECOMMENDATIONS USERS SHOULD: Wash hands before eatinl!w •• : •• drinking, chewing gum, using t~~~<1 §r using f11\:: • toilet. Remove clothing immedi¥el~if"esticide gets inside. Then wash thoroughly ~~~~t.OJl clean clothing. : : . • ENVIRONMENTA~"JaARDS·· •• • Do not apply directly to water, ort~ Ydhs wher~surf~e water is present, or to intertidal areas below the~ta1I~gh water mark. Do not contaminate water by cleaniJe~ (i)~ equipment or disposal of wastes. • •••• • .J 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 112 inch) 5 to 7 days after application will be required for herbicide activation and best residual activity. For maximum duration of "in-season" residual control, apply BASIS® or BASIS® tank mixes preemergence, at-planting, or up to 7 days before planting. Residual control or suppression in soils with 1-3.5% organic matter Barnyardgrass Carpetweed* Cocklebur* Crabgrass, large* Foxtail, (giant, green, yellow) Jinisonweed* Kochia Larnbsquarters Morningglory, ivyleaf* Nightshade, (black*, hairy*) (*) suppression only Palmer arnaranth* Panicum, fall* Pigweed, (prostrate, redroot, smooth) Purslane,common Ragweed,common* Russian thistle, seedling Smartweed, P A * Velvetleaf* SEQUENTIAL APPLICATIONS DuPont™ ACCENT®, ACCENT® Q, DuPont™ RESOLVE® Q, DuPont™ STEADFAST® or STEADFAST® Q For season-long control of grass and broadleaf weeds, a sequential application of ACCENT® and/or a broadleaf herbicide may be needed. Make applications of ACCENT® 14 or more days after the BASIS® application. Refer to the ACCENT® label for product use information. STEADFAST® Q or RESOL VE® Q may be used as a sequential application in a planned postemergence weed control program in corn following application of a reduced rate of BASIS®. Apply 0.33 to 0.62 ounces ofBASIS® preemergence 4 to corn and allow at least 3 weeks before making sequential applications of STEADFAST® Q, RESOL VE® Q or STEADFAST® at the proper timing for weeds and corn. Use the higher rates of BASIS® on heavier soil types or where weed pressures are expected to be heavy. Make sequential applications after the corn has reached the 2- collar stage but before the corn exceeds the maximum application height listed on the respective product labels. Crop injury may result from applications of STEADF AST® Q, RESOLVE® Q or STEADFAST® made to plants under stress from prior herbicide application. Refer to the STEADFAST® Q, RESOL VE® Q or STEADFAST® labels for product use information. APPLICATION EQUIPMENT AND SPRAY VOLUMES Apply uniformly by ground equipment using a properly calibrated fixed boom sprayer with a minimum of 10 gallons per acre spray volume. Use a minimum of 15 gallons for best performance. Select a spray nozzle, spray volume, and spray pressure configuration to deliver uniform spray coverage onto weeds. Heavy crop residues may reduce bumdown control of emerged weeds if residues impede spray coverage. Higher spray volumes and pressures can improve burndown control in heavy crop residue situations. MIXING INSTRUCTIONS BASIS® may be mixed with water or pre-slurried in water and added to liquid fertilizer for application. When using liquid fertilizer as the carrier, always pre-slurry BASIS® in water before adding fertilizer solutions. Add the BASIS® slurry to the final complete liquid fertilizer mixture--Do not add BASIS® during the fertilizer mixing process. Always use good agitation while adding the BASIS® slurry to liquid fertilizers and maintain good agitation until sprayed. When using liquid fertilizer as the carrier, conduct a compatibility test with all components prior to mixing. POSTEMERGENCE APPLICATIONS ••••• • • • • ••••• •••• • •• •••• 9 • • •••••• • •••• • • •••• TIMING TO CROP STAGE TIMING TO WEEDS Apply BASIS®when grasses are young and actively growing, but before they exceed the size listed in the table below. Applications made to weeds at growth stages greater than those listed below may result in incomplete control. Grass competition due to incomplete control may reduce yields. Grasses Maximum Height (Inches) Barnyardgrass 2" Crabgrass, large <112" Foxtails bristly 2" giant 2" green 2" yellow 2" Panicum, fall 2" Shattercane 4" Woolly cU12~ass* I" Wild oats <3 leaf Broadleaves** Lambsguarters, common 3" Mustard, wild 3" Pigweed, redroot 3" Smartweed, annual 3" Sunflower, wild 3" Velvetleaf 3" * Requires the use of crop oil concentrate. ** Applications to broadleaf weeds in the cotyledon stage may result in less than satisfactory control. Broadleaf weeds that emerge after application may not be controllect by BASIS®. A properly timed cultivation or follow-up application of a broadleaf herbicide may be required. RATE SPRAY ADJUVANTS Applications of BASIS® must include either a crop oil concentrate or a nonionic surfactant. In addition, an ammonium nitrogen fertilizer must be used. If another herbicide is tank mixed with BASIS®, select adjuvants authorized for use with both products. Products must contain only EPA-exempt ingredients (40 CFR 1001). 5 Petroleum Crop Oil Concentrate (COC) or Modified Seed Oil (MSO) • Apply at 1 % v/v (1 gal per 100 gal spray solution) or 2% under arid conditions. • Oil adjuvants must contain at least 80% high quality, petroleum (mineral) or modified vegetable seed oil with at . least 15% surfactant emulsifiers. Nonionic Surfactant (NIS) • Apply at 0.25% v/v (1 qt per 100 gal spray solution) or 0.5% under arid conditions. • Surfactant products must contain at least 60% nonionic surfactant with a hydropbilic/lipopbilic balance (HLB) greater than 12. Ammonium Nitrogen Fertilizer • Use 2 qtlacre of a high-quality urea ammonium nitrate (VAN), such as 28%N or 32%N, or 2lb/acre of a spray-grade ammonium sulfate (AMS). Use 4 qtlacre UAN or 4lb/acre AMS under arid conditions. . Special Adjuvant Types • Combination adjuvant products may be used at doses that provide the required amount of NIS, COC, MSO and/or ammonium nitrogen fertilizer. Consult product literature for use rates and restrictions. • In addition to the adjuvants specified above, other adjuvant types may be used if they provide the same functionality and . have been evaluated and approved by DuPont Product Management. Consult separate DuPont technical bulletins for detailed information before using adjuvant types not specified on this label. TANK MIX APPLICATIONS For Additional Control of Broadleaf Weeds BASIS® may be tank mixed with the herbicides below for additional control of broadleaf weeds. See the tank mix partner label for weeds controlled, precautions, use restrictions and crop rotation information. Atrazine 90 DF "Callisto" ''Hornet'' WDG Rate/A 1I2-11b Adjuvant + Nitrogen Fertilizer. ••• • •• :··:":COC·· · 2-30z :. :COC* • 1.25 - 2.0 oz. • ••••• COC • • • •••• • • •••••• • •••• • • •••• Rates listed are for the specific products noted in the table. If other brands or fonnulations are used, rates of active ingredients should be adjusted to correspond to the products indicated. Fonnulations of products other than those listed may not have been tested with DuPont™ BASIS®. Check with the manufacturer for infonnation on tank mix compatibility prior to using (see TANK MIX COMPATIBILITY TESTING). ADDITIONAL INSTRUCTIONS AND/OR INSTRUCTIONS FOR SPECIFIC WEED PROBLEMS For Additional Control of Grass Weeds BASIS® herbicide may be tank mixed with DuPont™ ACCENT® herbicide for early postemergence control of emerged grasses. Apply .33 oz BASIS® + .25 oz ACCENT® per acre alone or in combination with other broadleaf herbicides listed on this label. If a sequential application of ACCENT® is applied, do not apply more than I oz ACCENT® per acre per season. Add crop oil concentrate and ammonium nitrogen fertilizer adjuvants. GRASSES CONTROLLED Maximum Weed Height Grasses At Application (inches) Foxtails, (bristly, giant, green) 3 yellow 2 Bamyardgrass 3 Crabgrass, large** I Panicum, fall 3 Johnsongrass, seedling* 8 Shattercane* 6 Sandbur, field 2 Wild proso millet* 2 Wild oats 2 * Controls emerged plants only. Subsequent flushes may require sequential application of ACCENT® herbicide. ** Large crabgrass will be controlled only if size is "mouse ear" (I leaf emerging) at application. For Additional Control of Crabgrass and Later Emerging Grasses BASIS® may be tank mixed with 213 to full labeled rates of preemergence grass herbicides labeled for early postemergence application tp field com (such as DuPont™ CINCH® brand products or DuPont™ BREAKFREE® brand products) for increased residual activity oflater-emerging flushes of grasses such as smooth and large crabgrass. Application must be made before the crabgrass emerges and before other grass weeds on the BASIS® label exceed their labeled sizes. - Tank mixes of BASIS® and preemergence grass herbicides must be broadcast applied postemergence to field corn before the crop exceeds the heights listed on the preemergence grass herbicide label. 6 Refer to POSTEMERGENCE APPLICATIONS and the preemergence grass herbicide label for complete postemergence application infonnation, rates, and restrictions. Tank Mixtures with Dicamba BASIS® may be tank mixed with 2.0 - 4.0 oz a.i.!acre of dicamba for additional control of many broadleaf weeds. A com plant's predisposition to develop fused tissue emerging from the whorl (rattail) after the V-II stage may increase when a product containing dicamba or growth regulator herbicides is applied to small corn under early stressful conditions. Be aware of this when applying tank mixes with dicamba to small com (V-3 stage or smaller) under stressful conditions. See ENVIRONMENTAL CONDITIONS for a description of these stressful conditions. Tank Mixtures with Insecticides BASIS® may be tank mixed with pyrethroid or carbamate insecticides such as DuPont™ ASANA® XL or DuPont™ LANNATE® insecticides. ADDITIONAL TANK MIX INFORMATION . ed d'l··''''1 th tank . Other than the excepUons not ,an m &OOll!on to e mIX • • partners and rates indicated in the tables ave, BASISP~!y be tank mixed or followed with sequet!I:F Auplicatioos'tlf full or reduced rates of other products registr~l~t-use in field~orn. Weed control and crop response with tank mixtures %l~~ • : • specified in this label are the responsibility of the user and manufacturer of the tank mix product Read and foll~VcftP • applicable use directions, precautions, and limitations"!>t>eMted on the respective product labels and fact sheets. BASIS® may be applied in tank mix combinations with other products provided: • The tank mix product is labeled for the same timing, method of application, adjuvants, and use restrictions as BASIS®. • The tank mixture is not specifically prohibited on the label of the tank mix product. • The tank mix combination is compatible as determined by a 'jar tesf' described in the TANK MIX COMPATIBllJTY JESTING section below. TANK MIX COMPATIBILITY TESTING Perfonn a jar test prior to tank mixing to ensure compatibility of DuPont™ BASIS® and other pesticides. Use a clear glass quart jar with lid and mix the tank mix ingredients in their relative proportions. Invert the jar containing the mixture several times and observe the mixture for approximately 112 hour. If the mixture balls-up, forms flakes, sludges, gels, fonns an oily film or layers, or fonus precipitates, it is not compatible and the tank mix combination should not be used. MIXING INSTRUCTIONS 1. Fill the tank 114 to 113 full of water. 2. While agitating, add the required amount of BASIS®. 3. Continue agitation until the BASIS® is fully dispersed, at least 5 minutes. 4. Once the BASIS® is fully dispersed, maintain agitation and continue filling tank with water. BASIS® should be thoroughly mixed with water before adding any other material. 5. As the tank is filling, add the required spray adjuvants (Crop Oil Concentrate, nonionic surfactant, liquid nitrogen fertilizer, or ammonium sulfate). 6. If the mixture is not continuously agitated, settling will occur. If settling occurs, thoroughly re-agitate before using. 7. Apply BASIS® spray mixture within 24 hours of mixing to avoid product degradation. 8.IfBASIS® and a tank mix partner are to be applied in multiple loads, pre-slurry the BASIS® in clean water prior to adding to the tank. This will prevent the tank mix partner from interfering with the dissolution of the BASIS®. CHEMIGATION BASIS® should not be applied through any type of irrigation system. CULTIVATION For best results, cultivate when BASIS® burndown and residual activity is complete or if new grasses have emerged. The best time for cultivation is usually 10 to 15 days after application. ENVIRONMENTAL CONDITIONS. AND BIOLOGICAL ACTIVITY BASIS® provides the best results when applied to young, actively growing grasses. Applications made during warm, moist conditions (70 OF or more) with adequate soil moisture both before and after application maximize performance. The degree and duration of control depend on spray coverage, weed spectrum, weed size, growing conditions both before and after application, soil moisture, precipitation, and adjuvant selection. 7 Thorough coverage is important for best performance. Excessively cloddy or rough field conditions may reduce coverage and affect performance. Poor grass control or crop injury may result from applications made to plants under stress from: • abnormally hot or cold weather • environmental conditions such as drought, water­ saturated soils, hail damage, or frost • disease, insect or nematode damage • prior herbicide applications, including carryover from a previous year's herbicide application If the corn or grass weeds are under stress, delay application of BASIS® until the stress passes and plants begin to grow again. If the corn stage or grass height exceed the sizes indicated on this label, DuPont™ ACCENT® may be used for grass control. Consult the ACCENT® labels for timing information. Applications of BASIS® to dry, dusty fields may reduce grass control in the wheel tracks. BASIS® rapidly inhibits the growth of susceptible grasses, reducing competition within as little as 6 hours after application. Susceptible grasses are controlled in 7-14 days. BASIS® is rainfast in 4 hours. SEQUENTIAL ACCENT® APPLICATIONS To control grasses under adverse environmental conditions, a sequential application of ACCENT® herbicide may be necessary. An application of ACCENT® may be made 14 or more days after BASIS® applications. Refer to ACCENT® labels for grass species controlled, proper size of weeds, rates and other information. SOIL INSECTICIDE INTERACTIONS BASIS® may interact with certain.iil~~ides p!aw~u~y applied to the crop. Crop response~arils with field oorn type, insecticide used, insecticide :p;.lica~on method, and soil type. • : •• : • • BASIS® may be applied to com previMlily treated~M "Fortress", "Aztec", or "Force" in!lt:tOeru,s or •••• nonorganophosphate (OP) soil ins~iQj;:~ regardles~ of soil type. : ••• :. • • Do not apply BASIS® within 60 days of crop ew~ence where an organophosphate insecticide (such a~ •••• • "Counter") was applied as a treatment since crop injury may occur. Also, allow at least 60 days between a preemergence or pre-plant application of BASIS® and application of an organophosphate insecticide since crop injury may result. • Applications of DuPont™ BASIS® to corn previously treated with "Counter", "Lorsban", or "Thimet" may cause unacceptable crop injury, especially on soils of less than 4% organic matter. CROP ROTATION The following rotational intervals should be observed when using BASIS® at .33 - .s oz.: Crop Interval in Months Alfalfa*t 10 Canolat 10 Cereals, Spring (wheat, oats, barley) 9 Cereals, Winter (wheat, barley, rye) 3 Com (field) Anytime Corn, pop or sweet 10 Cottontt Cucumber 10 Flax 10 Peas 10 Potatoes Anytime RedClovert 10 Rice** 10 Snap beans, dry beans 10 Sorghumt 10 Soybeans***§ 10 STS Soybeans 1 Sugarbeetst 10 Sunflower 10 Sweet potatoesttt 10 Tomato Crops not listed 18 * On sprinkler irrigated fields in Idaho, Utah, and Northern Nevada it is best to use deep fall tillage such as plowing prior to planting alfalfa. Product degradation may be less on furrow irrigated soils and may result in some crop injury. ** For soils with pH less than 6.5. *** Rotational interval is 15 days if using .33 oz per acre. § In the states of AL, AR, GA, KY, LA, MO (bootheel), MS, NC, SC, and 1N the recrop interval is 30 days if using .5 oz per acre or less. t 18 months in the Red River Valley region of ND and MN. In all other areas, the rotation intervals should be extended to 18 months if drought conditions prevail after application and before the rotational crop is planted, unless sprinkler irrigation has been applied and totals greater than 15" during the growing season. tt Except in Oklahoma and Texas west of Route 183, where the rotational interval is 10 months. ttt On soils with pH<6.5 8 The following rotational intervals should be observed when using BASIS® at >.5 - 1 oz.: Crop Interval in Months Cereals, Spring (wheat, oats, barley) 9 Cereals, Winter (wheat, barley, rye) 4 Corn (field) Anytime Corn ( pop or sweet) 10 Potatoes Anytime Snap beans, dry beans 10 Soybeans 10 STS soybeans 4 Sunflowers 10 Tomatoes Crops not listed 18 APPLICATION INFORMATION BROADCAST GROUND APPLICATION Use a minimum of 15 gal of water per acre (GPA) applied at 20-40 PSI for best penormance. Ensure that equipment is set up to avoid applying an excessive rate directly over the rows and into the corn plant whorl. • Use 50 mesh screens with all applications. • Use flat fan nozzles only. Do not use hollow cone, raindrop, whirl chamber or controlled droplet applicator (CDA) nozzles, or air-assisted sprayers. Unacceptable crop injury, excessive spray drift, or poor weed control may result. • Overlaps, or starting, stopping, slowing, and turning while spraying may result in crop injury. • For proper spray coverage, adjust the boom and nozzle height to manufacturers' specifications. BAND APPLICATION • For band applications, use proportionately less spray mixture. • To avoid crop injury, carefully calibrate the band applicator so as not to exceed the labeled rate. • Carefully follow the manufacturer's instructions for flat fan nozzle orientation, distance of nozzles from the crop and weeds, spray volumes, calibration and spray pressure. AERIAL APPLICATION (SEE ALSO SPRAY DRIFT MANAGEMENT) •••••• • •• •••• • •• •• • • Use nozzle types and arrange melts tFIat:will provide optimum spray distribution and IiIlOintQm coverage at a minimum of 5 GP A. : : •• • •• e. • Do not apply during a temperatu,~w~rsion, Vi~winds are gusty, or when conditions favo~oO: coverage jIldlor off-target spray movement. •• • • • •• •••••• • Do not apply by air in the state of New York. • SPRAYER PREPARATION/CLEANUP •••••• •••• It is important that spray equipment is clean and free of previous· pesticide deposits before using BASIS®. Follow the cleanup procedures specified on the label of the product previously sprayed including directions for rinsate disposal. If no cleanup procedure is provided, use the procedure that follows. Immediately following applications ofBASIS®, thoroughly clean all mixing and spray equipment to avoid subsequent crop injury. Note: When applying multiple loads of DuPont™ BASIS®, do not allow empty sprayer or mixing equipment to stand ovemight. Partially fill the empty equipment with fresh water at the end of each day of spraying, flush the boom, hoses and other equipment, and allow to sit ovemight. Cleanup Procedure 1. Drain the tank and thoroughly hose down the interior surfaces. Flush the tank, hoses, and boom with clean water for a minimum of 5 min. 2. Partially fill the tank with clean water and add one gal of household ammonia* (containing 3% active) for every 100 gal of water. Finish filling the tank with water, then flush the cleaning solution through the hoses, boom, and nozzles. Add more water to completely fill the tank and allow to agitate/recirculate for at least 15 min. Again, flush the hoses, boom, and nozzles with the cleaning solution, then drain the tank. 3. Repeat Step 2. 4. Remove the nozzles and screens and clean separately in a bucket containing the cleaning agent and water. 5. Thoroughly rinse the tank with clean water for a minimum of 5 min, flushing the water through the hoses and boom. 6. Rinsate may be applied to areas planted to field com. Do not exceed the labeled concentration of BASIS®. Read and follow all label directions for BASIS®. * Equivalent amounts of an alternate strength ammonia solution or a tank cleaner recommended in the DuPont bulletin "Sulfonylurea Herbicides, A Guide to Equipment Cleanout," may be used. SPRAY DRIFT MANAGEMENT The interaction of many equipment and weather-related factors determines the potential for spray drift. The applicator is responsible for considering all these factors when making application decisions. AVOIDING SPRAY DRlFf IS THE RESPONSIBILITY OF THE APPLICATOR. Importance of Droplet Size The most effective way to reduce drift potential is to apply large droplets (> 150 - 200 microns). The best drift management strategy is to apply the largest droplets that provide sufficient coverage and control. The presence of sensitive species nearby, the environmental conditions, and pest pressure may affect how an applicator balances drift control and coverage. APPLYING LARGER DROPLETS REDUCES DRlFf POTENTIAL, BUT WILL NOT PREVENT DRlFf IF APPLICATIONS ARE MADE IMPROPERLY OR UNDER UNFAVORABLE ENVIRONMENTAL CONDmONS! See Wind, Temperature and Humidity, and Temperature Inversions sections of this label. Controlling Droplet Size - General Techniques • Volume' - Use high flow rate nozzles to apply the highest practical spray volume. Nozzles with higher rated flows produce larger droplets. • Pressure - Use the lower spray pressures recommended for the nozzle. Higher pressure reduces droplet size and does not improve canopy penetration. WHEN IllGHER \1:J;i( \ lP FLOW RATES ARE NEEDED, USE A IllGHER­ CAPACITY NOZZLE INSTEAD OF INCREASING PRESSURE. • Nozzle Type - Use a nozzle type that is designed for the intended application. With most nozzle types, narrower spray angles produce larger droplets. Consider using low­ drift nozzles. Controlling Droplet Size - Aircraft • Number of Nozzles - Use the minimum number of nozzles with the highest flow rate that provide uniform coverage. • Nozzle Orientation - Orienting nozzles so that the spray is emitted backwards, parallel to the airstream will produce larger droplets than other orientations. • Nozzle Type - Solid stream nozzles (such as disc and core with swirl plate removed) oriented straight back produce larger droplets than other nozzle types. • Boom Length - The boom length should not exceed 3/4 ofthe wing or rotor length - longer booms increase drift potential. • Application Height - Application more than 10 ft above the canopy increases the potential for spray drift. Boom Height Setting the boom at the lowest labeled height (if specified) which provides uniform coverage reduces the exposure of droplets to evaporation and wind. For ground equipment, the boom should remain level with the crop and have minimal bounce. Wind Drift potential increases at wind speeds of less than 3 mph (due to inversion potential) or more than 10 mph. However, many factors, including droplet size and equipment type determine drift potential at any given wind speed. AVOID GUSTY OR WINDLESS CONDITIONS. Note: Local terrain can influence wind patterns. Every applicator should be familiar with local wind patterns and how they affect spray drift. Temperature and Humidity When making applications in hot and dry conditions, set up equipment to produce larger droplets to reduce effects of evaporation. Temperature Inversions Drift potential is high during a temperature inversion. Temperature inversions restrict vertical air mixi~~ ~c,b causes small suspended droplets to)-!~close t