2014 January

Mass Approves Clipper 2014

MASS SAY’S “CLIPPER’S A GO” for 2014

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MDAR/MassDEP 1 June 2013 -reposted here 2014
CLIPPER® HERBICIDE PRODUCT EVALUATION AND
RECOMMENDATION
(June 2013)

MDAR/MassDEP 2 June 2013
This document is a review of the aquatic herbicide Clipper® (EPA. Reg. No. 59639-161; Valent
Biosciences Corp.). It contains product-specific aspects related to use characterization, inert
formulation ingredients and adjuvants, and toxicity and effects of these ingredients to human
health and non-target organisms. This document complements the MDAR/MassDEP review of
the active ingredient flumioxazin (MDAR/MassDEP 2013).
1. Product Formulation
The product label indicates that the Clipper Herbicide is formulated as water dispersible granules
containing 51% flumioxazin by mass (Valent Corp., 2012). The MSDS document indicates that
the formulation also contains kaolin clay as a carrier at approximately 16% by mass. The identity
of the other ingredients (also referred to as inerts) in Clipper Herbicide is considered proprietary;
therefore, the manufacturer does not identify the other ingredients on the general or supplemental
product labels or material safety data sheets (MSDS).
Proprietary information on the other formulation ingredients was obtained through a request for a
Confidential Statement of Formula. The proprietary ingredients were evaluated as part of this
review, but cannot be disclosed here for reasons of confidentiality.
The product label indicates that treatment of emergent vegetation requires the addition of spray
adjuvants to the tank mix. As directed on the label, only adjuvants labeled for aquatic use should
be utilized. Specific recommendations for adjuvants include those that contain non-ionic
surfactants.
2 Use Characterization
2.1. Use Sites
The product label for the flumioxazin-formulated Clipper Herbicide specifies that this product
may be applied for the control of vegetation in aquatic sites. Clipper Herbicide provides control
of various submerged, emergent, and floating aquatic plants. The product may be applied directly
to the water where there is limited or no outflow, including wetlands, lakes, fresh water ponds
and reservoirs (Valent Corp., 2012).
2.2. Application Methods
Clipper Herbicide is applied as a water-based solution having a pH of 5 to 7. If treating floating
or emerged weeds the addition of an adjuvant to the tank mix is needed. The product may be
broadcast applied to the water surface or injected below the water surface. The label suggests
that early morning applications may enhance weed control. The product may be applied by
backpack or handgun sprayer, airboat, helicopter, airplane or other application equipment that is
MDAR/MassDEP 3 June 2013
capable of thorough coverage of target plant foliage. Subsurface application may be done using
weighted trailing hoses to ensure the release of the herbicide under the surface and throughout
the biomass of aquatic vegetation. In situations where aquatic vegetation is dense, the label
suggests that up to half of the water body be treated at a time to avoid a rapid decrease in
dissolved oxygen caused by vegetation breakdown. It also notes that the remaining area of the
water body can be treated 10 to 14 days later.

Clipper Specifics!

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SPECIFICS

Here are the specific use details that everyone has been asking for. If you do not see your situation listed here, just ask and we will assist!

Product Used On

bayous
canals
drainage ditches
lakes
marshes
ponds
reservoirsDuckweed covered pond without Clipper

Pests

alligator weed
frogs-bit
water fern
water lettuce
water pennywort
filamentous algae
coontail
duckweed
fanwort
cabomba
hydrilla
pondweed
curlyleaf pondweed
sago pondweed
watermeal
Eurasian watermilfoil
variable-leaf watermilfoil

State Registrations*

Alabama
Arizona
Arkansas
Colorado
Connecticut
Delaware
Florida
Georgia
Hawaii
Idaho
Illinois
Indiana
Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
Montana
Nebraska
Nevada
New Hampshire
New Jersey
New Mexico
North Carolina
North Dakota
Ohio
Oklahoma
Oregon
Pennsylvania
Puerto Rico
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Vermont
Virginia
Washington
Washington, DC
West Virginia
Wisconsin
Wyoming

Clipper Herbicide is registered for use in the states above. As always, be sure to check to make sure a specific use pattern is ‘ok’ in your location before use. You can contact your local state agency for more information and the latest filings or approvals.

Clipper Herbicide Training Instructions

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Introduction

Clipper is a fast-acting, contact aquatic herbicide that controls selected submerged and floating aquatic plants.

Clipper delivers:

  • Rapid and selective control of invasive and nuisance plants, like cabomba, watermeal, duckweed, watermilfoil, water lettuce, giant salvinia, pondweeds and more
  • Dissipates quickly from the water column = minimal irrigation restrictions
  • Reduced personal protective equipment (PPE) requirements = ease of application and handling

NOTE: Applications of Clipper may require special approval and/or permits. Consult with local state agencies if required

Active Ingredient: Flumioxazin

Clipper is a Group 14 Herbicide (HRAC)

GROUP

14

HERBICIDE

  • Class of chemistry: Protoporphyrinogen oxidase (PPO) inhibitor
  • Mode of action: Initiates cell membrane disruption

Clipper dissipates quickly from the water column and does not accumulate in sediment. Irrigation of turf and ornamentals can resume 24 hours after treatment when applied at 1 lb of Clipper per acre foot of water.

Aquatic Vegetation Controlled

Clipper effectively manages undesirable floating and submerged aquatic vegetation.

Clipper controls:

  • watermeal
  • duckweed
  • cabomba/fanwort
  • Eurasian watermilfoil
  • hydrilla
  • alligatorweed
  • frogs-bit
  • water fern
  • water lettuce
  • water pennywort
  • filamentous algae
  • pondweed
  • coontail
  • curlyleaf pondweed
  • variable-leaf watermoilfoil

 

Watermeal

Duckweed

Cabomba/Fanwort

Eurasian Watermilfoil

Hydrilla

Product Performance

Clipper covers both golf lakes & ponds and traditional aquatic waterways.

The following photos show the effect of Clipper on watermeal 14 days after treatment. Clipper was applied at 200 ppb.

 

The following photos show the effects of Clipper on curlyleaf pondweed (submerged) and filamentous algae (floating) in a pond in Northwest Connecticut. Clipper was applied at 200 pbb.

In these photos, Clipper was applied at 200 ppb as a submersed treatment for cabomba in this shallow canal.

How Clipper Works

Clipper provides fast and selective control of undesirable, invasive and nuisance aquatic vegetation.

  • Clipper is activated by sunlight resulting in cell membrane disruption
  • The greater percentage of leaf area covered with Clipper increases control
  • Clipper is not translocated
  • Key aspects for obtaining optimal performance with Clipper:
    • Plant size – apply when plants are small and actively growing
    • Plant density – apply before plants are dense and the foliage is packed together
    • Product coverage – obtain the best coverage possible
    • Ideal conditions include an application in the morning of a bright sunny day

Application Information

Always read and follow label instructions

  • Rate: 1 lb of product per acre foot = 200 ppb
  • Timing: Clipper is a contact herbicide that quickly degrades in water and should contact undesirable vegetation within 2 hours following an application
  • Additive: Add a surfactant when targeting floating aquatic plants
  • Equipment:
    • Apply Clipper with sprayers equipped with a nozzle designed to deliver the desired spray pressure and spray volume
    • Apply by backpack or handgun sprayer, airboat, helicopter, airplane or other application equipment that will ensure thorough coverage of target plant foliage
  • When applied according to label instructions, there are no restrictions for swimming, drinking or fishing

Use Restrictions and Precautions

  • Do not apply to intertidal or estuarine areas
  • There is no post-application holding restriction against use of treated water for drinking or for recreational purposes such as swimming or fishing
  • In areas with dense vegetation, treat only half the water body at one time and wait 10 to 14 days before treating the remaining area; do not re-treat the same section of water within 28 days of application
  • Do not re-treat the same section of water with Clipper more than 6 times per year
  • Do not exceed 400 ppb of Clipper during any one application

Irrigation Restrictions

Clipper dissipates quickly from the water column, so it has minimal irrigation restrictions.

Clipper Application

Application Rate

Water Depth

Turf and Landscape Ornamentals

Greenhouse, Nursery and Production Ornamentals

Application to control floating and submerged plants

200 ppb = 1 pound of Clipper per acre foot deep of water

When calculating use rate, use an average water depth

Wait 1 day following application to use water for irrigation

Wait 5 days following application to use water for irrigation

Always read and follow label instructions.

Tank Mixes

Clipper may be tank mixed with 2,4-D, diquat, glyphosate or other registered aquatic herbicides for enhanced control of floating and submerged plants.

Consult manufacturers’ labels for specific restrictions, use instructions and plants controlled. Always follow the most restrictive label restrictions and precautions for all products used when making an application involving tank mixes.

The Case for Clipper

Clipper controls key plants in both golf and traditional aquatics. It’s tough. It’s fast. And, it’s gone.

 

Clipper News! (well, news back then.)

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Clipper™ Aquatic Herbicide Registered for Immediate Application for Use on Invasive Weeds

Provides Aquatic Managers with Much-Needed New Tool for Selective Plant Management

January 4, 2014 (original posting 1+ years ago)

Clipper™ aquatic herbicide and algaecide has recently been registered by the Environmental Protection Agency (EPA) for use to combat a variety of aquatic plant infestations. Clipper™ equips pond and lake service outfits with rapid, highly effective knockdown product for use on nuisance selective weeds and plants. With a fast, effective and much-needed new tool for selective aquatic plant control and resistance management.

Unlike some systemic products (fluridone) which can take months to remediate infestation, Clipper™  is  and is the only PPO inhibitor with proven activity on both floating and submersed plants. Clipper™ provides valuable flexibility for applicators and selectively controls a range of invasive and nuisance weeds and algae. Clipper™ controls:

  1. hydrilla
  2. Eurasian watermilfoil
  3. curlyleaf pondweed
  4. cabomba
  5. duckweed
  6. watermeal and more!

This exciting new technology affords pond and lake owners the ability to take back their pond without risking random shot-in-the dark type application. Clipper plays an important role in herbicide resistance management programs. And, Clipper works rapidly followed by a fast dissipates in the water column. It does not accumulate in sediment.

Clipper™ offers reduced personal protective equipment (PPE) requirements compared to many other products, a convenient package size and a non-corrosive, dry, flowable formulation for easy mixing, transport and application.

“We have helped tens of thousands of pond owners eradicate nuisance weeds with many of those treatments including fluridone based products. Fluridone is systemic and must remain in the water column for quite a while to be effective, and can take time to show desired results.” said Don Tephart, NTB Aquatics, Inc.,  “With Clipper™, the results are night and day and flow isn’t really a major issue, especially compared to the former. It does the job right and is easy to apply. We like what Valent has done here and we plan on using it as part of our complete arsenal against invasive weeds/algae”

 

Clipper Key Points

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99%
Percentage of States where Clipper is used?
- Key use/pests

Clipper Aquatic Herbicide

        Product Used On            

  • bayous
  • canals
  • drainage ditches
  • lakes
  • marshes
  • ponds
  • reservoirs

 

Pests

  • alligator weed
  • frogs-bit
  • water fern
  • water lettuce
  • water pennywort
  • filamentous algae
  • coontail
  • duckweed
  • fanwort
  • cabomba
  • hydrilla
  • pondweed
  • curlyleaf pondweed
  • sago pondweed
  • watermeal
  • Eurasian watermilfoil
  • variable-leaf watermilfoil

 

State Registrations*

  • Alabama
  • Arizona
  • Arkansas
  • Colorado
  • Connecticut
  • Delaware
  • Florida
  • Georgia
  • Hawaii
  • Idaho
  • Illinois
  • Indiana
  • Iowa
  • Kansas
  • Kentucky
  • Louisiana
  • Maine
  • Maryland
  • Massachusetts
  • Michigan
  • Minnesota
  • Mississippi
  • Missouri
  • Montana
  • Nebraska
  • Nevada
  • New Hampshire
  • New Jersey
  • New Mexico
  • North Carolina
  • North Dakota
  • Ohio
  • Oklahoma
  • Oregon