Imazapyr 4 SL Herbicide
ALLIGARE
Imazapyr 4 SL Herbicide
Imazapyr 4 SL is a non-selective pre-emergent and post-emergent herbicide used to control most annual and perennial grasses, broadleaf weeds, vines, trees in various sites including aquatic areas. With its soil sterilizer feature it can also be used in pastures and rangelands to ensure nothing grows along fence lines.
As low as
$58.50
Only %1 left
SKU
Imazapyr 4 SL Herbicide Product Page
Min : 58.5 - Max : 341.4
Imazapyr 4 SL Herbicide, manufactured by Alligare, is an effective non-selective bare ground herbicide to control various types of weeds and plants in both their pre-emergent and post-emergent stages.
This broad-spectrum herbicide works by penetrating the foliage, traveling through the plant to the roots. It is mixed with water and a surfactant to provide long-lasting results for up to 12 months. This pre-emergent and post-emergent combination herbicide starts to kill weeds and vines immediately upon contact, offering fast weed elimation results with a minimum amount of product.
Imazapyr 4 SL Herbicide successfully integrates the use of the active ingredient imazapyr 52.6%, which guarantees long-term control by sterilizing the soil it is sprayed over for up to 1 year. After several weeks, a complete knockdown of unwanted vegetation such as vines or brush on industrial and commercial areas is complete.
Tools Needed
To apply Imazapyr 4 SL Herbicide, a hose-end sprayer, handheld pump sprayer, backpack sprayer or skid sprayer is needed. For spot treatments, we recommend using a handheld pump sprayer or backpack sprayer.
When this product is used as a post-emergent spray, it would be best to use a surfactant. Only use a surfactant that is labeled for the specific use site. When using for conifer release treatments, refer to the conifer release section of this label.
How to Use
- Step 1: Determine how much Imazapyr 4 SL Herbicide you will need by calculating the square footage of the treatment area. To do this, measure the treatment areas length and width in feet then multiply them together (length X width = square footage). For spot treatments or direct foliar sprays, Imazapyr 4 SL can be mixed at a rate of 1 1/3 oz. (1% concentration) to 6 2/3 oz (5% concentration) fl. oz. plus 1/3 oz. of a non-ionic surfactant in 1 gallon of water to treat 1,000 sq. ft. Depending on the aquatic weed and site, use 1-3 pints of product per acre. Do not exceed the maximum label rate of 3 pints per acre per year. Refer to the label for specific rates and application site restrictions.
- Step 2: Fill your sprayer halfway with water and then add the correct amount of Imazapyr 4 SL to the spray tank. Fill the sprayer with the other half of water and then shake the spray tank so the solution is well mixed. Lastly, add the appropriate amount of surfactant then shake until thoroughly mixed.
- Step 3: Apply the Imazapyr 4 SL Herbicide mixture evenly to areas with targeted vegetation until wet, but not to the point of run-off. Use a fan spray nozzle setting for even coverage. Avoid direct spray contact to desired plant species as injury may occur.
Where to Use
Although Imazapyr 4 SL Herbicide can be used on labeled grasses, broadleaf weeds, vines, brambles, hardwood brush, trees, and other undesirable vegetation in forestry sites, aquatic sites, grass pasture, rangeland, fence rows, maintenance of wildlife openings, and industrial noncropland areas including railroad, utility, pipeline rights-of-way, utility plant sites, petroleum tank farms, pumping installations, storage areas, building perimeters, irrigation and non-irrigation ditchbanks, roads, transmission lines, and industrial bare ground areas.
This product can be applied to emerged and floating aquatic vegetation in and around standing and flowing water, including estuarine and marine sites. Applications may be made to control undesirable wetland, riparian and terrestrial vegetation growing in or around surface water.
This product may be used on emerged labeled weeds on listed aquatic sites, but will not control submerged aquatic vegetation.
DO NOT apply to lawns, Christmas trees, and on food or feed crops.
When to Use
Imazapyr 4 SL Herbicide can be used any time unwanted label listed plants and other types of vegetation need to be removed. It is ideal to use Imazapyr 4 SL Herbicide to eliminate annual and perennial grasses and broadleaf weeds.
To avoid accidental damage to wanted vegetation, applications should be made during calm weather to keep the product from drifting to non-targeted areas. Imazapyr 4 SL can be applied within 2 weeks after mowing or cutting.
Depending on the aquatic site, this product can only be applied to weeds after water has been drained and allow 14 days before reintroduction of water.
Safety Information
Imazapyr 4 SL Herbicide is safe to use around children and pets when applied according to product label instructions. Always wear the proper personal protective equipment (PPE) when mixing and applying this product.
Do not allow people or pets to enter treated areas until 48 hours have passed after application and spray has completely dried.
There are no grazing restrictions following application of this product. DO NOT cut forage grass for hay for seven days after application of this product.
Special Considerations
Imazapyr 4 SL Herbicide can be used to eliminate stumps. If areas are over-treated and if a surfactant is not added, the risk of creating a run-off onto other plants causing damage increases.
Do not side trim desirable vegetation with this product unless severe injury and plant death can be tolerated.
| Availability | Online |
| Restricted Use | No |
| Shipping Restrictions | 2.5 Gallon: AK, CA, CT, HI, IN, MI, NY, OR, RI, SC, VT, WA 32 Ounce: AK, CA, CT, HI, IN, MI, NY, OR, RI, SC, VT, WA |
| Brand | ALLIGARE |
| Keith's Pro Tips | "When using Imazapyr 4 SL Herbicide, always mix in a surfactant to help the product stick to the plant. This prevents some of the run-off activity from occurring causing it to spread to desired plants. Alligare 90 is a great surfactant and is recommended for use with Imazapyr 4 SL." |
| Product Drawbacks | Imazapyr 4 SL Herbicide is a non-selective herbicide and is not suitable for use on lawns or turfs. For treating lawns and turfs of unwanted weeds, we recommend TopShot Weed Killer. |
| Target Pests | Alder, Alligatorweed, American, Annual, Arrowweed, Ask, Aspen, Autumn, Bahiagrass, Bald, Bamboo, Barley, Barnyardgrass, Beardgrass, Beech, Bermudagrass, Big, Bigleaf, Bindweed, Birch, Black, Bluegrass, Bluestem, Boxelder, Brazilian, Broadleaf, Brome, Bromw, Broom, Buckwheat, Bull, Burclover, Burdock, Bursage, Camelthorn, Camphorweed, Canada, Canarygrass, Cannon, Carolina, Carpetweed, Carrot, Cattail, Ceanothis, Cheat, Cherry, Chickweed, Chinaberry, Chinese, Chinquapin, Clover, Cocklebur, Cogongrass, Common, Cordgrass, Cottonwood, Creeper, Crowfootgrass, Cudweed, Cupgrass, Cypress, Daisy, Dallisgrass, Dandelion, Desert, Diffuse, Dock, Dog, Dogfennel, Dogwood, Downy, Dropseed, Eucalyptus, Fall, Fennel, Fescue, Fiddleneck, Filaree, Fleabane, Florida, Foxtail, Fuse, Geranium, Giant, Goldenrod, Goosefoot, Goosegrass, Grape, Gray, Guineagrass, Gum, Hawthorn, Heaven, Hedge, Henbit, Hickory, Hoary, Honeysuckle, Hop, Horseweed, Huckleberry, Indian, Italian, Itchgrass, Ivy, Japanese, Johnsongrass, Junglerice, Kentucky, Knapweed, Knotweed, Kochia, Lambsquarters, Lespedeza, Lettuce, Little, London, Loosestrife, loosestrife, Lovegrass, Lyonia, Madrone, Mallow, Maple, Melaleuca, Milkweed, Miners, Morningglory, Mouseear, Muhly, Mulberry, Mullein, Mullien, Mustard, Nettle, Nettleleaf, Nightshade, Oak, Oats, of, Olive, Orchardgrass, Oxeye, Panicum, Parsnip, Peppertree, Pepperweed, Phragmites, Pigweed, Plantain, Poison, Pokeweed, Popcorn-Tree, Poplar, Praieie, Prairie, Primrose, Privet, Prostrate, Puncturevine, Purple, Purse, Purslane, Pusley, Pweaimmon, Quackgrass, Rabbitbrush, Ragweed, Red, Redvine, Reed, Rocket, Rose, Rush, Russian, Ryegrass, Saltbrush, Saltbush, Saltgrass, Saltscedar, Sand, Sandbur, Sassafras, Shepherd's, Signalgrass, Silverleaf, Skeletonweed, Smartweed, Smooth, Snakeweed, Sorrell, Sourwood, Sowthistle, Spp, Sprangletop, Spurge, Starthistle, Stinging, Sumac, Sunflower, Sweet, Sweetgum, Sycamore, Tallow, Tanoak, Tansymustard, Texas, Thistle, Threeawn, Timothy, TiTi, Torpedograss, Tree, Turnip, Vasseygrass, Velvetleaf, Vervain, Virginia, Western, Wild, Wirestem, Witchgrass, Woodsorrel, Woolly, Woollyleaf, Woolyleaf, Yellow, Adler, Crabgrass, Feathertop, Field, Filaree, Panicum, Paragrass, Poison |
| Application Equipment | Backpack Sprayer, Gloves, Hose End Sprayer, Pump Sprayer, Spray Rig |
| Application Methods | Broadcast Spray, Crack & Crevice, Injection, Spot Treatment |
| Active Ingredient | Isopropylamine salt of Imazapyr 52.6% |
| Product Type | Herbicide |
| Formulation | Emulsifiable Concentrate (EC) |
| Application Rate | Mix at a rate of 1.333 to 6 ounces of Imazapyr 4 SL Herbicide per 1 gallon of water. For more specific application rates please refer to the label. |
| Shelf Life | Imazapyr 4 SL Herbicide will last for up to 3 years when stored in a cool, dry storage area. |
| Yield | Coverage area of Imazapyr 4 SL Herbicide varies depending on application but not to exceed 3 pints per acre per year. |
| Use Sites | Outdoors |
| Time to Kill | Imazapyr 4 SL Herbicide begins to eliminate unwanted weeds within turf just after application but can take up to several weeks to completely kill of the target weeds. |
| Comparable Products | Arsenal 4 SL, TVC Total Vegetation Control |
| Incompatible Home Siding | Brick, Hardie Plank, Stone Veneer, Wood, Vinyl |
| EPA Registration # | 81927-24 |
| Restricted Use | No |
|---|---|
| Shipping Restrictions | AK, CA, CT, HI, IN, MI, NY, OR, RI, SC, VT, WA |
| Availability | Online |
| Keith's Pro Tip | "When using Imazapyr 4 SL Herbicide, always mix in a surfactant to help the product stick to the plant. This prevents some of the run-off activity from occurring causing it to spread to desired plants. Alligare 90 is a great surfactant and is recommended for use with Imazapyr 4 SL." |
| Target Pests Multi | Annual Bluegrass, Annual Spurge, Bahiagrass, Barnyardgrass, Beardgrass, Bermudagrass, Big Bluestem, Broadleaf Signalgrass, Broom Snakeweed, Bull Thistle, Bur Clover, Burdock, Camphorweed, Canada Thistle, Carolina Geranium, Carpetweed, Cattail, Cheat, Cherry, Clover, Cocklebur, Cogongrass, Common Chickweed, Common Ragweed, Crabgrass, Crowfootgrass, Cudweed, Dallisgrass, Dandelion, Desert Camelthorn, Diffuse Knapweed, Dock, Downy Brome, Fall Panicum, Feathertop, Fescue, Fiddleneck, Field Bindweed, Filaree, Fleabane, Florida Pusley, Foxtail, Giant Ragweed, Goosegrass, Grey Rabbitbrush, Guineagrass, Hedge Bindweed, Henbit, Hoary Vervain, Honeysuckle, Horseweed/Marestail, Indian Mustard, Italian Ryegrass, Itchgrass, Japanese Bamboo, Japanese Knotweed, Johnsongrass, Junglerice, Kentucky Bluegrass, Kochia, Lambsquarters, Little Mallow, London Rocket, Lovegrasses, McCartney Rose, Milkweed, Miners Lettuce, Morningglory, Mouseear Chickweed, Mullein, Multiflora Rose, Nettleleaf Goosefoot, Oak, Orchardgrass, Oxeye Daisy, Panicum, Paragrass, Pepperweed, Phragmites, Pigweed, Plantain, Poison Ivy, Poison Oak, Pokeweed, Prairie Cordgrass, Prairie Threeawn, Primrose, Prostrate_Knotweed, Puncture Vine, Purslane, Quackgrass, Redvine, Reed Canarygrass, Rush Skeletonweed, Russian Knapweed, Russian Thistle, Saltgrass, Sand Dropseed, Sandbur, Shepherdspurse, Silverleaf Nightshade, Smartweed, Smooth Brome, Sorrell, Sowthistle, Sprangletop, Stinging Nettle, Sunflower, Tansy Mustard, Texas Thistle, Timothy, Torpedograss, Trumpet Creeper, Vaseygrass, Velvetleaf, Virginia Creeper, Western Ragweed, Wild Barley, Wild Buckwheat, Wild Carrot, Wild Lettuce, Wild Oats, Wild Parsnip, Wild Turnip, Willow, Wirestem Muhly, Witchgrass, Woolly Cupgrass, Woollyleaf Bursage, Yellow Starthistle, Yellow_Woodsorrel, Alder, American Beech, Arrowwood, Ash, Aspen, Autumn Olive, Bald Cypress, Bigleaf Maple, Birch, Black Gum, Black Oak, Blueberry, Boxelder, Brazilian Peppertree, Ceanothus, Chinaberry, Chinese Tallowtree, Chinquapin, Cottonwood, Cypress, Dogfennel, Dogwood, Eucalyptus, Fetterbush, Goldenrod, Hawthorn, Hickory, Huckleberry, Lyonia, Madrone, Maples, Melaleuca, Mulberry, Persimmon, Popcorn-tree, Poplar, Privet, Purple Loosestrife, Red Alder, Red Maple, Salt Cedar, Saltbush, Sassafras, Sourwood, Sparkleberry, Staggerbush, Sumac, Sweet Clover, Sweet Gum, Sycamore, Tan Oak, Titi, Tree-of-Heaven, Vaccinium, Wild Grape, Wild Rose, Yellow Poplar |
| Time to Kill | Imazapyr 4 SL Herbicide begins to eliminate unwanted weeds within turf just after application but can take up to several weeks to completely kill of the target weeds. |
| Chemical Type | Herbicide |
| Formulation | Emulsifiable Concentrate (EC) |
| Application Methods | Broadcast Spray, Crack & Crevice, Injection, Spot Treatment |
| Product Drawbacks | Imazapyr 4 SL Herbicide is a non-selective herbicide and is not suitable for use on lawns or turfs. For treating lawns and turfs of unwanted weeds, we recommend TopShot Weed Killer. |
| Active Ingredient | Isopropylamine salt of Imazapyr 52.6% |
| Application Equipment | Backpack Sprayer, Gloves, Hose End Sprayer, Pump Sprayer, Spray Rig |
| Mix Rate | Mix at a rate of 1.333 to 6 ounces of Imazapyr 4 SL Herbicide per 1 gallon of water. For more specific application rates please refer to the label. |
| Low Use Rate | 0.09 oz./1,000 sq. ft. |
| High Use Rate | 0.91 oz./1,000 sq. ft. |
| Use Sites | Outdoors |
| Yield | Coverage area of Imazapyr 4 SL Herbicide varies depending on application but not to exceed 3 pints per acre per year. |
| EPA Registration No. | 81927-24 |
| Shelf Life | Imazapyr 4 SL Herbicide will last for up to 3 years when stored in a cool, dry storage area. |
| Comparable Products | Arsenal 4 SL, TVC Total Vegetation Control |
| Children or pets? | No |
| Property Characteristics | Grazing Animals |
Questions and Answers
-
Q:How much of Imazapyr 4 SL would I need to mix per gallon of water to kill a severe patch of cogon grass?4/3/24A:This will depend on the site and method, but it is labeled for 2 specific areas. For terrestial sites, use 2.0 - 3.0 pints of Imazapyr 4 SL per 5 - 100 gallons of water per acre when using ground equipment. For listed aquatic sites, use 1 quart of this product per acre. MSO should also be used at a rate of 1.5 to 2 pints per acre when making aquatic applications.
Amanda
4/3/24 -
Q:Can you use imazapyr on plateau resistant warm season grasses and wildflowers as a pre and post emergent3/17/24A:No it cannot be used on either of these sites.
Amanda
3/18/24
