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Perennial Ryegrass Weed Killer

Lolium perenne Herbicide

Description of Perennial Ryegrass (Lolium perenne):
Perennial ryegrass is a fast-germinating bunchgrass that is highly desired due to its quick establishment rates.
According to the manufacturer approved labels: The following 9 weed killers, applied at the listed application rates, will control Perennial Ryegrass.
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
2.5 fluid ounces per gallon
Cost Effectiveness:
Makes 9.6 gallons
at a cost of
$3.12 per gallon
Blanket Treatment
Label Rate:
4 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 6000 square feet
at a cost of
$4.99 per 1,000 sqft
Safe On
No safe on treatments listed. Please, review the label or contact the merchant for more information.
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.014 - 0.023 ounces per gallon
Cost Effectiveness:
Makes 55.37 - 88.592 gallons
at a cost of
$1.12 - $1.79 per gallon
Blanket Treatment
per
Label Rate:
0.029 - 0.046 ounces per 1,000 sqft
Cost Effectiveness:
Covers 27225 - 43560 square feet
at a cost of
$2.27 - $3.64 per 1,000 sqft
Safe On
Bahiagrass, Bentgrass, Bermudagrass, Buffalograss, Centipedegrass, Kentucky Bluegrass, Kikuyu Grass, Seashore Paspalum, St. Augustinegrass, and Zoysiagrass
Safe Rate:
0.014 - 0.023 ounces per gallon
or
0.029 - 0.046 ounces per 1,000 sqft
CertainLabel™ Calculator for Certainty & these grass types
Pre-Emergent
Post-Emergent
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Spot Treatment
No spot treatment rates listed. Please, review the label or contact the merchant for more information.
Blanket Treatment
Label Rate:
0.37 - 0.73 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 87120 - 174240 square feet
at a cost of
$0.84 - $1.68 per 1,000 sqft
Safe On
Bahiagrass, Bentgrass, Bermudagrass, Buffalograss, Carpetgrass, Centipedegrass, Fine Fescue, Kentucky Bluegrass, Perennial Ryegrass, Seashore Paspalum, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
0.37 - 0.73 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Dimension 2EW & these grass types
Bahiagrass, Bentgrass, Bermudagrass, Buffalograss, Carpetgrass, Centipedegrass, Fine Fescue, Kentucky Bluegrass, Perennial Ryegrass, Seashore Paspalum, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
0.37 - 0.73 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Dimension 2EW & these grass types
Bahiagrass, Bentgrass, Bermudagrass, Buffalograss, Carpetgrass, Centipedegrass, Fine Fescue, Kentucky Bluegrass, Perennial Ryegrass, Seashore Paspalum, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
0.37 - 0.73 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Dimension 2EW & these grass types
Bahiagrass, Bentgrass, Bermudagrass, Buffalograss, Carpetgrass, Centipedegrass, Fine Fescue, Kentucky Bluegrass, Perennial Ryegrass, Seashore Paspalum, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
0.37 - 0.73 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Dimension 2EW & these grass types
Bahiagrass, Bentgrass, Bermudagrass, Buffalograss, Carpetgrass, Centipedegrass, Fine Fescue, Kentucky Bluegrass, Perennial Ryegrass, Seashore Paspalum, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
0.37 - 0.73 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Dimension 2EW & these grass types
Pre-Emergent
Post-Emergent
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Spot Treatment
No spot treatment rates listed. Please, review the label or contact the merchant for more information.
Blanket Treatment
per
Label Rate:
0.034 ounces per 1,000 sqft
Cost Effectiveness:
Covers 43560 square feet
at a cost of
$1.26 per 1,000 sqft
Safe On
Bermudagrass and Zoysiagrass
Safe Rate:
0.034 ounces per 1,000 sqft
CertainLabel™ Calculator for Negate 37WG & these grass types
Pre-Emergent
Post-Emergent
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Spot Treatment
No spot treatment rates listed. Please, review the label or contact the merchant for more information.
Blanket Treatment
Label Rate:
0.2 - 0.4 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 80000 - 160000 square feet
at a cost of
$1.63 - $3.25 per 1,000 sqft
Instructions:
See label page 5 for more information. Transition zone.
Safe On
Bermudagrass, Buffalograss, and Zoysiagrass
Safe Rate:
0.1 - 0.8 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Revolver & these grass types
Pre-Emergent
Post-Emergent
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Spot Treatment
No spot treatment rates listed. Please, review the label or contact the merchant for more information.
Broadcast Treatment
Label Rate:
1.7 - 2.12 lbs per 1,000 sqft
Cost Effectiveness:
Covers 23529 - 29412 square feet
at a cost of
$4.53 - $5.67 per 1,000 sqft
Instructions:
Half rate application.
Broadcast Treatment
Label Rate:
3.4 - 4.25 lbs per 1,000 sqft
Cost Effectiveness:
Covers 11765 - 14706 square feet
at a cost of
$9.06 - $11.33 per 1,000 sqft
Instructions:
Full rate application.
Safe On
Bahiagrass, Bentgrass, Bermudagrass, Buffalograss, Carpetgrass, Centipedegrass, Fine Fescue, Kentucky Bluegrass, Kikuyu Grass, Perennial Ryegrass, Seashore Paspalum, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
2.3 - 4.25 lbs per 1,000 sqft
CertainLabel™ Calculator for Dimension 270G & these grass types
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.2 ounces per gallon
Cost Effectiveness:
Makes 30 gallons
at a cost of
$1.12 per gallon
Blanket Treatment
per
Label Rate:
0.069 ounces per 1,000 sqft
Cost Effectiveness:
Covers 87120 square feet
at a cost of
$0.39 per 1,000 sqft
Safe On
Bermudagrass, St. Augustinegrass, and Zoysiagrass
Safe Rate:
0.069 - 0.275 ounces per 1,000 sqft
CertainLabel™ Calculator for Fahrenheight & these grass types
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.008 - 0.012 ounces per gallon
Cost Effectiveness:
Makes 72.283 - 110.231 gallons
at a cost of
$2.78 - $4.23 per gallon
Blanket Treatment
per
Label Rate:
0.008 - 0.012 ounces per 1,000 sqft
Cost Effectiveness:
Covers 72478 - 109752 square feet
at a cost of
$2.79 - $4.22 per 1,000 sqft
Safe On
Bermudagrass and Zoysiagrass
Safe Rate:
0.008 - 0.012 ounces per gallon
or
0.008 - 0.012 ounces per 1,000 sqft
CertainLabel™ Calculator for Monument 75WG & these grass types
Pre-Emergent
Post-Emergent
| More Info | View Label
Spot Treatment
No spot treatment rates listed. Please, review the label or contact the merchant for more information.
Blanket Treatment
Label Rate:
1.1 - 1.47 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 217800 - 290400 square feet
at a cost of
$1.27 - $1.69 per 1,000 sqft
Instructions:
The lower rate is recommended for spring if spring transition is expected within a month. Higher rates may be used if spring transition is at least 4-6 weeks away or has already occurred and also for fall.
Safe On
Bermudagrass, Centipedegrass, St. Augustinegrass, and Zoysiagrass
Safe Rate:
1.1 - 1.47 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Coastal & these grass types

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