Acuron, produced by Syngenta, stands as a popular herbicide used in farming. It’s known for its ability to effectively control many types of weeds that can harm crop growth.
This herbicide is made specifically to target and manage broadleaf weeds and grasses. It’s a valuable tool for farmers and agriculture experts.
This herbicide is flexible because it can be used on different crops like corn and soybeans.
Its purpose is to control weeds for a long time. This reduces the competition for important nutrients, water, and sunlight in fields. This helps crops grow better and produce higher-quality yields.
Let’s learn more about Acuron herbicide and how it can help farmers like us.
What is Acuron Herbicide?
Acuron herbicide is a restrictive herbicide that can be used as a pre-emergence and post-emergence treatment in various types of corn cultivation.
Acuron Herbicide Active Ingredient
The active ingredients in Acuron herbicide are S-metolachlor from Group 15 herbicides, Atrazine from Group 5 herbicides, Mesotrione from Group 27, and Bicyclopyrone from Group 27.
Acuron Herbicide is formulated as a ZC (Zone of Co-application) product, containing the following amounts of active ingredients per gallon: 1.0 lbs of Atrazine, 0.06 lbs of Bicyclopyrone, 0.24 lbs of Mesotrione, and 2.14 pounds of S-metolachlor.
It’s important to note that Atrazine in Acuron Herbicide has a maximum content of 0.45% related to triazine.
Where to use Acuron herbicide
Acuron herbicide can be used on the culture of field corn, seed corn, and silage corn as pre- and post-emergence treatments.
It can also be used as a pre-emergence treatment only for the culture of sweet corn and yellow corn.
Acuron Herbicide Use Rates
The use rate of Acuron depends entirely on the organic matter content of the field.
Therefore, before preparing to mix it, analyze the organic matter in your soil. If the organic matter content is greater than 10%, this herbicide will produce poor results.
| Soil Organic Matter Content | Application Rate |
|---|---|
| <3% | 2.5 qt/A |
| ≥3% | 3.0 qt/A |
Rate Limitations
When combining or applying atrazine or atrazine-containing products alongside Acuron Herbicide in corn, ensure that the application rate does not surpass 2.0 lbs of active ingredient of atrazine per acre for any single application.
The total pounds of atrazine applied (lb ai per acre) should not exceed 2.5 lbs of active ingredient per acre per year.
Maximum Broadcast Application Rates for Atrazine in Corn:
- If no atrazine has been applied prior to corn emergence, the maximum allowable broadcast application rate is 2.0 lb ai/A.
If a post-emergence treatment becomes necessary after an earlier herbicide application, the total atrazine applied should not exceed 2.5 lb ai/A in a single calendar year. - On soils that are not highly erodible or on highly erodible soils (as defined by the Natural Resource Conservation Service) with at least 30% soil coverage by plant residues, the maximum allowable rate for a single pre-emergence application is 2.0 lb ai/A.
- On highly erodible soils (as defined by the Natural Resource Conservation Service) where less than 30% of the surface is covered with plant residues, the maximum allowable rate for a single pre-emergence application is 1.6 lb ai/A.
Alternatively, if atrazine is applied solely post-emergence on such soils, a maximum rate of 2.0 lb ai/A is permitted.
Acuron Herbicide Mixing Instructions
For pre-emergence applications, you have to mix this herbicide for sweet corn with either clean water or liquid fertilizers.
When used for post-emergence applications, the herbicide must be mixed with clean water only.
As for other components or tank mix partners, you should follow these steps:
- When using a wettable powder or dry flowable formulation, create a slurry by combining it with water and gradually introduce it into the tank through the screen while maintaining agitation throughout the process.
- If opting for a flowable formulation, introduce it gradually into the tank through the screen.
It may be beneficial to increase mixing and compatibility by diluting a dry flowable with water before adding it to the tank. - Incorporate Acuron Herbicide into the mixture.
- Next, include any other tank mix products, ensuring that emulsifiable concentrates are added as the final step.
- If necessary, add an adjuvant as the final component.
Finish the process by filling the sprayer tank completely and maintaining agitation.
Apply the prepared spray mixture as soon as possible, avoiding leaving it unattended or without agitation in the spray tank overnight.
Acuron Herbicide Tank Mixture
Acuron herbicide can be mixed with certain tank mix partners, but it all depends on the type of treatment you plan to use.
If you are using it as a pre-emergence treatment, you can use specific tank mixture partners, and the same principles apply to post-emergence treatment.
Let’s see all possible tank mix combinations with Acuron herbicide.
Acuron and Adjuvants
The use of adjuvants is only useful in post-emergence treatments and is ineffective when dealing with weeds that have not yet emerged at the surface.
Once the corn has emerged, you can utilize a non-ionic surfactant for the herbicide at a rate of 0.25% v/v (1 qt/100 gal).
Also, you can utilize a spray-grade ammonium sulfate (AMS) at a rate of 8.5-17.0 lb/100 gallons of water.
It is not recommended to use methylated seed oil (MSO), urea ammonium nitrate (UAN), or crop oil concentrate (COC) as these may negatively impact your crop and cause injury.
Burndown Combinations
When dealing with reduced or no-till corn cultivation, Acuron Herbicide can be combined with Gramoxone, Roundup, or glyphosate to effectively control weeds that have appeared prior to the emergence of the corn crop.
To obtain great results, it is recommended to apply this mixture to weeds that measure between 1 to 6 inches in height.
Always check the label of the other herbicides and respect the amount.
Pre-emergence Tank Mixture before Corn Emergence
All the herbicides from Table 2 can be mixed with this herbicide.
Before applying the tank mix, it’s important and recommended to conduct a compatibility test.
While tank mixtures involving 2,4-D are permitted, they should be approached with extreme caution, ensuring compatibility is verified each time before blending a load.
It’s important to note that 2,4-D products, and even different batches of the same product, can exhibit significant variability in terms of compatibility.
This evaluation should be conducted whenever there are changes in the water source, carrier source, water or carrier temperature, product source, or tank mixture recipe.
| Tank Mix | Rate(Max) | Objective |
|---|---|---|
| AAtrex or other solo Atrazine products | 0.5-1.25 lb ai/A | Improved broadleaf and grass weed control |
| Princep® | 0.5-1.3 lb ai/A | Improved broadleaf and grass weed control |
| Gramoxone brands | See product label | Burndown existing weeds |
| Roundup or other glyphosate brands | See product label | Burndown existing weeds |
| Warrior® brands | See product label | To control insects, such as cutworm |
Early post-emergence Tank Mixtures After Corn Emergence
| Tank Mix | Rate (Max) | Objective |
|---|---|---|
| AAtrex or other solo Atrazine products | 0.5-1.25 lb ai/A | Improved broadleaf and annual grass weed control and weed resistance management |
| Warrior brands | As per product label | To control insects, such as cutworm |
| Accent® Q | As per product label | Emerged grass control |
| Basis® brands | As per product label | Emerged grass control |
| Status® | As per product label | Improved broadleaf control and weed resistance management |
| Steadfast® Q | As per product label | Emerged grass control |
Acuron Herbicide and Glyphosate
Acuron herbicide can be mixed with glyphosate herbicides such as Roundup Ready or Agrisure GT which are also registered for use on field corn.
However, you should avoid using this type of mixture on corn taller than 12 inches.
If the glyphosate herbicide already contains adjuvants, you are only allowed to add spray-grade ammonium sulfate (AMS) at a rate of 8.5 lb/100 gal.
Remember to always consult the labels.
How to use Acuron Herbicide
When using Acuron herbicide, you need to follow all the label instructions to ensure your safety and proper preparation for a successful application.
Here are the steps on how to use this herbicide:
- Evaluate your type of crop and determine when it is time to apply the herbicide.
Remember the following: Field corn, seed corn, and silage corn should be treated both pre-emergence and post-emergence, while sweet corn and yellow popcorn should only be treated pre-emergence or before the crop emerges. - Check the weather conditions.
Ideal weather conditions include wind speeds not exceeding 10 mph, the absence of temperature inversions, no rain, and no extreme cold or hot temperatures. - Once you decide to apply it, ensure you are wearing the necessary PPE (Personal Protective Equipment) for herbicide application.
The Acuron label specifies that mixers, loaders, and other handlers must wear:
– Coveralls over a short-sleeved shirt and short pants
– Chemical-resistant gloves made of barrier laminate, butyl rubber (≥ 14 mils), nitrile rubber (≥ 14 mils), neoprene rubber (≥ 14 mils), natural rubber (≥ 14 mils), polyethylene, polyvinyl chloride (PVC) (≥ 14 mils), or Viton (≥ 14 mils)
– Chemical-resistant footwear plus socks
– A chemical-resistant apron when mixing/loading, cleaning up spills, or cleaning equipment, or when otherwise exposed to the concentrate
– Chemical-resistant headgear for overhead exposure - Check the mixing instructions and begin preparing the solutions.
Continue to stir and agitate everything until you achieve a uniform mixture. - Spray the entire intended area with the herbicide.
Ensure that you spray uniformly and cover all weeds with the herbicide solution. - If you apply it as a pre-emergence treatment and a substantial amount of rainfall doesn’t occur within 7 days following the application, weed control effectiveness might decrease.
If you have access to irrigation, consider applying 1/2 to 1 inch of water. - After you have finished spraying, clean your equipment.
First, use clean water to rinse out the tank, hoses, boom, and nozzles.
Then, create a cleaning mixture by combining 1 gallon of household ammonia with every 25 gallons of water.
Use a powerful water spray or fill the tank completely with the cleaning mixture. If you do not have a powerful water spray, fill the sprayer with the cleaning mixture and agitate it inside the tank for at least 15 minutes.
Remove any dirt or deposits that you observe.
Afterward, clean the hoses, spray lines, and nozzles with the same type of cleaning mixture for 1 minute.
Finally, rinse everything thoroughly with water. You can repeat this process until you are certain that everything is clean.
When to replant or plant
After spraying with Acuron herbicide, you can replant field corn, seed corn, silage corn, sweet corn, and yellow popcorn at any time, as long as you have not used more than 3 qt. of herbicide per acre per year.
For small grain cereals like wheat, barley, and rye, you must wait for 4 months after the treatment.
For cotton, sorghum of all types, soybeans, potatoes, rice, and peanuts, you can replant after 10 months.
For all other rotational crops, there is an 18-month waiting period for replanting.
Restrictions
Like any other herbicide, Acuron has its usage restrictions that must be followed to ensure responsible and safe product use.
- Grazing Restriction: To prevent potential illegal residue issues, refrain from allowing grazing or providing forage from treated areas for a duration of 45 days following the application.
- Pre-Harvest Interval (PHI): Corn (for grain, seed, or silage) can be treated until it reaches a height of 12 inches.
Refrain from harvesting forage within 60 days after the application. - Application Rate Limit: Ensure that the application does not exceed 3.0 qt of Acuron Herbicide per acre in a single treatment.
- Annual Application Limit: The total application of Acuron Herbicide should not surpass 3.0 qt per acre per year.
- Frequency of Applications:Limit the number of Acuron Herbicide applications to a maximum of two per year.
- Minimum Gap Between Applications: Do not apply the second treatment within 14 days of the initial application.
- Aerial Application: Do not apply it via aerial application methods.
- Post-Emergence Sweet Corn and Yellow Popcorn: Do not apply Acuron Herbicide to sweet corn or yellow popcorn after the crop has emerged, as it may lead to severe crop injury.
- Limited Crop Usage: Limit the use of Acuron Herbicide to corn (for grain, seed, or silage), sweet corn (only for pre-emergence applications), or yellow popcorn (only for pre-emergence applications).
- Exclusion of White Popcorn and Ornamental Corn: Do not use Acuron Herbicide in the cultivation of white popcorn or ornamental (Indian) corn to avoid potential injury.
- Prevent Water Contamination: Take precautions to prevent the contamination of irrigation water used for crops or water used for domestic purposes.
- Avoid Mixing with Organophosphate or Carbamate Insecticides: Avoid making post-emergence (emerged corn) applications of Acuron Herbicide in combination with any organophosphate or carbamate insecticide, as it may result in severe corn injury.
- Prevent Off-Site Movement: Prevent conditions that promote soil runoff or wind erosion carrying this product to non-target areas.
Acuron Herbicide Crop Damage
Acuron herbicide can adversely affect crops and cause damage if:
- it is not used correctly
- it is combined with the wrong tank mix partners
- it is not applied at the right time.
All potential damages resulting from Acuron herbicide use can be avoided by following label instructions, precautions, and restrictions.
Here are some key points regarding Acuron herbicide and the potential for corn damage:
1. Apply the herbicide at the recommended rates suitable for your soil type. Overapplication can lead to crop damage.
2. Apply it as a pre-emergence treatment before the emergence of sweet and yellow popcorn crops and as a post-emergence treatment when field corn, silage corn, or seed corn reaches a specific growth stage.
3. Ensure compatibility with all tank-mix partners and adjuvants.
Follow the label instructions for each product you use. Incompatibility or improper mixing can result in crop injury.
4. Use only clean equipment.
Using a sprayer or applicator that has been contaminated with other chemicals can cause damage to your crops.
Weeds Controlled by Acuron herbicide
Acuron herbicide controls a wide variety of broadleaf weeds, such as ragweed and amaranth, as well as sedges and grass weeds like Barnyardgrass, Crabgrass, and Johnsongrass.
Tables A and B list all the weed names that this herbicide can help you combat in your corn fields.
| Common Name | Scientific Name | Weed Rating1 |
|---|---|---|
| Broadleaf Weeds | ||
| Amaranth, Palmer | Amaranthus palmeri | C |
| Amaranth, Powell | Amaranthus powellii | C |
| Bedstraw, catchweed | Galium aparine | PC |
| Beggarweed, Florida | Desmodium tortuosum | C |
| Buckwheat, wild | Polygonum convolvulus | C |
| Buffalobur | Solanum rostratum | C |
| Carpetweed | Mollugo verticillata | C |
| Chickweed, common | Stellaria media | C |
| Cocklebur, common | Xanthium strumarium | C2 |
| Deadnettle, purple | Lamium purpureum | C |
| Devil’s-claw | Proboscidea louisianica | C |
| Galinsoga | Galinsoga parviflora | C |
| Henbit | Lamium amplexicaule | C |
| Horseweed (marestail) | Conyza canadensis | C |
| Jimsonweed | Datura stramonium | C |
| Kochia | Kochia scoparia | C |
| Lambsquarters, common | Chenopodium album | C |
| Mallow, Venice | Hibiscus trionum | C |
| Morningglory, ivyleaf/entireleaf | Ipomoea hederacea | C2 |
| Mustard, wild | Brassica kaber | C |
| Nightshade, black | Solanum nigrum | C |
| Nightshade, eastern black | Solanum ptycanthum | C |
| Nightshade, hairy | Solanum sarrachoides | C |
| Pigweed, redroot | Amaranthus retroflexus | C |
| Pigweed, smooth | Amaranthus hybridus | C |
| Puncturevine | Tribulus terrestris | C |
| Purslane, common | Portulaca oleracea | C |
| Pusley, Florida | Richardia scabra | C |
| Radish, wild | Raphanus raphanistrum | C |
| Ragweed, common | Ambrosia artemisiifolia | C |
| Ragweed, giant | Ambrosia trifida | C |
| Sesbania, hemp | Sesbania exaltata | C |
| Shepherd’s-purse | Capsella bursa-pastoris | C |
| Sicklepod | Cassia obtusifolia | C |
| Sida, prickly | Sida spinosa | PC |
| Smartweed, ladysthumb | Polygonum persicaria | C |
| Smartweed, Pennsylvania | Polygonum pensylvanicum | C |
| Sunflower, common | Helianthus annuus | PC |
| Thistle, Russian | Salsola tragus | C |
| Velvetleaf | Abutilon theophrasti | C |
| Waterhemp, common | Amaranthus rudis | C |
| Waterhemp, tall | Amaranthus tuberculatus | C |
| Grass Weeds | ||
| Barnyardgrass | Echinochloa crus-galli | C |
| Crabgrass | Digitaria spp. | C |
| Crowfootgrass | Dactyloctenium aegyptium | C |
| Cupgrass, prairie | Eriochloa contracta | C |
| Cupgrass, Southwestern | Eriochloa gracilis | C |
| Cupgrass, woolly | Eriochloa villosa | PC |
| Foxtail, giant | Setaria faberi | C |
| Foxtail, green | Setaria viridis | C |
| Foxtail, robust (purple, white) | Setaria spp. | C |
| Foxtail, yellow | Setaria pumila | C |
| Goosegrass | Eleusine indica | C |
| Johnsongrass, seedling | Sorghum halepense | PC |
| Millet, foxtail | Setaria italica | C |
| Millet, wild proso | Panicum miliaceum | PC |
| Panicum, Texas | Panicum texanum | PC |
| Rice, red | Oryza sativa | C |
| Sandbur, field | Cenchrus incertus | PC |
| Shattercane | Sorghum bicolor | PC |
| Signalgrass, broadleaf | Brachiaria platyphylla | C2 |
| Signalgrass, narrowleaf | Brachiaria piligera | C |
| Sprangletop, red | Leptochloa filiformis | C |
| Starbur, bristly | Acanthospermum hispidum | C |
| Witchgrass | Panicum capillare | C |
1 C = Control, PC = Partial Control
2 May require a tank mix partner (e.g. atrazine) for control of heavy populations
| Common Name | Scientific Name | Weed Rating1 |
|---|---|---|
| Broadleaf Weeds | ||
| Amaranth, Palmer | Amaranthus palmeri | C |
| Amaranth, Powell | Amaranthus powellii | C |
| Bedstraw, catchweed | Galium aparine | PC |
| Beggarweed, Florida | Desmodium tortuosum | C |
| Buckwheat, wild | Polygonum convolvulus | C |
| Buffalobur | Solanum rostratum | C |
| Carpetweed | Mollugo verticillata | C |
| Chickweed, common | Stellaria media | C |
| Cocklebur, common | Xanthium strumarium | C |
| Dandelion | Taraxacum officinale | PC |
| Deadnettle, purple | Lamium purpureum | C |
| Devil’s-claw | Proboscidea louisianica | C |
| Galinsoga | Galinsoga parviflora | C |
| Hemp | Cannabis sativa | C |
| Henbit | Lamium amplexicaule | C |
| Horsenettle | Solanum carolinense | C |
| Horseweed (marestail) | Conyza canadensis | C |
| Jimsonweed | Datura stramonium | C |
| Kochia | Kochia scoparia | C |
| Lambsquarters, common | Chenopodium album | C |
| Mallow, Venice | Hibiscus trionum | C |
| Marestail | Hippuris vulgaris | C |
| Morningglory, ivyleaf/entireleaf | Ipomoea hederacea | C |
| Mustard, wild | Brassica kaber | C |
| Nightshade, black | Solanum nigrum | C |
| Nightshade, eastern black | Solanum ptycanthum | C |
| Nightshade, hairy | Solanum sarachoides | C |
| Pigweed, redroot | Amaranthus retroflexus | C |
| Pigweed, smooth | Amaranthus hybridus | C |
| Pokeweed | Phytolacca americana | C |
| Potatoes, volunteer | Solanum spp. | C |
| Purslane, common | Portulaca oleracea | C |
| Pusley, Florida | Richardia scabra | C |
| Radish, wild | Raphanus raphanistrum | C |
| Ragweed, common | Ambrosia artemisiifolia | C |
| Ragweed, giant | Ambrosia trifida | C |
| Sesbania, hemp | Sesbania exaltata | C |
| Shepherd’s-purse | Capsella bursa-pastoris | C |
| Sida, prickly | Sida spinosa | C |
| Smartweed, ladysthumb | Polygonum persicaria | C |
| Smartweed, Pennsylvania | Polygonum pensylvanicum | C |
| Sunflower, common | Helianthus annus | C |
| Thistle, Canada | Cirsium arvense | C |
| Velvetleaf | Abutilon theophrasti | C |
| Waterhemp, common | Amaranthus rudis | C |
| Waterhemp, tall | Amaranthus tuberculatus | C |
Contents
- What is Acuron Herbicide?
- Acuron Herbicide Active Ingredient
- Where to use Acuron herbicide
- Acuron Herbicide Use Rates
- Acuron Herbicide Mixing Instructions
- Acuron Herbicide Tank Mixture
- How to use Acuron Herbicide
- When to replant or plant
- Restrictions
- Acuron Herbicide Crop Damage
- Weeds Controlled by Acuron herbicide
Important: Always read and follow label instructions. Some products may not be registered for sale or use in all states or counties. Please check with your local extension service to ensure registration status. Acuron it is a restricted-use herbicide.
