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Torpedograss Weed Killer

Panicum repens Herbicide

Description of Torpedograss (panicum repens):
Torpedograss is one of the most invasive species in Florida, Texas, and generally down south. It gets its name from the sharply pointed and torpedo-like tips. It grows up to 3 feet tall and has hairy sheaths on the upper margins of the leaves. It can re-establish itself from just a tiny fragment of it's a rhizome. The leaves are flat and rolled, with a white and waxy covering.  
According to the manufacturer approved labels: The following 11 weed killers, applied at the listed application rates, will control Torpedograss.
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.9 - 1 fluid ounces per gallon
Cost Effectiveness:
Makes 64 - 71.111 gallons
at a cost of
$0.94 - $1.04 per gallon
Blanket Treatment
Application Interval:
14 - 21 days
Label Rate:
0.9 - 1 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 64000 - 71111 square feet
at a cost of
$0.94 - $1.04 per 1,000 sqft
Instructions:
Make 2 sequential applications of 1.0 fl oz (0.51 lb ae/A) of Drive XLR8 per 1,000 sq ft and an additional sequential application up to 0.9 fl oz (0.46 lb ae/A) of Drive XLR8 at 14 to 21 day intervals.
Safe On
Annual Bluegrass, Annual Ryegrass, Bermudagrass, Buffalograss, Chewings Fescue, Fine Fescue, Hard Fescue, Kentucky Bluegrass, Perennial Ryegrass, Red Fescue, Roughstalk Bluegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
1.47 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Drive XLR8 & these grass types
Bentgrass
Safe Rate:
0.5 - 1 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Drive XLR8 & Bentgrass
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:
2.4 lbs per 1,000 sqft
Cost Effectiveness:
Covers 5000 square feet
at a cost of
$4.89 per 1,000 sqft
Safe On
Annual Ryegrass, Bermudagrass, Buffalograss, Chewings Fescue, Fine Fescue, Hard Fescue, Kentucky Bluegrass, Perennial Ryegrass, Red Fescue, Seashore Paspalum, Tall Fescue, and Zoysiagrass
Safe Rate:
2.4 lbs per 1,000 sqft
CertainLabel™ Calculator for BioAdvanced All-in-One Weed & Feed with Microfeed Action & these grass types
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
0.367 ounces per gallon
Cost Effectiveness:
Makes 43.597 gallons
at a cost of
$1.09 per gallon
Instructions:
For these weeds, apply 0.245 oz of Quali-Pro Quinclorac 75 DF per 1000 sq ft as 3 sequential applications at 14 – 21 day intervals.
Blanket Treatment
Application Interval:
14 - 21 days
per
Label Rate:
0.367 ounces per 1,000 sqft
Cost Effectiveness:
Covers 43597 square feet
at a cost of
$1.09 per 1,000 sqft
Instructions:
For these weeds, apply 0.245 oz of Quali-Pro Quinclorac 75 DF per 1000 sq ft as 3 sequential applications at 14 – 21 day intervals.
Safe On
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, and Zoysiagrass
Safe Rate:
0.367 ounces per gallon
or
0.367 ounces per 1,000 sqft
CertainLabel™ Calculator for Quinclorac 75 DF & these grass types
Bentgrass and Bermudagrass
Safe Rate:
0.367 ounces per gallon
or
0.367 ounces per 1,000 sqft
CertainLabel™ Calculator for Quinclorac 75 DF & these grass types
Fine Fescue
Safe Rate:
0.367 ounces per gallon
or
0.367 ounces per 1,000 sqft
CertainLabel™ Calculator for Quinclorac 75 DF & Fine Fescue
Pre-Emergent
Post-Emergent
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Spot Treatment
Label Rate:
1.45 fluid ounces per gallon
Cost Effectiveness:
Makes 22.069 gallons
at a cost of
$2.83 per gallon
Blanket Treatment
Label Rate:
1.45 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 22069 square feet
at a cost of
$2.83 per 1,000 sqft
Instructions:
Make 2 sequential applications of 1.0 fl oz (0.51 lb ae/A) of QUIN KILL MAX per 1000 sq ft and an additional sequential application up to 0.90 fl oz (0.46 lb ae/A) of QUIN KILL MAX per 1000 sq ft at 14- to 21-day intervals.
Safe On
Annual Bluegrass, Annual Ryegrass, Buffalograss, Kentucky Bluegrass, Perennial Ryegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
1.45 fluid ounces per gallon
or
1.45 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for QuinKill Max & these grass types
Chewings Fescue, Hard Fescue, Red Fescue, Roughstalk Bluegrass, and Seashore Paspalum
Safe Rate:
1.45 fluid ounces per gallon
or
1.45 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for QuinKill Max & these grass types
Bentgrass
Safe Rate:
0.5 - 1 fluid ounces per gallon
or
0.5 - 1 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for QuinKill Max & Bentgrass
Bermudagrass
Safe Rate:
1.45 fluid ounces per gallon
or
1.45 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for QuinKill Max & Bermudagrass
Fine Fescue
Safe Rate:
1.45 fluid ounces per gallon
or
1.45 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for QuinKill Max & Fine Fescue
Pre-Emergent
Post-Emergent
| More Info | View Label
Spot Treatment
Label Rate:
0.75 fluid ounces per gallon
Cost Effectiveness:
Makes 42.667 gallons
at a cost of
$1.86 per gallon
Instructions:
See label for growth stage in inches. Use 24 fl oz/A per application. Up to three applications may be needed for complete control.
Blanket Treatment
Label Rate:
0.55 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 58080 square feet
at a cost of
$1.37 per 1,000 sqft
Instructions:
See label for growth stage in inches. Use 24 fl oz/A per application. Up to three applications may be needed for complete control.
Safe On
Chewings Fescue, Fine Fescue, Hard Fescue, and Red Fescue
Safe Rate:
0.75 fluid ounces per gallon
or
0.18 - 0.37 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Fusilade II & these grass types
Tall Fescue
Safe Rate:
0.75 fluid ounces per gallon
or
0.11 - 0.14 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Fusilade II & Tall Fescue
Zoysiagrass
Safe Rate:
0.75 fluid ounces per gallon
or
0.07 - 0.09 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Fusilade II & Zoysiagrass
Pre-Emergent
Post-Emergent
| More Info | View Label
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.
Safe On
Annual Bluegrass, Annual Ryegrass, Bahiagrass, Bermudagrass, 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, and Zoysiagrass
Safe Rate:
185.6 fluid ounces per gallon
or
1.45 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Prime Source Quinclorac Select 1.5L & these grass types
Annual Bluegrass, Annual Ryegrass, Bahiagrass, Bermudagrass, 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, and Zoysiagrass
Safe Rate:
185.6 fluid ounces per gallon
or
1.45 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Prime Source Quinclorac Select 1.5L & these grass types
Bentgrass
Safe Rate:
64 - 128 fluid ounces per gallon
or
0.5 - 1 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Prime Source Quinclorac Select 1.5L & Bentgrass
Fine Fescue
Safe Rate:
185.6 fluid ounces per gallon
or
1.45 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Prime Source Quinclorac Select 1.5L & Fine Fescue
Pre-Emergent
Post-Emergent
| More Info | View Label
Spot Treatment
Label Rate:
14.98 - 44.8 fluid ounces per gallon
Cost Effectiveness:
Makes 0.223 - 0.668 gallons
at a cost of
$194.61 - $582.18 per gallon
Blanket Treatment
Label Rate:
0.12 - 0.35 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 28571 - 85470 square feet
at a cost of
$1.52 - $4.55 per 1,000 sqft
Safe On
Bahiagrass, Bermudagrass, Buffalograss, Carpetgrass, Centipedegrass, Kikuyu Grass, Seashore Paspalum, St. Augustinegrass, and Zoysiagrass
Safe Rate:
0.23 - 0.35 fluid ounces per gallon
or
0.23 - 0.35 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Dismiss NXT & these grass types
Fine Fescue, Kentucky Bluegrass, Roughstalk Bluegrass, and Tall Fescue
Safe Rate:
0.12 - 0.23 fluid ounces per gallon
or
0.12 - 0.23 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Dismiss NXT & these grass types
Bentgrass and Perennial Ryegrass
Safe Rate:
0.12 fluid ounces per gallon
or
0.12 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Dismiss NXT & these grass types
Pre-Emergent
Post-Emergent
| More Info | View Label
Spot Treatment
Label Rate:
4 - 7.9 fluid ounces per gallon
Cost Effectiveness:
Makes 12.152 - 24 gallons
at a cost of
$3.44 - $6.80 per gallon
Blanket Treatment
Label Rate:
4 - 7.9 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 12152 - 24000 square feet
at a cost of
$3.44 - $6.80 per 1,000 sqft
Safe On
Bermudagrass, Buffalograss, Centipedegrass, Seashore Paspalum, and Zoysiagrass
Safe Rate:
4 - 7.9 fluid ounces per gallon
or
4 - 7.9 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Solitare WSL & these grass types
Fine Fescue, Kentucky Bluegrass, Perennial Ryegrass, Roughstalk Bluegrass, and Tall Fescue
Safe Rate:
4 - 6.5 fluid ounces per gallon
or
4 - 6.5 fluid ounces per 1,000 sqft
CertainLabel™ Calculator for Solitare WSL & these grass types
Pre-Emergent
Post-Emergent
| More Info | View Label
Spot Treatment
Label Rate:
0.75 - 1.5 ounces per gallon
Cost Effectiveness:
Makes 10.667 - 21.333 gallons
at a cost of
$6.69 - $13.38 per gallon
Blanket Treatment
per
Label Rate:
0.75 - 1.5 ounces per 1,000 sqft
Cost Effectiveness:
Covers 10667 - 21333 square feet
at a cost of
$6.69 - $13.38 per 1,000 sqft
Safe On
Bermudagrass, Buffalograss, Centipedegrass, Seashore Paspalum, and Zoysiagrass
Safe Rate:
0.75 - 1.5 ounces per gallon
or
0.75 - 1.5 ounces per 1,000 sqft
CertainLabel™ Calculator for Solitare & these grass types
Kentucky Bluegrass, Perennial Ryegrass, Roughstalk Bluegrass, and Tall Fescue
Safe Rate:
0.75 - 1 ounces per gallon
or
0.75 - 1 ounces per 1,000 sqft
CertainLabel™ Calculator for Solitare & these grass types
Pre-Emergent
Post-Emergent
| More Info | View Label
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
Label Rate:
0.367 ounces per gallon
Cost Effectiveness:
Makes 43.597 gallons
at a cost of
$1.10 per gallon
Blanket Treatment
per
Label Rate:
0.367 ounces per 1,000 sqft
Cost Effectiveness:
Covers 43597 square feet
at a cost of
$1.10 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.
Safe On
Annual Bluegrass, Annual Ryegrass, Bahiagrass, Bermudagrass, Bermudagrass, Buffalograss, Centipedegrass, Chewings Fescue, Colonial Bentgrass, Dichondra, Fine Fescue, Hard Fescue, Kentucky Bluegrass, Perennial Ryegrass, Red Fescue, Roughstalk Bluegrass, Seashore Paspalum, Seaside Bentgrass, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
0.367 ounces per gallon
or
0.367 ounces per 1,000 sqft
CertainLabel™ Calculator for Primes Source Quinclorac 75 DF & these grass types
Annual Bluegrass, Annual Ryegrass, Bahiagrass, Bermudagrass, Bermudagrass, Buffalograss, Centipedegrass, Chewings Fescue, Colonial Bentgrass, Dichondra, Fine Fescue, Hard Fescue, Kentucky Bluegrass, Perennial Ryegrass, Red Fescue, Roughstalk Bluegrass, Seashore Paspalum, Seaside Bentgrass, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
0.367 ounces per gallon
or
0.367 ounces per 1,000 sqft
CertainLabel™ Calculator for Primes Source Quinclorac 75 DF & these grass types
Annual Bluegrass, Annual Ryegrass, Bahiagrass, Bermudagrass, Bermudagrass, Buffalograss, Centipedegrass, Chewings Fescue, Colonial Bentgrass, Dichondra, Fine Fescue, Hard Fescue, Kentucky Bluegrass, Perennial Ryegrass, Red Fescue, Roughstalk Bluegrass, Seashore Paspalum, Seaside Bentgrass, St. Augustinegrass, Tall Fescue, and Zoysiagrass
Safe Rate:
0.367 ounces per gallon
or
0.367 ounces per 1,000 sqft
CertainLabel™ Calculator for Primes Source Quinclorac 75 DF & these grass types
Bentgrass
Safe Rate:
0.123 - 0.245 ounces per gallon
or
0.123 - 0.245 ounces per 1,000 sqft
CertainLabel™ Calculator for Primes Source Quinclorac 75 DF & Bentgrass

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