# LIGHTNING HERBICIDE - EPA Reg No: **241-377** - Registrant: BASF AGRICULTURAL SOLUTIONS US LLC - Signal word: Warning - Active ingredients: Imazapyr (17.5%); Imazethapyr (52.5%) - Label accepted: 2022-09-12 - Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000241-00377-20220912.pdf --- UNITED STATES ENVIRONMENTAL PROTECTION AGENCY WASHINGTON, DC 20460 OFFICE OF CHEMICAL SAFETY AND POLLUTION PREVENTION September 12, 2022 Christa Ellers-Kirk Country Regulatory Manager BASF Corporation P.O. Box 13528, 26 David Drive Research Triangle Park, NC 27709 Subject: Registration Review Label Mitigation for Imazethapyr Product Name: LIGHTNING HERBICIDE EPA Registration Number: 241-377 Application Date: 8/5/2020 Decision Number: 569082 Dear Christa Ellers-Kirk: The Agency, in accordance with the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA), as amended, has completed reviewing all the information submitted with your application to support the Registration Review of the above referenced product in connection with the Imazethapyr Interim Decision, and has concluded that your submission is acceptable. The label referred to above, submitted in connection with registration under FIFRA, as amended, is acceptable. 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 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) list 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. A stamped copy of your labeling is enclosed for your records. This labeling supersedes all previously accepted labeling. You must submit one copy of the final printed labeling before you release the product for shipment with the new labeling. In accordance with 40 CFR 152.130(c), you may distribute or sell this product under the previously approved labeling for 12 months from the date of this letter. After 12 months, you may only distribute or sell this product if it bears this new revised labeling or subsequently approved labeling. “To distribute or sell” is defined under FIFRA section 2(gg) and its implementing regulation at 40 CFR 152.3. Page 2 of 2 EPA Reg. No. 241-377 Decision No. 569082 If you have any questions about this letter, please contact Quinn Gavin by phone at 202-566- 2284, or via email at gavin.quinn@epa.gov. Sincerely, Linda Arrington, Branch Chief Risk Management and Implementation Branch 4 Pesticide Re-Evaluation Division Office of Pesticide Programs Enclosure FOR USE ON CLEARFIELD® CORN HYBRIDS ONLY Active Ingredients: imazethapyr: (+)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5- oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridinecarboxylic acid] ................... 52.5% imazapyr: 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5- oxo-1H-imidazol-2-yl]-3-pyridinecarboxylic acid ......................... 17.5% Other Ingredients: .............................................. 30.0% Total: ......................................................... 100.0% One 12.8-oz bottle contains 0.42 pound of imazethapyr and 0.14 pound of imazapyr as the free acid. EPA Reg. No. 241-377 EPA Est. No. KEEP OUT OF REACH OF CHILDREN WARNING/AVISO Si usted no entiende la etiqueta, busque a alguien para que se la explique a usted en detalle. (If you do not understand the label, find someone to explain it to you in detail.) See inside for complete First Aid, Precautionary Statements, Directions For Use, Conditions of Sale and Warranty, and state-specific crop and/or use site restrictions. In case of an emergency endangering life or property involving this product, call day or night 1-800-832-HELP (4357). Net Contents: BASF Corporation 26 Davis Drive, Research Triangle Park, NC 27709 Imazethapyr Group 2 Herbicide Sep 12, 2022 241-377 2 PRECAUTIONARY STATEMENTS HAZARDS TO HUMANS AND DOMESTIC ANIMALS Warning. Causes substantial but temporary eye injury. DO NOT get in eyes, on skin or on clothing. Harmful if swallowed or absorbed through skin. Personal Protective Equipment (PPE) Some materials that are chemical-resistant to this product are made of any waterproof material. Mixers, loaders, applicators, and other handlers must wear: • Long-sleeved shirt and long pants • Shoes plus socks • Goggles or face shield (except for pilots) • Chemical-resistant gloves (except for pilots) See Engineering Controls for additional requirements. Follow manufacturer’s instructions for cleaning and main- taining PPE. If no such instructions for washables exist, use detergent and hot water. Keep and wash PPE sepa- rately from other laundry. Discard clothing and other absorbent materials that have been drenched or heavily contaminated with this product’s concentrate. DO NOT reuse them. Engineering Controls Pilots must use an enclosed cockpit that meets the requirements listed in the Worker Protection Standard (WPS) for agricultural pesticides [40 CFR 170.240(d)(6)]. USER SAFETY RECOMMENDATIONS Users should: • Wash hands with plenty of soap and water before eat- ing, drinking, chewing gum, using tobacco, or using the toilet. • Remove clothing/PPE immediately if pesticide gets inside. Then wash thoroughly and put on clean clothing. • Remove PPE immediately after handling this product. Wash the outside of gloves before removing. As soon as possible, wash thoroughly and change into clean clothing. ENVIRONMENTAL HAZARDS This product is toxic to plants. Drift and runoff may be haz- ardous to plants in water adjacent to treated areas. DO NOT apply directly to water, or to areas where surface water is present, or to intertidal areas below the mean high water mark. DO NOT contaminate water when disposing of equipment washwater or rinsate. See DIRECTIONS FOR USE for additional precautions and requirements. Non-target Organism Advisory Statement This product is toxic to plants and may adversely impact the forage and habitat of nontarget organisms, including pollinators, in areas adjacent to the treated site. Protect the forage and habitat of nontarget organisms by following label directions intended to minimize spray drift. Groundwater Advisory Statement This chemical has properties and characteristics associat- ed with chemicals detected in groundwater. This chemical may leach into groundwater if used in areas where soils are permeable, particularly where the water table is shallow. Surface Water Advisory Statement This product may impact surface water quality due to run- off of rain water. This is especially true for poorly draining soils and soils with shallow groundwater. This product is classified as having high potential for reaching surface water via runoff for several months or more after FIRST AID If in eyes • Hold eyes open and rinse slowly and gently with water for 15 to 20 minutes. • Remove contact lenses, if present, after first 5 minutes; then continue rinsing eyes. • 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 to 20 minutes. • Call a poison control center or doctor for treatment advice. If swallowed • Call a poison control center or doctor immediately for treatment advice. • Have person sip a glass of water if able to swallow. • DO NOT induce vomiting unless told to do so by a poison control center or doctor. • DO NOT give anything by mouth to an unconscious person. HOT LINE NUMBER Have the product container or label with you when calling a poison control center or doctor or going for treatment. You may also contact BASF Corporation for emergency medical treatment information: 1-800-832-HELP (4357). Note to Physician: Probable mucosal damage may contraindicate the use of gastric lavage. 3 application. A level, well-maintained vegetative buffer strip between areas to which this product is applied and sur- face water features such as ponds, streams, and springs will reduce the potential loading of imazethapyr from runoff water and sediment. Runoff of this product will be reduced by avoiding applications when rainfall or irrigation is expected to occur within 48 hours. This product may not be mixed or loaded within 50 feet of any wells (including abandoned wells and drainage wells), sink holes, perennial or intermittent streams and rivers, and natural or impounded lakes or reservoirs. This setback does not apply to properly capped or plugged abandoned wells and does not apply to impervious pad or properly diked mixing/loading areas. Operations that involve mixing, loading, rinsing, or washing of this product into or from pesticide handling or applica- tion equipment or containers within 50 feet 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 equip- ment rinse or washwater, and rainwater 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 complete- ly exclude precipitation from contact with the pad shall have a minimum containment capacity of 100% of the capacity of the largest pesticide container or application equipment on the pad. Containment capacities as described above shall be maintained at all times. The above specific minimum containment capacities DO NOT apply to vehicles when delivering pesticide shipments to the mixing/loading site. States may have in effect addition- al requirements regarding wellhead setbacks and operational containment. DO NOT apply this product through any type of irrigation system. Product must be used in a manner which will prevent back-siphoning in wells, spills or improper disposal of excess pesticide, spray mixtures or rinsate. Physical and Chemical Hazards DO NOT store near oxidizers. DIRECTIONS FOR USE It is a violation of federal law to use this product in a man- ner inconsistent with its labeling. DO NOT apply this product in a way that will contact workers or other per- sons, 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. This labeling must be in the user’s possession during application. Observe all cautions and limitations on this label and on the labels of products used in combination with Lightning ® herbicide. DO NOT use Lightning other than in accordance with the instructions set forth on this label. The use of Lightning not consistent with this label may result in injury to crops. 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 prod- uct 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 48 hours. PPE required for early entry to treated areas that is per- mitted under the Worker Protection Standard and that involves contact with anything that has been treated, such as plants, soil, or water, is: • Coveralls • Shoes plus socks • Chemical-resistant gloves made of any waterproof material • Protective eyewear STORAGE AND DISPOSAL DO NOT contaminate water, food or feed by storage or disposal. Pesticide Storage. Store in a secure, dry, well-ventilated area. Pesticide Disposal. Wastes resulting from the use of this product may be disposed of on site or at an approved waste disposal facility. Container Disposal Nonrefillable Container. DO NOT reuse or refill this container. Triple rinse or pressure rinse container (or equivalent) promptly after emptying; then offer for recy- cling, if available, or reconditioning, if appropriate, or puncture and dispose of in a sanitary landfill, or by inciner- ation, or by other procedures approved by state and local authorities. Triple rinse containers small enough to shake (capacity ≤ 50 pounds) as follows: Empty the remaining contents into application equipment or a mix tank. Fill the container 1/4 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 4 disposal. Drain for 10 seconds after the flow begins to drip. Repeat this procedure two more times. Triple rinse containers too large to shake (capacity > 50 pounds) as follows: Empty the remaining contents into application equipment or a mix tank. Fill the container 1/4 full with water. Replace and tighten closures. Tip container on its side and roll it back and forth, ensuring at least one complete revolution, for 30 seconds. Stand the container on its end and tip it back and forth several times. Turn the container over onto its other end and tip it back and forth several times. Empty the rinsate into application equipment or a mix tank, or store rinsate for later use or disposal. Repeat this procedure two more times. Pressure rinse as follows: Empty the remaining con- tents into application equipment or mix tank. Hold container upside down over application equipment or mix tank, or collect rinsate for later use or disposal. Insert pressure rinsing nozzle in the side of the container and rinse at about 40 PSI for at least 30 seconds. Drain for 10 seconds after the flow begins to drip. In Case of Emergency In case of large-scale spillage regarding this product, call: CHEMTREC 1-800-424-9300 BASF Corporation 1-800-832-HELP (4357) In case of medical emergency regarding this product, call: • Your local doctor for immediate treatment • Your local poison control center (hospital) • BASF Corporation 1-800-832-HELP (4357) SPRAY DRIFT Aerial Applications • DO NOT release spray at a height greater than 10 ft above the ground or vegetative canopy, unless a greater application height is necessary for pilot safety. • For applications prior to the emergence of crops and target weeds, applicators are required to use a coarse or coarser droplet size (ASABE S572.1). • For all other applications, applicators are required to use a medium or coarser droplet size (ASABE S572.1). • Applicators must use 1/2 swath displacement upwind at the downwind edge of the field. • DO NOT apply when wind speeds exceed 15 mph at the application site. If the windspeed is greater than 10 mph, the boom length must be 65% or less of the wingspan for fixed wing aircraft and 75% or less of the rotor diameter for helicopters. Otherwise, the boom length must be 75% or less of the wingspan for fixed- wing aircraft and 90% or less of the rotor diameter for helicopters. • DO NOT apply during temperature inversions. (continued) SPRAY DRIFT Ground Boom Applications • User must only apply with the release height recom- mended by the manufacturer, but no more than 3 feet above the ground or crop canopy unless making a turf, pasture, or rangeland application, in which case appli- cators may apply with a nozzle height no more than 4 feet above the ground. • For applications prior to the emergence of crops and target weeds, applicators are required to use a coarse or coarser droplet size (ASABE S572.1). • For all other applications, applicators are required to use a medium or coarser droplet size (ASABE S572.1). • DO NOT apply when wind speeds exceed 15 miles per hour at the application site. • DO NOT apply during temperature inversions. Boomless Ground Applications • Applicators are required to use a medium or coarser droplet size (ASABE S572.1) for all applications. • DO NOT apply when wind speeds exceed 15 miles per hour at the application site. • DO NOT apply during temperature inversions. SPRAY DRIFT ADVISORIES THE APPLICATOR IS RESPONSIBLE FOR AVOIDING OFF-SITE SPRAY DRIFT. BE AWARE OF NEARBY NONTARGET SITES AND ENVIRONMENTAL CONDITIONS. Importance of Droplet Size An effective way to reduce spray drift is to apply large droplets. Use the largest droplets that provide target pest control. While applying larger droplets will reduce spray drift, the potential for drift will be greater if applications are made improperly or under unfavorable environmental conditions. Controlling Droplet Size – Ground Boom • Volume - Increasing the spray volume so that larger droplets are produced will reduce spray drift. Use the highest practical spray volume for the application. If a greater spray volume is needed, consider using a nozzle with a higher flow rate. • Pressure - Use the lowest spray pressure recommend- ed for the nozzle to produce the target spray volume and droplet size. • Spray Nozzle - Use a spray nozzle that is designed for the intended application. Consider using nozzles designed to reduce drift. Controlling Droplet Size – Aircraft • Adjust Nozzles - Follow nozzle manufacturers’ recom- mendations for setting up nozzles. • Generally, to reduce fine droplets, nozzles should be oriented parallel with the airflow in flight. Boom Height – Ground Boom For ground equipment, the boom should remain level with the crop and have minimal bounce. 5 Boom-less Ground Applications Setting nozzles at the lowest effective height will help to reduce the potential for spray drift. Handheld Technology Applications Take precautions to minimize spray drift. Release Height – Aircraft Higher release heights increase the potential for spray drift. 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. Tem- perature inversions are characterized by increasing temperature with altitude and are common on nights with limited cloud cover and light to no wind. The presence of an inversion can be indicated by ground fog or by the movement of smoke from a ground source or an aircraft smoke generator. Smoke that layers and moves laterally in a concentrated cloud (under low wind conditions) indicates an inversion, while smoke that moves upward and rapidly dissipates indicates good vertical air mixing. Avoid applica- tions during temperature inversions. 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. Mode of Action Lightning® herbicide kills weeds by root and/or foliar uptake and rapid translocation to the growing points. Adequate soil moisture is important for optimum Light- ning activity. When adequate soil moisture is present, Lightning will provide residual control of susceptible ger- minating weeds; activity on established weeds will depend on the weed species and the location of its root system in the soil. Naturally occurring biotypes* of some of the weeds listed on this label may not be effectively controlled by this and/ or other products with the ALS/AHAS enzyme inhibiting mode of action. Other herbicides with the ALS/AHAS enzyme inhibiting mode of action include the imidazolinones (e.g. Pursuit ® herbicide, Scepter® herbicide, Raptor® herbicide‚ etc.), the sulfonylureas (e.g. Accent®, Classic®, Permit®, Steadfast ®, Spirit® herbicides, etc.) the sulfonamides (e.g. Python ® herbicide, etc.) and the pyrimidyl benzoates (e.g. Staple® herbicide, etc.). If naturally occurring biotypes are present in a field which are resistant to this herbicide, Lightning should be tank mixed or applied sequentially with an appropriate registered herbicide having a different mode of action to ensure control. * A weed biotype is a naturally occurring individual within a given species that has a slightly different, but distinct genetic makeup from other plants. WEED RESISTANCE MANAGEMENT Lightning is a Group 2 herbicide. While weed resistance to Group 2 herbicides is common in a number of weed species, these herbicides remain an important component of successful weed control programs. Resistance man- agement should be part of a diversified weed control strategy that integrates multiple options including chemi- cal, cultural, mechanical, and biological control tactics. Cultural control tactics include agronomic practices that improve the competitive ability of the crop via rotation, vari- ety/cultivar selection, precision fertilizer placement and optimum crop planting density. Agronomic practices should also limit the development and spread of weeds by using clean crop seed (e.g., certified seed), preventing crop trait out-crossing, controlling weed influx from field borders, and managing weed seed at harvest/post- harvest to minimize the carryover weed seed-bank into the follow- ing crop. Mechanical control tactics include timely tillage where practical, equipment cleaning to avoid weed spread, and minimizing harvest crop seed losses in the field through close attention to timeliness of harvest, correct setup of harvest equipment, and covering crop seed loads during harvest and transport to avoid dispersing seed. An example of a biological control tactic is field grazing during or after cropping to manage weeds and reduce weed seed production. To aid in the prevention of developing weeds resistant to this product, the following steps should be followed where practical: • Plant into weed-free fields. Start with clean tillage or an effective burndown herbicide program. • Scout fields before herbicide application to ensure herbi- cides and rates will be optimum for the weed species and weed sizes present. • Apply preemergence herbicides that provide soil residual control of broadleaf and grass weeds to reduce early season weed competition and allow for timely in-crop postemergence herbicide applications. • Use tank mixes and sequential applications with other herbicides possessing different sites of action that are also effective on the target weeds. • Follow labeled application rate and weed growth stage specifications. • DO NOT rely on a single herbicide site of action for weed control during the growing season. • Avoid application of herbicides with the same site of action more than twice a season. • Apply full labeled rates of Lightning for the most diffi- cult-to-control weed in the field at the specified time (correct weed size) to minimize weed escapes. 6 • Use recommended adjuvant, adequate spray volume, proper nozzle and pressure (see label) to ensure effective weed coverage for applications. • Control weeds in field borders to prevent weed influx into field. • Scout fields after herbicide application to identify areas where weed control was ineffective and to monitor weed populations for early signs of resistance development. Consider application and environmental factors that may have led to incomplete control. Indicators of suspected herbicide resistance include: (1) failure to control a weed species normally controlled by the herbicide at the dose applied, especially if control is achieved on adjacent weeds; (2) a spreading patch of non-controlled plants of a particular weed species; (3) surviving plants mixed with controlled individuals of the same species. If resistance is suspected, prevent weed seed production in the affect- ed area by applying an alternative herbicide from a different group other than Group 2 or by a mechanical method such as hoeing or tillage. • If a weed population continues to progress after treat- ment with this product, discontinue use of this product. Switch to another management strategy or another her- bicide with a different mode of action. • Control weed escapes with herbicides possessing a dif- ferent site of action or use a mechanical control measure. Weed escapes should not be allowed to repro- duce by seed or to proliferate vegetatively. • Clean tillage, harvesting, and other equipment before moving to a different field to avoid spread of resistant weeds (especially harvest and tillage equipment). • Contact your herbicide supplier and/or your local BASF representative if resistance is suspected. Additionally, users should follow as many of the following herbicide resistance management practices as is practical: • Use a broad spectrum, soil-applied herbicide with site of action other than Group 2 as a foundation in a weed control program. • Utilize sequential applications of herbicides with alterna- tive sites of action. • Rotate the use of this product with non-Group 2 herbicides. • Avoid making more than one application of Lightning ® herbicide and any other Group 2 herbicide within a sin- gle growing season unless mixed with another site of action herbicide with an overlapping spectrum for the difficult-to- control weeds. • Incorporate non-chemical weed control practices, such as mechanical cultivation, crop rotation, cover crops and weed-free crop seeds, as part of an integrated weed control program. • Thoroughly clean plant residues from equipment before and after leaving fields suspected to contain resistant weeds. • Manage weeds in and around fields during and after har- vest to reduce weed seed production. • Contact the local agricultural extension service, BASF representative, ag retailer or crop consultant for further guidance on weed control practices as needed. PRODUCT INFORMATION Apply Lightning only on selected field corn hybrids (CLEARFIELD® corn) warranted by the seed company to possess resistance/tolerance to direct application of cer- tain imidazolinone herbicides. DO NOT apply Lightning to corn hybrids that lack resistance/tolerance to imidazoli- none herbicides. Contact your seed supplier, chemical dealer or BASF to obtain information regarding CLEARFIELD corn hybrids. When applied as directed at the broadcast rate of 1.28 ounces per acre, Lightning will control or reduce competition from the weeds listed in Table 1. NOTE: R = Reduced Competition. DO NOT count cotyledon leaves when determining weed stage of growth. Table 1. Weeds Controlled Broadleaf Weeds POSTEMERGENCE Leaf Stage (up to) Maximum Height (inches) Alligator weed 4 1-3 Anoda, spurred 2 1-2 Artichoke, Jerusalem 8 6-10 Bindweed, field R 1-3 Buckwheat, wild 4 1-3 Buffalobur 4 1-3 Bristly starbur 2 1-2 Carpetweed 4 1-3 Cocklebur, common 8 1-8 Jimsonweed 4 1-3 Knotweed 4 1-3 Kochia (non-ALS resistant) 4 1-3 Lambsquarters, common 4 1-3 Marshelder 4 1-3 Milkweed, honeyvine 4 1-3 Morningglory entireleaf 2 1-2 ivyleaf 4 1-3 pitted 2 1-2 smallflower 4 1-3 tall 4 1-3 Mustard sp. 4 1-3 (continued) 7 Table 1. Weeds Controlled (continued) Broadleaf Weeds POSTEMERGENCE Leaf Stage (up to) Maximum Height (inches) Nightshade black 4 1-3 Eastern black 4 1-3 hairy 4 1-3 Pigweed Palmer 4 1-3 prostrate 8 1-8 redroot 8 1-8 smooth 8 1-8 spiny 8 1-8 Ragweed common R 1-3 giant 4 1-3 Sage, barnyard R 1-3 Sicklepod* 4 1-3 Sida, prickly 4 1-3 Smartweed ladysthumb 4 1-3 Pennsylvania 4 1-3 Spurge prostrate 4 1-3 spotted 4 1-3 Sunflower 4 1-3 Velvetleaf 4 1-3 Venice mallow 4 1-3 Thistle, Canada R 1-3 * Additional applications of other broadleaf herbicides may be necessary to control subsequent flushes of sicklepod. Annual Grass and Sedge Weeds POSTEMERGENCE Leaf Stage (up to) Maximum Height (inches) Barnyardgrass 3 1-3 Crabgrass large 3 1-3 smooth 3 1-3 Cupgrass, woolly 3 1-3 Foxtail giant 6 1-6 green 3 1-3 yellow 3 1-3 Goosegrass 3 1-3 (continued) Table 1. Weeds Controlled (continued) Annual Grass and Sedge Weeds POSTEMERGENCE Leaf Stage (up to) Maximum Height (inches) Johnsongrass seedling 6 1-8 rhizome R 8-16 Millet, wild proso 3 1-3 Nutsedge purple R 1-3 yellow R 1-3 Panicum, fall 3 1-3 Quackgrass 3 1-3 Red rice 3 1-3 Ryegrass, Italian 3 1-6 Sandbur, field 3 2 Shattercane 6 1-8 Signalgrass, broadleaf 4 1-8 Sorghum almum 6 1-3 Volunteer corn (non-CLEARFIELD ® corn) 8 1-12 Wild oat 6 1-8 Witchgrass 3 1-3 Lightning® herbicide is active against many broadleaf and grass weed species. For long-term weed manage- ment, use two herbicides with different modes of action to reduce the potential for weed resistance. Crop Tolerance Crops growing under stressful environmental conditions can exhibit various injury symptoms which may be more pronounced if herbicides are used. Corn plants treated with Lightning may exhibit yellowing on new growth. Such effects occur infrequently and are temporary. Normal growth and appearance should resume within 1 to 2 weeks. Use of Lightning in accordance with label directions is expected to result in normal growth of rotational crops in most situations; however, various environmental and agro- nomic factors make it impossible to eliminate all risks associated with the use of this product and, therefore, rotational crop injury is always possible. Under some con- ditions (such as heavy texture soil, high organic matter, low pH or low rainfall) Lightning may cause injury to subse- quent planted crops. See the ROTATIONAL CROPS section of this label for rotation intervals to sensitive crops. Soil Insecticide Information All soil insecticides registered for use on corn, including labeled banded or in-furrow applications, may be used in combination with Pioneer ® imidazolinone-resistant (IR) corn hybrids and Lightning. 8 BASF recommends that terbufos and phorate in banded applications may be used in combination with Lightning® herbicide on imidazolinone-tolerant (IT) corn hybrids. DO NOT use terbufos when Lightning will be applied to imidazolinone-tolerant corn hybrids. BASF has not tested all hybrids in which the imidazolinone-tolerance trait is claimed and cannot be responsible for factors which are beyond its control, such as growing conditions, environ- mental conditions, grower practices and the specific genetics of each hybrid tolerance to herbicide and insecti- cide applications. Cultivation For maximum weed control, cultivate 7-10 days following Lightning application. This timely cultivation will enhance residual weed control, especially under dry conditions. Cleaning Spray Equipment To avoid injury to sensitive crops, drain and clean applica- tion equipment thoroughly using a strong detergent or commercial sprayer cleaner according to the manufactur- er’s directions and then triple rinse the equipment before and after applying Lightning. Application Instructions Lightning is effective in controlling annual weeds in con- servation tillage as well as in conventional production systems. Apply Lightning as a postemergence treatment to CLEARFIELD ® corn when crop and weeds are actively growing. For optimal weed control, apply Lightning before weeds exceed labeled height. Lightning Application Use Area, Rate and Timing • Apply Lightning at a broadcast rate of 1.28 ounces per acre. At this broadcast rate, one bottle of Lightning will treat 10.0 acres of CLEARFIELD corn. • Lightning can be applied postemergence (including spike stage) on CLEARFIELD corn hybrids. • Lightning must be applied with drop nozzles (i.e. post- directed onto weeds) under the following conditions: if the corn is greater than 20 inches tall or corn has 6 or more leaf collars (V6), whichever is the more restrictive, or if the crop canopy prevents adequate weed coverage. Delaying a Lightning application for 48 hours from the time temperatures increase above 50° F (i.e. after air tem- peratures have remained below 50° F for 10 or more hours) will improve weed control and reduce the potential for crop response. Unusually cool temperatures (50° F or less) reduce photosynthesis and transpiration and thus reduce the uptake and translocation (and effectiveness) of Lightning in weeds. Lightning is rainfast one hour after application. Ground Application Methods and Equipment Uniformly apply with properly calibrated ground equipment in 10 or more gallons of water per acre. A spray pressure of 20 to 40 psi is recommended. DO NOT apply when wind velocity is greater than 15 mph. (See SENSITIVE CROP PRECAUTIONS section for application guidelines near sensitive crops.) To ensure thorough coverage a minimum of 10 gallons of water per acre is recommended when applying Lightning to minimum till or no-till CLEARFIELD corn. Use higher gallonage for fields with dense vegetation or heavy crop residues. Flat-fan nozzle tips are recommended for post- emergence applications. Avoid overlaps when spraying. Aerial Application Methods and Equipment Uniformly apply with properly calibrated aerial equipment in 5 or more gallons of water per acre. Addition of a non- ionic surfactant AND fertilizer solution is required for optimum weed control; apply a nonionic surfactant at the rate of 1 quart per 100 gallons of spray solution OR a crop oil concentrate at the rate of 1.25 gallons per 100 gallons of spray solution, AND a liquid fertilizer at the rate of 1.25 gallons per 100 gallons of spray solution. To avoid injury to sensitive crops from drift, aerial applica- tors must adhere to the SPRAY DRIFT restrictions in this label. Applicator is responsible for any loss or damage that results from spraying Lightning in a manner other than recommended in this label. In addition, applicator must follow all applicable state and local regulations and ordi- nances in regard to spraying SENSITIVE CROP PRECAUTIONS Lightning may cause injury to desirable trees and plants, particularly cotton, flowers, fruit trees, grapes, ornamen- tals, potatoes, sugar beets, sunflowers, tobacco, tomatoes and other broadleaf plants when contacting their roots, stems or foliage. These plants are most sensitive to Lightning during their development or growing stage. FOLLOW THE PRECAUTIONS LISTED BELOW WHEN USING Lightning: • DO NOT treat areas where either possible downward movement into the soil or surface washing may cause contact of Lightning with roots of desirable plants such as trees and shrubs. • Avoid making applications when spray particles may be carried by air currents to areas where sensitive crops and plants are growing. DO NOT spray near sensitive plants if wind is gusty or in excess of 15 mph and moving in the direction of nearby sensitive crops. However, always make applications when there is some air move- ment to determine the direction and distance of possible spray drift. Leave an adequate buffer zone between area to be treated and sensitive plants. Coarse sprays are less likely to drift out of the target area than fine sprays. 9 • Use coarse sprays to avoid potential herbicide drift. Select nozzles which are designed to produce minimal amounts of fine spray particles such as Spraying Systems XR flat fans. A spray pressure of 20 psi and spray volume at or above 20 GPA is recommended to reduce drift to sensitive crops. • Agriculturally approved drift-reducing additives may be used. • To avoid injury to desirable plants, equipment used to apply Lightning ® herbicide should be thoroughly cleaned (see CLEANING SPRAY EQUIPMENT ) before reusing to apply any other chemicals. Additives Ground, postemergence applications of Lightning require the addition of an adjuvant AND a nitrogen fertilizer source OR a basic blend*. ADJUVANTS • Surfactants. Use a nonionic surfactant containing at least 80% active ingredient. Apply the surfactant at the rate of 1 quart per 100 gallons (0.25% volume/volume [v/v]). An organo-silicone surfactant may be used in place of a nonionic surfactant. OR • Crop Oil Concentrate. Instead of a surfactant, a petroleum-based or vegetable seed-based oil concen- trate or methylated seed oil may be beneficial under the following conditions. 1. Hot, arid environmental conditions when weeds may be under stress and less susceptible to herbicide applications 2. For improved control in heavy infestations of weeds such as woolly cupgrass, large crabgrass, and field sandbur, or when approaching maximum labeled heights Apply crop oil concentrates or methylated seed oils at the rate of 1 gallon per 100 gallons (1% v/v). AND NITROGEN FERTILIZER SOURCE Recommended nitrogen-based fertilizers include liquid fer- tilizers (such as 28%N, 32%N or 10-34-0) at the rate of 1 to 2 quarts per acre. Use the higher rate when weeds are under moisture or temperature stress. Instead of a liquid fertilizer, spray grade ammonium sulfate may be used at the rate of 2.5 pounds per acre. * Alternatively, the use of proprietary "basic blend" products that contain both a nonionic surfactant and a nitrogen source that provide equiva- lent spray additive activity to those additives mentioned above may be used with Lightning . Other premixes containing a surfactant and a nitrogen source may be used as long as performance and rate guide- lines for surfactant and nitrogen amounts are met. Mixing Order DO NOT use liquid fertilizer as a carrier (use water only) for postemergence applications of Lightning. WATER 1. Fill the spray tank 1/2 to 3/4 full with clean water. 2. Add the required amount of Lightning to the spray tank while agitating. 3. After the Lightning has visibly dispersed, add spray additives and fill the remainder of the tank with water. An antifoam agent may be added if needed. TANK MIX PREPARATION When tank mixing Lightning with recommended herbi- cides, add the other herbicides and other components in the following order, while agitating: 1. Fill spray tank 1/2 to 3/4 full with clean water. 2. Add Lightning and thoroughly mix. 3. Add other aqueous solution products. 4. Add other soluble packet products and thoroughly mix. 5. Add WP (wettable powder), DG (dispersible granule), DF (dry flowable), or LF (liquid flowable) formulations. 6. Add EC (emulsifiable concentrate) products. 7. Add surfactant to the spray tank. 8. Add liquid fertilizer. 9. While agitating, fill the remainder of the tank with water. Tank Mixing Information When Lightning is used in combination with another her- bicide, refer to the respective label for rates, spray additives, methods of application, proper timing, weeds controlled, restrictions and precautions. Always use in accordance with the more restrictive label restrictions and precautions. No label dosages may be exceeded. Restrictions and Limitations • Only one application of Lightning may be made during the growing season. • If replanting is necessary in a field previously treated with Lightning, the field may be replanted only to CLEARFIELD® corn. Rework the soil no deeper than the treated zone. DO NOT apply a second treatment of Lightning. In the event of a crop loss due to weather, CLEARFIELD corn seed hybrids can be replanted fol- lowing an application of Lightning. If Lightning was tank mixed with other herbicides, the label restrictions for these herbicides must also be followed. • DO NOT apply Lightning within 45 days of corn harvest (silage, fodder, or grain). • DO NOT graze or feed treated corn forage, silage, fod- der, or grain for at least 45 days after an application of Lightning. • More restrictive crop growth stage limitations of tank mix partners must be followed. • DO NOT apply through any type of irrigation system. • DO NOT apply in a greenhouse. 10 • Not for use in California. • In New York, not for sale or use on Long Island. ROTATIONAL CROPS Use of Lightning® herbicide in accordance with label directions is expected to result in normal growth of rota- tional crops in most situations; however, various environmental and agronomic factors make it impossible to eliminate all risks associated with the use of this product and, therefore, rotational crop injury is always possible. The following rotational crops may be planted after apply- ing Lightning at the specified rate in corn. Rotational crops must not be planted earlier than the specified inter- vals; this will help avoid crop injury. Time after Lightning Application Crop(s) to be Grown Anytime CLEARFIELD ® corn hybrids Four months Rye, Wheat Eight and one-half months Field corn, Field corn grown for seed 1 Nine months Soybeans Nine and one-half months Alfalfa, Edible beans and peas, Peanuts, Tobacco Eighteen months Barley, Cotton 1, Lettuce, Oats, Popcorn, Safflower, Sorghum, Sunflowers, and Sweet corn Twenty-six months Potatoes Forty months 2 All crops not listed elsewhere in ROTATIONAL CROPS 1 In Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Missis- sippi, Missouri, North Carolina, South Carolina, Tennessee, or Virginia ONLY, cotton may be planted 9.5 months after a Lightning applica- tion if more than 16 inches of rainfall and/or irrigation is received following application of Lightning through October of the application year. 2 Following forty months after a Lightning application, and before plant- ing any crop not listed in ROTATIONAL CROPS, a successful field bioassay must be completed. The field bioassay consists of a test strip of the intended rotational crop planted across the previously treated field and grown to maturity. The test strip should include low areas and knolls, and include variations in soil such as type and pH. If no crop injury is evident in the test strip, rotational crop may be planted the following year. Only rotational crops harvested at maturity may be used for feed or food. BASF recommends that products containing imazethapyr (Pursuit ® herbicide and Pursuit® Plus EC herbicide ) should not be applied to CLEARFIELD corn the same year as Lightning or injury to followcrops may occur. If the field is limed to adjust pH prior to planting rotational crops not listed in ROTATIONAL CROPS, apply the lime at least 12 months prior to planting the rotational crop. ADDITIONAL ROTATIONAL CROP INFORMATION • If corn is furrow irrigated, till the soil prior to planting win- ter wheat or barley. The beds should be broken up and the soil mixed with tillage equipment set to cut 4- to 6-inches deep. • Corn inbred lines: Due to the proprietary nature of seed production, BASF has not been given access to the inbred data. Growers are directed to contact the seed company for information and recommendations regard- ing the planting of corn grown for seed in fields treated with Lightning the previous year. Because growing con- ditions, environmental conditions, and grower practices are beyond the control of BASF, TO THE EXTENT CONSISTENT WITH APPLICABLE LAW, ALL RISKS AND CONSEQUENCES ASSOCIATED WITH PLANTING SEED CORN INBREDS INTO FIELDS TREATED PREVIOUSLY WITH LIGHTNING SHALL BE ASSUMED BY THE USER. Crop-specific Information CLEARFIELD Corn Lightning can be applied postemergence (including spike stage) on CLEARFIELD corn hybrids. Tank Mixes Recommended tank mix postemergence applications with Lightning are: Clarity ®* Distinct ®* G-Max LiteTM Guardsman Max ® Marksman®* Outlook® Prowl® 2,4-D* atrazine* Banvel ®* Banvel®-k + atrazine* Bicep II Magnum ® Bicep Lite II Magnum ® Buctril® Buctril® + atrazine* Callisto® Dual II Magnum ® FulTime® Harness® Harness® Xtra Shotgun®* Status® Sterling®* Sterling Plus ®* Stinger® Surpass® TopNotch® * Use of crop oil concentrate or methylated seed oils in tank mixes with Lightning with 2,4-D, atrazine, Banvel, Banvel-k + atrazine , Buctril + atrazine, Clarity, Distinct , Marksman , Shotgun, Sterling , or Sterling Plus herbicides may result in crop injury if applied during periods of cold, wet weather or hot and/or humid weath- er. Under these environmental conditions, the use of a nonionic surfactant is recommended. DO NOT use Lightning in combination with products containing flumetsulam, thifensulfuron or rimsulfuron (e.g. Accent ®, Basis®, Basis® Gold, Hornet®, Python ®, Steadfast ® herbicides). Sequential Herbicide Combinations and Uses Lightning controls many grass species. However, when heavy grass pressure is anticipated, a soil surface applica- tion of any grass herbicide underlay (such as Guardsman Max, G-Max Lite, Prowl, Outlook, Dual II Magnum, Harness, or Surpass) is recommended. Lightning may also be used in sequential programs with registered burn-down herbicides. 11 Table 2. Pests Listed in This Label Common Name Scientific Name Alligatorweed Alternanthera philoxeroides Anoda, spurred Anoda cristata Artichoke, Jerusalem Helianthus tuberosus Barnyardgrass Echinochloa crus-galli Buckwheat, wild Polygonum convolvulus Buffalobur Solanum rostratum Bristly starbur Acanthospermum hispidum Carpetweed Mollugo verticillata Crabgrass, large Digitaria longiflorai Crabgrass, smooth Digitaria ischaemum Cocklebur, common Xanthium pensylvanicum Cupgrass, woolly Eriochloa villosa Bindweed, field Convolvulus arvensis Foxtail, giant Setaria faberi Foxtail, green Setaria viridis Foxtail, yellow Setaria lutescens Goosegrass Eleusine indica Jimsonweed Datura stramonium Johnsongrass, (seedling, rhizome) Sorghum halepense Knotweed, prostrate Polygonum aviculare Kochia Kochia scoparia Lambsquarters, common Chenopodium album Mallow, Venice Hibiscus trionum Marshelder Iva xanthifolia Milkweed, honeyvine Ampelamum albidus Millet, wild proso Panicum milaceum Morningglory, entireleaf Ipomoea hederacea var. integruscula Morningglory, ivyleaf Ipomoea hederifolia Morningglory, smallflower Jacquemontia tamnifolia Morningglory, small white (pitted) Ipomoea lacunosa Morningglory, tall (common) Ipomoea purpurea Mustard Brassica sp. Nightshade, Eastern black Solanum ptycanthum Nightshade, black Solanum nigrum Nightshade, hairy Solanum sarrachoides Nutsedge, purple Cyperus rotundus Nutsedge, yellow Cyperus esculentus Panicum, fall Panicum dichotomiflorum (continued) Table 2. Pests Listed in This Label (continued) Common Name Scientific Name Pigweed, Palmer Amaranthus palmer Pigweed, prostrate Amaranthus blitoides Pigweed, redroot Amaranthus retroflexus Pigweed, smooth Amaranthus hybridus Pigweed, spiny Amaranthus albus Quackgrass Agropyron repens Ragweed, common Ambrosia artemisifolia Ragweed, giant Ambrosia trifida Red rice Oryza sativa Ryegrass, Italian Lolium multiflorum Sage, barnyard Salvia, sp. Sandbur, field Cenchrus incertus Shattercane Sorghum bicolor Sicklepod Cassia obtusifolia Sida, prickly Sida spinosa Signalgrass, broadleaf Bracharia platyphylla Smartweed, Pennsylvania Polygonum pensylvanicum Smartweed, ladysthumb Polygonum persicaria Sorghum almum Sorghum almum Spurge, prostrate Chamaesyce humistrata Spurge, spotted Euphorbia maculata Sunflower, volunteer Helianthus sp. Sunflower, wild (common) Helianthus annuus Thistle, Canada Cirsium arvense Velvetleaf Abutilon theophrasti Wild oats Avena fatua Witchgrass Panicum capillare 12 Conditions of Sale and Warranty The Directions For Use of this product reflect the opinion of experts based on field use and tests. The directions are believed to be reliable and must be followed carefully. However, 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 weather conditions, presence of other materials, or use of the product in a manner inconsistent with its labeling, all of which are beyond the control of BASF CORPORATION (“BASF”) or the Seller. To the extent consistent with applicable law, all such risks shall be assumed by the Buyer. BASF warrants that this product conforms to the chemical description on the label and is reasonably fit for the purposes referred to in the Directions For Use , subject to the inherent risks, referred to above. TO THE EXTENT CONSISTENT WITH APPLICABLE LAW, BASF MAKES NO OTHER EXPRESS OR IMPLIED WARRANTY OF FITNESS OR MERCHANTABILITY OR ANY OTHER EXPRESS OR IMPLIED WARRANTY. TO THE EXTENT CONSISTENT WITH APPLICABLE LAW, BUYER’S EXCLUSIVE REMEDY AND BASF’S EXCLUSIVE LIABILITY, WHETHER IN CONTRACT, TORT, NEGLIGENCE, STRICT LIABILITY, OR OTHERWISE, SHALL BE LIMITED TO REPAYMENT OF THE PURCHASE PRICE OF THE PRODUCT. TO THE EXTENT CONSISTENT WITH APPLICABLE LAW, BASF AND THE SELLER DISCLAIM ANY LIABILITY FOR CONSEQUENTIAL, EXEMPLARY, SPECIAL OR INDIRECT DAMAGES RESULTING FROM THE USE OR HANDLING OF THIS PRODUCT. BASF and the Seller offer this product, and the Buyer and User accept it, subject to the foregoing Conditions of Sale and Warranty which may be varied only by agreement in writing signed by a duly authorized representative of BASF. 1108 Uses with Other Products (Tank Mixes) If this product is used in combination with any other prod- uct except as specifically recommended in writing by BASF Corporation, then to the extent consistent with appli- cable law, BASF Corporation shall have no liability for any loss, damage or injury arising out of its use in any such combination not so specifically recommended. If used in combination recommended by BASF Corporation, to the extent consistent with applicable law, the liability of BASF Corporation shall in no manner extend to any damage, loss or injury not directly caused by the inclusion of the BASF Corporation product in such combination use, and in any event, to the extent consistent with applicable law, shall be limited to return of the amount of the purchase price of the BASF Corporation product. © 2021 BASF Corporation All rights reserved. 000241-00377 .20200626b.NVA 2020-04-120-0029 Supersedes: NVA 2008-04-120-0293 BASF Corporation 26 Davis Drive Research Triangle Park, NC 27709 Banvel, Clarity, CLEARFIELD, Distinct, Guardsman Max, Lightning, Marksman, Outlook, Prowl, Pursuit, Raptor, Scepter, and Status are registered trademarks of BASF. G-Max Lite is a trademark of BASF. Accent, Basis, Classic, Steadfast, and Staple are registered trademarks of E.I. duPont de Nemours and Company. Bicep II Magnum, Bicep Lite II Magnum, Callisto, Dual II Magnum, and Spirit are registered trademarks of a Syngenta Group Company. Buctril is a registered trademark of Bayer. FulTime, Hornet, Python, Stinger, Surpass, and TopNotch are registered trademarks of Dow AgroSciences, LLC. Harness, and Harness Xtra are registered trademarks of Monsanto Technology LLC. Permit is a registered trademark of Nissan Chemical Industries Ltd. Pioneer is a registered trademark of Pioneer Hi-Bred International, Inc. Shotgun is a registered trademark of United Agri Products. Sterling and Sterling Plus are registered trademarks of Agriliance LLC.