Acuron flexi

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ACURON FLEXI Herbicide is labeled for use in field corn, seed corn, and sweet corn for control of many annual grass and broadleaf weeds. ACURON FLEXI Herbicide is a combination of the herbicides bicyclopyrone, mesotrione, and S-metolachlor.
NOTE: ACURON FLEXI Herbicide contains benoxacor that has been shown to enhance Smetolachlor metabolism in corn.


As this product is not registered for the control of pests in aquatic systems, DO NOT use to control aquatic pests.
DO NOT contaminate irrigation or drinking water supplies or aquatic habitats by cleaning of equipment or disposal of wastes.
Field sprayer application: DO NOT apply during periods of dead calm. Avoid application of this product when winds are gusty. DO NOT apply with spray droplets smaller than the American Society of Agricultural Engineers (ASAE S572.1) medium classification. Boom height must be 60 cm or less above the crop or ground.
DO NOT apply more than 3.7 L product/ha/season.
DO NOT apply any other mesotrione containing products to fields treated with ACURON FLEXI Herbicide in the same year.
DO NOT apply by air.

Ground Application
It is important to check the physical compatibility of tank mixed pesticide products in a small volume prior to filling the sprayer. Check the compatibility of tank mixes containing ACURON FLEXI Herbicide using a jar test with proportionate amounts of mix partners, and water, before mixing in the spray tank.

Mixing Instructions
1. Ensure that the sprayer interior is clean, then fill the spray tank with ½ the required amount of water and engage gentle agitation. Good agitation is indicated by a rippling or rolling action on the surface of the water.
2. Add any WG or DF formulation mix partners and agitate to ensure complete mixing.
3. Add ACURON FLEXI Herbicide and agitate to ensure complete mixing.
4. Add any SE or SC formulation mix partners and agitate to ensure complete mixing.
5. Add any EC formulation mix partners and agitate to ensure complete mixing.
6. Fill the tank to ¾ the required amount of water.
7. Add any solution (SN or SL) formulation mix partners and agitate to ensure complete mixing.
8. Finish filling the sprayer with water, maintaining good agitation.
9. Always ensure that agitation is maintained until spraying is completed. After any break in spraying operations, agitate thoroughly before spraying again. Reduce agitation once tank volume is reduced to about one third of capacity.
10. ACURON FLEXI Herbicide must be sprayed the same day as mixing. Do not allow spray solution to remain in the tank overnight.
11. Do not mix, load or clean spray equipment where there is a potential to contaminate wells or aquatic systems.
When using chemical handling equipment to fill the sprayer, the following additional recommendations apply:
• WG and DF formulations are preferentially batch mixed.
• SC, SN, and SL formulations may be inducted or batch mixed.
• EC formulations are preferentially batch mixed.

Application in Liquid Fertilizers
Nitrogen solutions (such as 28-0-0 UAN), excluding suspension and sulphur containing fertilizers, may replace water as a carrier for pre-emergence applications of ACURON FLEX Herbicide in corn. Do not use nitrogen solutions as a carrier to corn that has emerged. Always predetermine the compatibility of ACURON FLEXI Herbicide tank mixes with your liquid fertilizer carrier by mixing small proportional quantities in advance. Even if ACURON FLEXI Herbicide is physically compatible with a fluid fertilizer, constant agitation is necessary to maintain a uniform mixture during application.

Spraying Instructions
1. Carrier Volume: Apply in a minimum spray volume of 150 L/ha as per the tabulated instructions below.
2. Sprayer Agitation: Use a jet agitator or liquid sparge tube which recirculates 7-10% of Approved ACURON FLEXI Herbicide 33476 2022-07-12 Page 13 of 19 the tank per minute. DO NOT use an air sparger.
3. Pump: Screens should be used to protect the pump and prevent clogging. Use 16 mesh or coarser screens on the suction side of the pump. DO NOT place a screen in the recirculation line. Use 50 mesh or coarser screens between the pump and boom unless directed otherwise by the sprayer manufacturer.
4. Spray Nozzles: 80° or 110° drift reducing flat fan (e.g. those with a pre-orifice or turbulence chamber) or air induction nozzles are recommended. Use 50 mesh or coarser nozzle screens or as recommended by the nozzle manufacturer. DO NOT use flood type nozzles, controlled droplet application equipment, spray foils or hollow cone nozzles.
5. Pressure: As recommended by the nozzle manufacturer to achieve no finer than ASAE medium sized droplets.
6. Apply at uniform speed and avoid overlapping. Avoid operations that contribute to nonuniform application and the potential for crop injury. Coarse sprays are less likely to drift, therefore, avoid combinations of pressure and nozzle type that will result in fine particles (mist). DO NOT apply during periods of dead calm or when wind velocity and direction pose a risk of spray drift. DO NOT spray when the wind is blowing towards a nearby sensitive crop, garden, terrestrial habitat (such as shelter-belt) or aquatic habitat.

Sprayer Cleanup
To avoid subsequent injury to other crops, thoroughly clean application equipment immediately after spraying each day. Ensure that all traces of the product are removed. Do not allow residue to dry in spray tank. Do not allow solution to remain in lines or tank overnight. The following procedures are recommended:
1. Drain and flush tank, boom and all hoses for several minutes with clean water. Ensure dead end lines are flushed. Do not clean the sprayer near desirable vegetation, wells or other water sources.
2. Prepare a cleaning solution of one part of household ammonia per 25 parts of water. A household detergent may also be added to the solution.
3. Use a pressure washer to clean the inside of the spray tank with this solution. Take care to wash all parts of the tank, including the inside top surface. If a pressure washer is not available, completely fill the sprayer with the cleaning solution to ensure contact of the cleaning solution with all internal surfaces of the tank and plumbing. Start agitation in the sprayer and thoroughly recirculate the cleaning solution for at least 15 minutes. All visible deposits must be removed from the spraying system.
4. Flush hoses, spray lines, and nozzles for at least 1 minute with the cleaning solution.
5. Dispose of all rinsings in accordance with provincial regulations.
6. Repeat steps 2-5.
7. Remove nozzles, screens, and strainers and clean separately in the ammonia solution after completing the above procedures.
8. Rinse the complete spraying system with clean water.

Spray Buffer Zones
Spot treatments using hand-held equipment DO NOT require a spray buffer zone.
Approved ACURON FLEXI Herbicide 33476 2022-07-12 Page 14 of 19
The spray buffer zones specified in the table below are required between the point of direct application and the closest downwind edge of sensitive terrestrial habitats (such as grasslands, forested areas, shelter belts, woodlots, hedgerows, riparian areas and shrublands), sensitive freshwater habitats (such as lakes, rivers, sloughs, ponds, prairie potholes, creeks, marshes, streams, reservoirs and wetlands) and estuarine/marine habitats.

Registered for culturesRate
Corn3 - 3.7 l
Sweet corn3.7 l