Quicksilver T&O Herbicide

Quicksilver T&O Herbicide, manufactured by FMC Technologies, is specially formulated for selective post-emergent broadleaf weed control on industrial sites, rangelands, rights-of-ways, and fencerows. Q

This suspended concentrate works great on weeds and moss. Its fast-acting formula penetrates the plant’s cells, and you will noticeably see a difference in about 24 hours or less.

Universities and golf courses have tested Quicksilver T&O Herbicide, demonstrating no signs of phytotoxicity. Enlist Quicksilver to finally destroy the weeds and moss growing in your lawn or golf course.

Tools Needed

It must be applied with a hose-end sprayer, handheld pump sprayer, backpack sprayer, or spray rig. For small lawn jobs, we recommend a handheld 1-gallon pump sprayer or a 4-gallon backpack sprayer.

How to Use

• Step 1: Determine how much Quicksilver T&O Herbicide you will need by measuring 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). Quicksilver can be used as a stand-alone product or mixed with other herbicides. As a stand-alone, apply Quicksilver T&O Herbicide using 0.023 to 0.048 fl. oz. per 1,000 sq. ft. For acreage applications, use 0.9 to 2.1 oz. of product per 20 to 175 gallons of water per acre. For spot treatments, use 0.030 fl. oz. of Quicksilver in 1 to 2 gallons of water to treat 1,000 sq. ft. For example, if you calculate a treatment of 3,000 sq. ft, mix 0.090 fl. oz. of Quicksilver in at least 3 gallons of water. Do not apply more than 6.7 oz. of product per acre per application.
• Step 2: Fill your sprayer halfway with the required amount of water, then add the appropriate measured amount of Quicksilver Herbicide based on your calculations. Add the remaining half of water to the sprayer, close the lid, and agitate the sprayer until the product is well-mixed. 
• Step 3: Spray target weeds until wet, but avoid spray solution runoff and over-application. A good technique to practice is to avoid side-to-side movement of the nozzle when spraying. It is best to spray the nozzle directly with no movement close to the weeds or moss to ensure proper application.
• Step 4: If you believe a secondary application is needed to treat an area properly, wait two weeks after the initial application and reapply.

Where to Use

Quicksilver Herbicide can be used in and around ornamental lawns, turfgrass, stone-covered yards established in institutional, ornamental, residential/domestic sites, apartment complexes, condominiums, patient care areas of nursing homes, mental institutions, hospitals, convalescent homes, hospitals, schools, museums, libraries, sports facilities, golf courses, and office buildings. 

The warm-seasoned grasses to be treated are common and hybrid Bermudagrass, bahiagrass, buffalograss, centipedegrass, seashore paspalum, St. Augustine grass, and zoysiagrass. 

Cool-seasoned grasses to be treated are creeping bentgrass, colonial bentgrass, annual bluegrass, Kentucky bluegrass, fine fescues, red fescues, tall fescues, and perennial ryegrass. 

When to Use

Quicksilver T&O Herbicide should be used when unwanted weeds are growing on the property. Prime time for application is in the early spring season when weeds begin to emerge.

Apply when turfgrasses are well-established, as injury may occur to underdeveloped lawns. 

Applications to dormant warm-seasoned grasses are permitted. Avoid applications when warm-seasoned grasses are transitioning into or out of dormancy.

Safety Information

Quicksilver T&O Herbicide is safe to use around children and pets when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when mixing and applying this product.

Do not enter nor allow others and pets to enter treated areas until the sprays have dried.

Keep out of reach of children and animals.

Special Considerations

Quicksilver T&O Herbicide can be used with a surfactant if needed, depending on the treatment area.

Though warm-season grasses are generally tolerant to Quicksilver applications, slight yellowing may occur 3 to 7 days after treatment if the grass is under stress. If you are unsure, you can check for turf tolerance by spraying your solution in a small area and observing the results.