Home > Weed Killers > Primes Source Quinclorac 75 DF Herbicide
Primes Source Quinclorac 75 DF Herbicide
Selective post-emergent herbicide for broadleaf and grassy weed control
Quinclorac 75 DF 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 75 DF Select can be applied to both residential and non-residential turf. Quinclorac 75 DF 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 | 75.00 % |
| Other Ingredients | 25.00 % |
Mode of Action
Lipid Synthesis Inhibitors
Site of Action
(1) ACCase Inhibitor
Safe On
Click on a grass type below to see safe application rates:
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, Bentgrass, Bermudagrass, and Fine Fescue
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 2 pounds of Quinclorac Select 75 DF Herbicide per acre (or 0.73 oz per 1000 sq ft) in one year (1.5 lbs ai per acre per
year).
Mowing Instructions
Mowing Information. DO NOT mow 2 days before or after applying Quinclorac Select 75 DF Herbicide to maximize weed control and minimize potential
turf injury. Clippings from the first three mowings should be left on the treated area.
Water Instructions
If soil moisture is not sufficient prior to Quinclorac Select 75 DF Herbicide application, irrigation may improve weed control. For
best results, DO NOT water or irrigate for 24 hours after application. If rainfall does not occur in 2 to 7 days after application, irrigation of at
least 1/2 inch is required.
Before Seeding Instructions
The use of Quinclorac Select 75 DF Herbicide before or after seeding or overseeding a turf area will not significantly interfere with the turfgrass
seed germination and growth of those grass types identified as tolerant or moderately tolerant in Table 1 on the label. Consult Table 4 on the label for timing of
applications concerning any seeding, overseeding or sprigging situation.
CertainLabel™
Primes Source Quinclorac 75 DF Optimized Application Label Rate Calculator
Legend:
Control
Suppression
No Control
Spot Treatment:
per
Blanket Treatment:
per
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™ Primes Source Quinclorac 75 DF Label Rates & Calculator
for
these 18 turf types
Spot Treatment
per
Label Rate:
0.367 ounces per gallon
Cost Effectiveness:
Makes 43.597 gallons
at a cost of
$1.15 per gallon
at a cost of
$1.15 per gallon
Blanket Treatment
per
Label Rate:
0.367 ounces per 1,000 sqft
Cost Effectiveness:
Covers 43597 square feet
at a cost of
$1.15 per 1,000 sqft
at a cost of
$1.15 per 1,000 sqft
2
| Grass / Turf Types | Safe |
|---|---|
| Bentgrass |
|
2
Jump to
CertainLabel™ Primes Source Quinclorac 75 DF Label Rates & Calculator
for
Bentgrass
Spot Treatment
per
Label Rate:
0.123 - 0.245 ounces per gallon
Cost Effectiveness:
Makes 65.306 - 130.081 gallons
at a cost of
$0.38 - $0.76 per gallon
at a cost of
$0.38 - $0.76 per gallon
Instructions:
See label page 10 for more information.
Blanket Treatment
per
Label Rate:
0.123 - 0.245 ounces per 1,000 sqft
Cost Effectiveness:
Covers 65306 - 130081 square feet
at a cost of
$0.38 - $0.76 per 1,000 sqft
at a cost of
$0.38 - $0.76 per 1,000 sqft
Instructions:
See label page 10 for more information.
3
| Grass / Turf Types | Safe |
|---|---|
| Bermudagrass |
|
3
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CertainLabel™ Primes Source Quinclorac 75 DF Label Rates & Calculator
for
Bermudagrass
Spot Treatment
per
Label Rate:
0.367 ounces per gallon
Cost Effectiveness:
Makes 43.597 gallons
at a cost of
$1.15 per gallon
at a cost of
$1.15 per gallon
Spot Treatment
per
Label Rate:
0.367 ounces per gallon
Cost Effectiveness:
Makes 43.597 gallons
at a cost of
$1.15 per gallon
at a cost of
$1.15 per gallon
Blanket Treatment
per
Label Rate:
0.367 ounces per 1,000 sqft
Cost Effectiveness:
Covers 43597 square feet
at a cost of
$1.15 per 1,000 sqft
at a cost of
$1.15 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 sections).
Blanket Treatment
per
Label Rate:
0.367 ounces per 1,000 sqft
Cost Effectiveness:
Covers 43597 square feet
at a cost of
$1.15 per 1,000 sqft
at a cost of
$1.15 per 1,000 sqft
4
| Grass / Turf Types | Safe |
|---|---|
| Fine Fescue |
|
4
Jump to
CertainLabel™ Primes Source Quinclorac 75 DF Label Rates & Calculator
for
Fine Fescue
Spot Treatment
per
Label Rate:
0.367 ounces per gallon
Cost Effectiveness:
Makes 43.597 gallons
at a cost of
$1.15 per gallon
at a cost of
$1.15 per gallon
Blanket Treatment
per
Label Rate:
0.367 ounces per 1,000 sqft
Cost Effectiveness:
Covers 43597 square feet
at a cost of
$1.15 per 1,000 sqft
at a cost of
$1.15 per 1,000 sqft
Instructions:
Apply Quinclorac Select 75 DF Herbicide to fine fescue only when it is part of a blend.
1
1
Jump to
CertainLabel™ Primes Source Quinclorac 75 DF Label Rates & Calculator
for
these 15 weeds
Spot Treatment
per
Label Rate:
0.367 ounces per gallon
Cost Effectiveness:
Makes 43.597 gallons
at a cost of
$1.15 per gallon
at a cost of
$1.15 per gallon
Blanket Treatment
per
Label Rate:
0.367 ounces per 1,000 sqft
Cost Effectiveness:
Covers 43597 square feet
at a cost of
$1.15 per 1,000 sqft
at a cost of
$1.15 per 1,000 sqft
2
| Weeds | Pre- Emergent |
Post-Emergent |
|---|---|---|
| Foxtail, Giant |
|
|
| Foxtail, Yellow |
|
|
| Signalgrass, Broadleaf |
|
|
2
Jump to
CertainLabel™ Primes Source Quinclorac 75 DF Label Rates & Calculator
for
these 3 weeds
Spot Treatment
per
Label Rate:
0.367 ounces per gallon
Cost Effectiveness:
Makes 43.597 gallons
at a cost of
$1.15 per gallon
at a cost of
$1.15 per gallon
Blanket Treatment
per
Label Rate:
0.367 ounces per 1,000 sqft
Cost Effectiveness:
Covers 43597 square feet
at a cost of
$1.15 per 1,000 sqft
at a cost of
$1.15 per 1,000 sqft
Instructions:
Under certain conditions, application of Quinclorac Select 75 DF Herbicide 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 Select 75 DF Herbicide + methylated seed oil are applied either before second tiller or as weed grasses mature.
3
| Weeds | Pre- Emergent |
Post-Emergent |
|---|---|---|
| Crabgrass, Large |
|
|
| Crabgrass, Smooth |
|
|
3
Jump to
CertainLabel™ Primes Source Quinclorac 75 DF Label Rates & Calculator
for
these 2 weeds
Spot Treatment
per
Label Rate:
0.367 ounces per gallon
Cost Effectiveness:
Makes 43.597 gallons
at a cost of
$1.15 per gallon
at a cost of
$1.15 per gallon
Blanket Treatment
per
Label Rate:
0.367 ounces per 1,000 sqft
Cost Effectiveness:
Covers 43597 square feet
at a cost of
$1.15 per 1,000 sqft
at a cost of
$1.15 per 1,000 sqft
Instructions:
Under certain conditions, application of Quinclorac Select 75 DF Herbicide 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 Select 75 DF Herbicide + 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 Select 75 DF Herbicide. If control failure occurs following a full or split application, DO NOT reapply Quinclorac Select 75 DF Herbicide. Change to a herbicide with a different mode of action.
4
| Weeds | Pre- Emergent |
Post-Emergent |
|---|---|---|
| Daisy, English |
|
|
4
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CertainLabel™ Primes Source Quinclorac 75 DF Label Rates & Calculator
for
English Daisy
Spot Treatment
per
Label Rate:
0.367 ounces per gallon
Cost Effectiveness:
Makes 43.597 gallons
at a cost of
$1.15 per gallon
at a cost of
$1.15 per gallon
Blanket Treatment
per
Label Rate:
0.367 ounces per 1,000 sqft
Cost Effectiveness:
Covers 43597 square feet
at a cost of
$1.15 per 1,000 sqft
at a cost of
$1.15 per 1,000 sqft
Instructions:
Tank mix partner or sequential application required. NOT FOR USE to control this weed in California.
5
| Weeds | Pre- Emergent |
Post-Emergent |
|---|---|---|
| Dandelion, Common |
|
|
5
Jump to
CertainLabel™ Primes Source Quinclorac 75 DF Label Rates & Calculator
for
Common Dandelion
Spot Treatment
per
Label Rate:
0.367 ounces per gallon
Cost Effectiveness:
Makes 43.597 gallons
at a cost of
$1.15 per gallon
at a cost of
$1.15 per gallon
Blanket Treatment
per
Label Rate:
0.367 ounces per 1,000 sqft
Cost Effectiveness:
Covers 43597 square feet
at a cost of
$1.15 per 1,000 sqft
at a cost of
$1.15 per 1,000 sqft
Instructions:
Tank mix partner or sequential application required.
6
| Weeds | Pre- Emergent |
Post-Emergent |
|---|---|---|
| Torpedograss |
|
|
6
Jump to
CertainLabel™ Primes Source Quinclorac 75 DF Label Rates & Calculator
for
Torpedograss
Spot Treatment
per
Label Rate:
0.367 ounces per gallon
Cost Effectiveness:
Makes 43.597 gallons
at a cost of
$1.15 per gallon
at a cost of
$1.15 per gallon
Blanket Treatment
per
Label Rate:
0.367 ounces per 1,000 sqft
Cost Effectiveness:
Covers 43597 square feet
at a cost of
$1.15 per 1,000 sqft
at a cost of
$1.15 per 1,000 sqft
Instructions:
Make 3 sequential applications of 0.245 oz (0.50 lb ai/A) of Quinclorac Select 75 DF Herbicide per 1000 sq ft at 14- to 21-day intervals.