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Prime Source Quinclorac Select 1.5L Herbicide

Selective post-emergent herbicide for efficient weed control

Prime Source Quinclorac Select 1.5L Logo
Quinclorac 1.5L Select™ is a selective, post-emergent herbicide that can be safely applied to many types of turf to control a variety of broadleaf and grassy weeds. Quinclorac 1.5L Select can be applied to both residential and non-residential turf. Quinclorac 1.5L Select can be applied from 7 days before seeding and up to 28 days after emergence on selected weeds. The use of a methylated seed oil, such as Duo Stick Select is recommended to greatly enhance the effectiveness of the product.

    Active Ingredient %
    Quinclorac 18.92 %
    Other Ingredients 81.08 %
    Mode of Action
    Lipid Synthesis Inhibitors
    Site of Action
    (1) ACCase Inhibitor
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    $0.87 / fl oz
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    Available on Do My Own

    $1.12 / fl oz
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    Not Safe On
    No not safe on treatments listed. Please, review the label or contact the merchant for more information.
    Maximum Yearly Limits
     DO NOT apply more than 128 fluid ounces of Quinclorac 1.5L Select herbicide per acre (or 2.9 fl. oz. per 1,000 sq. ft.) in one year (1.4 lbs. aeper acre per year).
    Mowing Instructions
    DO NOT mow 2 days before or after applying Quinclorac 1.5L Select to maximize weed control and minimize potential turf injury. Clippings fromthe first three mowings after application should be left on the treated area.
    Before Seeding Instructions
    The use of Quinclorac 1.5L Select before or after seeding or overseeding a turf area will not significantly interfere with the turf grass seedgermination and growth of those grass types identified as tolerant or moderately tolerant in Table 1. Consult Table 4 on label for timing ofapplications concerning any seeding, overseeding or sprigging situation.
    Surfactant Instructions
    Methylated seed oil is the preferred adjuvant for post-emergence applications. However, if an MSO is not available in your region, the useof a crop oil concentrate or other high-quality surfactant must be used in the spray tank at the time of application.
    CertainLabel™

    Prime Source Quinclorac Select 1.5L Optimized Application Label Rate Calculator

    Legend:
    Control
    Suppression
    No Control
    1
    Grass / Turf Types Safe
    Annual Bluegrass
    Annual Ryegrass
    Bahiagrass
    Buffalograss
    Centipedegrass
    Chewings Fescue
    Colonial Bentgrass
    Dichondra
    Hard Fescue
    Kentucky Bluegrass
    Perennial Ryegrass
    Red Fescue
    Roughstalk Bluegrass
    Seashore Paspalum
    Seaside Bentgrass
    St. Augustinegrass
    Tall Fescue
    Zoysiagrass
    1
    Jump to CertainLabel™ Prime Source Quinclorac Select 1.5L Label Rates & Calculator for these 18 turf types
    Spot Treatment
    Label Rate:
    185.6 fluid ounces per gallon
    Cost Effectiveness:
    Makes 0.345 gallons
    at a cost of
    $160.66 per gallon
    Blanket Treatment
    Label Rate:
    1.45 fluid ounces per 1,000 sqft
    Cost Effectiveness:
    Covers 44138 square feet
    at a cost of
    $1.26 per 1,000 sqft
    2
    Spot Treatment
    Label Rate:
    64 - 128 fluid ounces per gallon
    Cost Effectiveness:
    Makes 0.5 - 1 gallons
    at a cost of
    $55.40 - $110.80 per gallon
    Instructions:
    See label page 10 for more information.
    Blanket Treatment
    Label Rate:
    0.5 - 1 fluid ounces per 1,000 sqft
    Cost Effectiveness:
    Covers 64000 - 128000 square feet
    at a cost of
    $0.43 - $0.87 per 1,000 sqft
    Instructions:
    See label page 10 for more information.
    3
    Spot Treatment
    Label Rate:
    185.6 fluid ounces per gallon
    Cost Effectiveness:
    Makes 0.345 gallons
    at a cost of
    $160.66 per gallon
    Blanket Treatment
    Label Rate:
    1.45 fluid ounces per 1,000 sqft
    Cost Effectiveness:
    Covers 44138 square feet
    at a cost of
    $1.26 per 1,000 sqft
    Instructions:
    Yellowing that occurs on these species can be reduced by the addition of chelated iron or sprayable soluble nitrogen fertilizer (see Application Information and Addition of Adjuvants).
    4
    Spot Treatment
    Label Rate:
    185.6 fluid ounces per gallon
    Cost Effectiveness:
    Makes 0.345 gallons
    at a cost of
    $160.66 per gallon
    Instructions:
    Apply Quinclorac 1.5L Select herbicide to fine fescue only when it is part of a blend.
    Blanket Treatment
    Label Rate:
    1.45 fluid ounces per 1,000 sqft
    Cost Effectiveness:
    Covers 44138 square feet
    at a cost of
    $1.26 per 1,000 sqft
    Instructions:
    Apply Quinclorac 1.5L Select herbicide to fine fescue only when it is part of a blend.
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    2
    Spot Treatment
    Label Rate:
    1.45 fluid ounces per gallon
    Cost Effectiveness:
    Makes 44.138 gallons
    at a cost of
    $1.26 per gallon
    Blanket Treatment
    Label Rate:
    1.45 fluid ounces per 1,000 sqft
    Cost Effectiveness:
    Covers 44138 square feet
    at a cost of
    $1.26 per 1,000 sqft
    Instructions:
    Under certain conditions, application of Quinclorac 1.5L Select made to annual grasses at 2 to 4 tiller may not provide complete control. A sequential application will be required for grass control in these situations. Optimum control is achieved when applications of Quinclorac 1.5L Select + methylated seed oil are applied either before second tiller or as weed grasses mature.
    3
    Spot Treatment
    Label Rate:
    1.45 fluid ounces per gallon
    Cost Effectiveness:
    Makes 44.138 gallons
    at a cost of
    $1.26 per gallon
    Blanket Treatment
    Label Rate:
    1.45 fluid ounces per 1,000 sqft
    Cost Effectiveness:
    Covers 44138 square feet
    at a cost of
    $1.26 per 1,000 sqft
    Instructions:
    Under certain conditions, application of Quinclorac 1.5L Select made to annual grasses at 2 to 4 tiller may not provide complete control. A sequential application will be required for grass control in these situations. Optimum control is achieved when applications of Quinclorac 1.5L Select + methylated seed oil are applied either before second tiller or as weed grasses mature. Biotypes of large and smooth crabgrass in California have shown varied response to Quinclorac 1.5L Select. If control failure occurs following a full or split application, DO NOT reapply Quinclorac 1.5L Select. Change to a herbicide with a different mode of action.
    4
    Spot Treatment
    Label Rate:
    1.45 fluid ounces per gallon
    Cost Effectiveness:
    Makes 44.138 gallons
    at a cost of
    $1.26 per gallon
    Blanket Treatment
    Label Rate:
    1.45 fluid ounces per 1,000 sqft
    Cost Effectiveness:
    Covers 44138 square feet
    at a cost of
    $1.26 per 1,000 sqft
    Instructions:
    Tank mix partner or sequential application required. NOT FOR USE to control this weed in California.
    5
    Spot Treatment
    Label Rate:
    1.45 fluid ounces per gallon
    Cost Effectiveness:
    Makes 44.138 gallons
    at a cost of
    $1.26 per gallon
    Blanket Treatment
    Label Rate:
    1.45 fluid ounces per 1,000 sqft
    Cost Effectiveness:
    Covers 44138 square feet
    at a cost of
    $1.26 per 1,000 sqft
    Instructions:
    Tank mix partner or sequential application required.
    6
    Spot Treatment
    Label Rate:
    1.45 fluid ounces per gallon
    Cost Effectiveness:
    Makes 44.138 gallons
    at a cost of
    $1.26 per gallon
    Blanket Treatment
    Label Rate:
    1.45 fluid ounces per 1,000 sqft
    Cost Effectiveness:
    Covers 44138 square feet
    at a cost of
    $1.26 per 1,000 sqft
    Instructions:
    Make 2 sequential applications of 1.0 fl. oz. (0.51 lb. AI/A) of Quinclorac 1.5L Select per 1,000 sq. ft. and an additional sequential application up to 0.90 fl. oz. (0.46 lb. AI/A) of Quinclorac 1.5L Select per 1,000 sq. ft. at 14- to 21-day intervals. Biotypes of large and smooth crabgrass in California have shown varied response to Quinclorac 1.5L Select. If control failure occurs following a full or split application, DO NOT reapply Quinclorac 1.5L Select. Change to a herbicide with a different mode of action.
    7
    Spot Treatment
    Label Rate:
    1.45 fluid ounces per gallon
    Cost Effectiveness:
    Makes 44.138 gallons
    at a cost of
    $1.26 per gallon
    Blanket Treatment
    Label Rate:
    1.45 fluid ounces per 1,000 sqft
    Cost Effectiveness:
    Covers 44138 square feet
    at a cost of
    $1.26 per 1,000 sqft
    Instructions:
    Make 2 sequential applications of 1.0 fl. oz. (0.51 lb. AI/A) of Quinclorac 1.5L Select per 1,000 sq. ft. and an additional sequential application up to 0.90 fl. oz. (0.46 lb. AI/A) of Quinclorac 1.5L Select per 1,000 sq. ft. at 14- to 21-day intervals.
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