PLATEAUÒ herbicide
FOR WEED CONTROL, NATIVE GRASS ESTABLISHMENT AND TURF GROWTH SUPPRESSION
ON PASTURES, RANGELAND AND NONCROP AREAS
ACTIVE INGREDIENT:
Ammonium salt of imazapic (+)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-
5-methyl-3-pyridinecarboxylic
acid*....................................................................................................... 23.6%
INERT INGREDIENTS.................................................................................................................... 76.4%
TOTAL.............................................................................................................................................. 100.0%
*Equivalent to 22.2% (+)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-methyl-3-pyridinecarboxylic
acid
(1 gallon contains 2.0
pounds of active ingredient as the free acid)
EPA Reg. No.
241-365 U.S. Patent
No. 4,798,619 EPA Est.
No.
KEEP OUT OF REACH OF CHILDREN
CAUTION!/PRECAUCION!
Si usted no entiende la etiqueta, busque a alguien
para que se la explique a usted en detalle.
(If you do not understand the label, find someone to
explain it to you in detail.)
In case of an emergency endangering life or
property involving this product,
call day or night,800-832-HELP.
See Next Page for Additional Precautionary Statements
Net Contents:
ÒRegistered Trademark of BASF
NVA 2001-04-126-
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FIRST AID
IF INHALED: Move person to fresh air.If person is not breathing, call 911 or an ambulance, then give
artificial respiration, preferably mouth-to-mouth if possible.Call a poison control center or doctor for
further treatment advice.
IF ON SKIN OR
CLOTHING: Take off
contaminated clothing.Rinse skin
immediately with plenty of water for 15-20 minutes.Call a poison control center or doctor for treatment advice.
IF IN EYES: Hold eye open and rinse slowly and gently with water for
15-20 minutes.Remove contact lenses,
if present, after the first 5 minutes, then continue rinsing.Call a poison control center or doctor for
treatment advice.
Have the product container or label
with you when calling a poison control center or doctor or going for treatment.
PRECAUTIONARY
STATEMENTS
HAZARDS TO HUMANS AND DOMESTIC ANIMALS
CAUTION!
Harmful if inhaled or absorbed through skin.Avoid breathing spray mist. Avoid contact
with skin, eyes or clothing.Wash
thoroughly with soap and water after handling.
Personal
Protective Equipment (PPE):
Some materials that are chemical-resistant to this
product are listed below.If you want
more options, follow the instructions for category A on an EPA
chemical-resistant category selection chart.
Applicators and other handlers must wear:
·
Long-sleeve
shirt and long pants
·
Chemical-resistant
gloves, such as butyl rubber >14 mils, or
natural rubber >14 mils, or neoprene rubber >14 mils, or
nitrile rubber >14 mils.
·
shoes
plus socks
Follow manufacturer’s instructions for cleaning and maintaining PPE.If no such instructions for washables, use detergent and hot water.Keep and wash PPE separately from other laundry.
User Safety Recommendations:
Users Should:
· Wash hands before eating, chewing gum, using tobacco or using the toilet.
· Remove clothing immediately if pesticide gets inside.Then wash thoroughly and put on clean clothing.
ENVIRONMENTAL
HAZARDS
For terrestrial use only.DO NOT apply directly to water, or to areas where surface water
is present, or to intertidal areas below the mean high water mark.
DO NOT contaminate water when disposing of equipment
washwaters or rinsate.
This chemical demonstrates the properties and
characteristics associated with chemicals detected in ground water.The use of this chemical in areas where
soils are permeable, particularly where the water table is shallow, may result
in ground-water contamination.
This product may contaminate water through drift of
spray in wind.This product has a high
potential for runoff for several months or more after application.Poorly draining soils and soils with shallow
watertables are more prone to produce runoff that contains this product.A level, well maintained vegetative buffer
strip between areas to which this product is applied and surface water features
such as ponds, streams, and springs will reduce the potential for contamination
of water from rainfall-runoff.Runoff
of this product will be reduced by avoiding applications when rainfall is
forecasted to occur within 48 hours.
IMPORTANT
PLATEAU herbicide may be applied to non-irrigation
ditches and low lying areas when water has drained, but may be isolated in
pockets due to uneven or unlevel conditions.DO NOT treat the inside of irrigation ditches.DO NOT rinse equipment on or near desirable trees or ornamental
plants, or on areas where their roots may extend, or in locations where the
chemical may be washed or moved into contact with their roots.DO NOT use on residential lawns.
DIRECTIONS FOR
USE
It is a violation of Federal law to use this product
in a manner inconsistent with its labeling.
Do
not apply this product in a way that will contact workers or other persons,
either directly or through drift.Only
protected handlers may be in the area during application.For any requirements specific to your State
or Tribe, consult the agency responsible for pesticide regulation.
This labeling must be in the possession of the user at the time of pesticide application.
DO NOT use PLATEAU herbicide on food or feed crops
except as recommended by this label or supplemental labeling.
DO NOT cut treated area for hay within seven days
after treatment.
DO NOT use organophosphate insecticides on newly
seeded areas treated with PLATEAU herbicide unless severe injury or loss of
stand can be tolerated.
Observe all cautions and limitations on this label
and on the labels of products used in combination with PLATEAU herbicide.Do not use PLATEAU herbicide other than in
accordance with the instructions set forth on this label.The use of PLATEAU herbicide not consistent
with this label may result in injury to desired vegetation.Keep containers closed to avoid spills and
contamination.
When making new plantings of prairiegrass or wildflowers, carry-over from persistent herbicides such as sulfonyl-urea, imidazolinone, triazine, substituted urea, dinitroanaline, and other herbicides applied the previous year may result in compounded injury or death of desirable vegetation when treated with PLATEAU herbicide.
When making applications around desirable trees or
ornamental plants, small areas should be tested to determine the tolerance of a
particular species to soil and/or foliar applications of PLATEAU
herbicide.See “TOLERANCE OF TREES AND
BRUSH TO PLATEAU HERBICIDE” section of this label.
DO NOT apply this product through any type of
irrigation system.
DO NOT exceed 12 ounces of PLATEAU herbicide per
acre in one year.
AGRICULTURAL USE REQUIREMENTS
Use this product only in accordance
with its labeling and with the Worker Protection Standard, 40 CFR part
170.This Standard contains
requirements for the protection of agricultural workers on farms, forests,
nurseries, and greenhouses, and handlers of agricultural pesticides.It contains requirements for training,
decontamination, notification, and emergency assistance.It also contains specific instructions and
exceptions pertaining to the statements on this label about personal protective
equipment (PPE) and restricted entry interval.The requirements in this box only apply to uses of this product that are
covered by the Worker Protection Standard.
Do not enter or allow worker
entry into treated areas during the restricted entry interval (REI) of 12
hours.
PPE required for early entry
to treated areas that is permitted under the Worker Protection Standard and
that involves contact with anything that has been treated, such as plants,
soil, or water, is:
· coveralls
· chemical-resistant gloves, such as butyl rubber >14
mils, or natural rubber >14 mils, or neoprene rubber >14
mils, or nitrile rubber >14mils.
· shoes
plus socks
|
NON-AGRICULTURAL USE
REQUIREMENTS The requirements in this
box apply to uses of this product that are NOT within the scope of the Worker
Protection Standard (WPS) for agricultural pesticides (40 CFR Part 170).The WPS applies when this product is used
to produce agricultural plants on farms, forests, nurseries, or greenhouses. Noncrop weed control is
not within the scope of the Worker Protection Standard.See the GENERAL INFORMATION section of
this label for a description of noncrop sites. Do not enter treated areas
without protective clothing until sprays have dried. |
STORAGE AND
DISPOSAL
PROHIBITIONS:
KEEP
FROM FREEZING
DO NOT store
below 20oF.
DO NOT
contaminate water, food or feed by storage or disposal.
PESTICIDE
DISPOSAL:Wastes resulting from the use of this
product may be disposed of on site or at an approved waste disposal facility.
CONTAINER
DISPOSAL: Triple rinse (or equivalent).Then offer for recycling or reconditioning,
or puncture and dispose of in a sanitary landfill, by incineration or, if
allowed by State and local authorities by burning.If burned, stay out of smoke.
DISCLAIMER
The label instructions for the use of this product
reflect the opinion of experts based on research and field use.The directions are believed to be reliable
and should be followed carefully.However,
it is impossible to eliminate all risks inherently associated with use of this
product.Turf injury, ineffectiveness
or other unintended consequences may result because of such factors as weather
conditions, presence of other materials, or the use of, or application of the
product contrary to label instructions, all of which are beyond the control of
BASF Corporation (BASF).All such risks
shall be assumed by the user.
BASF shall not be responsible for losses or damages
resulting from use of this product in any manner not set forth on this
label.User assumes all risks associated
with the use of this product in any manner not specifically set forth on this
label.
BASF warrants only that the material contained
herein conforms to the chemical description on the label and is reasonably fit
for the use therein described when used in accordance with the directions for
use, subject to the risks referred to above.BASF DOES NOT MAKE OR AUTHORIZE ANY AGENT OR REPRESENTATIVE TO MAKE ANY
OTHER WARRANTIES, EXPRESS OR IMPLIED AND EXPRESSLY EXCLUDES AND DISCLAIMS ALL
IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
BUYER'S EXCLUSIVE REMEDY AND BASF’S EXCLUSIVE
LIABILITY, WHETHER IN CONTRACT, TORT, NEGLIGENCE, STRICT LIABILITY OR
OTHERWISE, SHALL BE LIMITED TO REPAYMENT OF THE PURCHASE PRICE OF PLATEAU
herbicide.In no case shall BASF or the
seller be liable for consequential, special or indirect damages resulting from
the use or handling of this product.
BASF makes no other express or implied warranty,
including other express or implied warranty of FITNESS or of
MERCHANTABILITY.User assumes the risk
of any use contrary to label instructions, or under abnormal conditions, or
under conditions not reasonably foreseeable by BASF.
USES WITH
OTHER PRODUCTS (TANK-MIXES)
If this product is used in combination with any
other product except as specifically recommended in writing by BASF Corporation
then BASF Corporation shall have no liability for any loss, damage, or injury
arising out of its use in any such combination not so specifically recommended.If used in combination recommended by BASF
Corporation, the liability of BASF Corporation shall in no manner extend to any
damage, loss or injury not directly caused by the inclusion of the BASF
Corporation product in such combination use, and in any event shall be limited
to return of the amount of the purchase price of the BASF Corporation product.
GENERAL
INFORMATION
PLATEAU herbicide is an aqueous solution to be mixed
with water and an adjuvant and applied as a spray solution to provide weed
control and/or turf height suppression on pastures, rangeland (see “GUIDELINES
FOR RANGELAND USE” section), Federal Conservation Reserve Program (CRP) land
and noncropland areas including noncropland areas that may be grazed or cut for
hay.Examples of noncropland areas
include, but are not limited torailroad, utility, pipeline and highway rights-of-way, railroad
crossings, utility plant sites, petroleum tank farms, pumping installations,
non-agricultural fence rows, storage areas, non-irrigation ditchbanks, prairie
sites, airports, industrial turf, golf courses, recreational and
non-residential turf and other similar areas.PLATEAU herbicide may be used for the release of bermudagrass,
bahiagrass, smooth bromegrass, wheatgrass, “wildtype” common Kentucky
bluegrass, native prairiegrass, wildflowers, crown vetch, other grasses and
certain legumes.PLATEAU herbicide can
also be used for weed control during the establishment of native prairiegrasses
and other grasses (see “REVEGETATION WITH PRAIRIEGRASSES AND OTHER FORAGE GRASSES”
section).
PLATEAU herbicide is readily absorbed through leaves, stems, and roots and is translocated rapidly throughout the plant, with accumulation in the meristematic regions.Treated plants stop growing soon after spray application.Chlorosis appears first in the newest leaves, and necrosis spreads from this point. In perennials, the herbicide is translocated into, and kills, underground storage organs which prevents regrowth.Chlorosis and tissue necrosis may not be apparent in some plant species for several weeks after application.Complete kill of plants may not occur for several weeks after application.Adequate soil moisture is important for optimum PLATEAU herbicide activity.When adequate soil moisture is present, PLATEAU herbicide will provide residual control of susceptible germinating weeds.Activity on established weeds will depend on the weed species and rooting depth.PLATEAU herbicide is rainfast one hour after application.
PLATEAU herbicide will control annual and perennial
grasses and broadleaf weeds and vine species.PLATEAU herbicide will provide residual control of labeled weeds which
germinate in the treated area.Certain
brush species and ornamentals may be injured by direct application of PLATEAU
herbicide to their foliage.This
product may be applied either preemergence or postemergence to the weeds.However, post emergence application is the
method of choice in most situations, particularly for perennial species.For maximum activity, weeds should be
growing vigorously at the time of postemergence applications and the spray
solution should include an adjuvant (see "SPRAY ADJUVANTS FOR
POSTEMERGENCE APPLICATIONS” section ).These solutions may be applied as a broadcast or as a spot treatment
using backpack, or ground equipment.
PLATEAU herbicide may be applied in the dormant or
growing season for weed control.
Tolerance of desirable grass species to PLATEAU
herbicide may be reduced when grasses are stressed due to insect damage,
disease, environmental conditions, shade, poorly drained soils or other causes.
Depending on the turf type being treated, some
yellowing of turf may occur with applications during the growing season.Depending on weather conditions, yellowing
will usually disappear in 2 to 4 weeks.
PLATEAU herbicide should not be applied to newly
seeded or sprigged grass stands, unless otherwise stated in this label (see
“REVEGETATION WITH PRAIRIEGRASSES AND OTHER FORAGE GRASSES” section).
MIXING
INSTRUCTIONS
Fill the spray tank one-half to three-quarters full
with clean water.Use a calibrated
measuring device to measure the required amount of PLATEAU herbicide.Add PLATEAU herbicide to the spray tank
while agitating.Fill the remainder of
the tank with water.
For postemergence applications, add a surfactant to
the spray tank (see “SPRAY ADJUVANTS FOR POSTEMERGENCE APPLICATIONS” section of
this label for specific recommendations).Maintain agitation while spraying to ensure a uniform spray mixture.An antifoaming agent may be added to the
tank if needed.
When tank-mixing PLATEAU herbicide with recommended
herbicides, add wettable powders, dispersible granules or other dry
formulations first, then EC’s, then PLATEAU herbicide, and then an adjuvant.
SPRAYING INSTRUCTIONS
DO NOT apply during windy or gusty conditions unless
applications are being made with a drift control agent and/or an enclosed or
shielded spray system.DO NOT apply if
rainfall is threatening.Rainfall
within 1 hour after PLATEAU herbicide application may reduce weed control.
GROUND APPLICATIONS:
Uniformly apply with properly calibrated ground
equipment in 2 or more gallons of water per acre. Application equipment,
specially designed to make low volume application should be used when making
applications using less than 10 gallons of water per acre.A spray pressure of 20 to 40 psi is
recommended.
To achieve acceptable control of the target
vegetation, good spray coverage of the weed foliage (postemergence) or soil
surface (preemergence) is required.To
achieve good spray coverage the sprayer must be calibrated to deliver the
recommended spray volume and pressure and adjust the spray boom height to
ensure proper coverage of weed foliage or soil surface (according to the
manufacturer's recommendation).Avoid
overlaps when spraying.
SPOT TREATMENTS:
To prepare the spray solution, thoroughly mix in
water 0.25 to 1.5% (0.3 to 1.9 oz/gallon water) PLATEAU herbicide plus an
adjuvant (see “SPRAY ADJUVANTS FOR POSTEMERGENCE APPLICATIONS” section).A methylated seed oil at 1% v/v is the
recommended spray adjuvant except when treating seedling prairiegrasses and
wildflowers.See section on desired
species and do not exceed the recommended PLATEAU rate per acre.Also see “WEEDS CONTROLLED” and “SPECIAL
WEED CONTROL” sections for specific rate and/or tank-mix recommendations.
AERIAL APPLICATION:
All precautions should be taken to minimize or eliminate spray drift.Fixed wing aircraft and helicopters can be used to apply PLATEAU herbicide, however, when making applications by fixed wing aircraft maintain appropriate buffer zonesto prevent spray drift out of the target area.Aerial equipment designed to minimize spray drift such as a helicopter equipped with a MICROFOILÔ boom, or THRU-VALVEÔ boom or raindrop nozzles, must be used and calibrated.Except when applying with a MICROFOIL boom, a drift control agent may be added at the recommended label rate.To avoid drift, applications should not be made during inversion conditions, when winds are gusty, or under any other conditions that promote spray drift.
Uniformly apply recommended amount of PLATEAU
herbicide, using enough water volume to provide adequate coverage of target
area or foliage.Include an adjuvant in
the spray solution (see "SPRAYADJUVANTS FOR POSTEMERGENCE APPLICATIONS" section). A foam reducing
agent may be added at the recommended rate, if needed.Aerial application to target species growing
under the canopy of trees and brush may not receive sufficient spray coverage for
effective control.For weed species
with a recommended fall application timing (see “SPECIAL WEED CONTROL”
section), delaying the aerial application until trees and brush have dropped
their leaves can improve weed control and reduce the potential for tree and
brush injury (see “TOLERANCE OF TREES AND BRUSH TO PLATEAU HERBICIDE” section).
IMPORTANT:Thoroughly clean application equipment, including landing gear,
immediately after use of this product.Prolonged exposure of this product to uncoated steel (except stainless
steel) surfaces may result in corrosion and failure of the exposed part.The maintenance of an organic coating
(paint) may prevent corrosion.
Avoid overlaps when spraying.
SPRAY ADJUVANTS FOR POSTEMERGENCE APPLICATIONS
Postemergence applications of PLATEAU herbicide
require a spray adjuvant.See
"SPECIAL WEED CONTROL" section.Due to variations in surfactant contents, certain surfactants containing
high amounts of alcohols, paraffin based petroleum oils, and other compounds
which can increase phytotoxicity to desirable vegetation, it is recommended to
choose a low phytotoxic surfactant.
Methylated
Seed Oils or Vegetable Oil Concentrates:Instead of
a surfactant, a methylated vegetable-based seed oil concentrate containing 5 to
20% surfactant and the remainder of the methylated vegetable oil may be used at
the rate of 1.5 to 2 pints per acre.Methylated seed oils provide their greatest effects at 30 GPA or
less.At spray volumes above 50 GPA,
their advantage appears negated.When
using spray volumes greater than 30 gallons per acre methylated seed oil or
vegetable based seed oil concentrates should be mixed at a rate of 1% of the
total spray volume or alternatively use a nonionic surfactant as described
below.Research indicates these oils may aid in deposition
and uptake of PLATEAU herbicide for hard-to-control perennials, waxy leaf
species or when plants are under moisture or temperature stress.DO
NOT use a methylated seed oil or vegetable oil concentrate when making
applications to newly emerged seedling prairiegrasses or wildflowers as injury
may occur.
Nonionic
Surfactants:Use a nonionic surfactant at the rate of
0.25% v/v or higher (see manufacturer's label) of the spray solution (0.25% v/v
is equivalent to 1 quart in 100 gallons).For best results, select a nonionic surfactant with a HLB (hydrophilic
to lipophilic balance) ratio between 12 and 17 and having at least 60%
surfactant in the formulated product (alcohols, fatty acids, oils, ethylene
glycol or diethylene glycol should not be considered as surfactants to meet the
above requirements).
Silicone-Based
Surfactants:See manufacturer's label for specific rate
recommendations.Silicone-based
surfactants may reduce the surface tension of the spray droplet allowing
greater spreading on the leaf surface as compared to conventional nonionic
surfactants.However, some
silicone-based surfactants may dry too quickly, limiting herbicide uptake and
higher spray volumes may exhibit “run-off”.
Fertilizer/Surfactant Blends:Nitrogen-based liquid fertilizers such as 28%N, 32%N, 10-34-0, or
ammonium sulfate, may be added at the rate of 2 to 3 pints per acre in
combination with the recommended rate of nonionic surfactant or methylated seed
oil.Research indicates that nitrogen
based fertilizers aid in the burndown of annual weeds and increase PLATEAU
herbicide uptake through waxy leaf species.However, fertilizers may increase phytotoxicity to desired species and
newly emerged seedling prairiegrasses and wildflowers.The use of liquid fertilizers at a rate of 2
to 3 pints per acre in a tank-mix without a nonionic surfactant or a methylated
seed oil is not recommended and may result in herbicide failure.Only when liquid fertilizer is used as the
spray carrier is no additional spray adjuvant required.
TANK MIXES
For use in noncrop areas, PLATEAU herbicide may be
tank-mixed with PENDULUMÒ herbicide for additional
control of late season annual grasses and certain broadleaves.For additional weed control in noncrop
areas, PLATEAU herbicide may be tank-mixed with ACCORDÔ, ROUNDUPÔ PRO, glyphosate, ARSENALÒ herbicide, SAHARAÒ DG herbicide, diuron,
CAMPAIGNÔ, FINALEÔ, GARLONÔ 3A, MSMA, VANQUISHÔ, OUSTÔ, ESCORTÔ, TORDONÔ, or other labeled
products.A compatibility test is
advised for products not listed.2,4-D
and other phenoxy type herbicides have resulted in reduced control of perennial
grass weeds.
For tank mix recommendations for use in bermudagrass
pastures, refer to the “DIRECTIONS FOR USE IN BERMUDAGRASS PASTURES AND HAY
MEADOWS” section.
DO NOT tank mix with organophosphate insecticides or
use the same year as PLATEAU herbicide when making applications to newly
planted areas.
Consult manufacturer's labels for specific rates and
weeds controlled.Always follow the
more restrictive label when making an application involving tank-mixes.
For the control of undesirable weeds in pasture and rangeland (see “GUIDELINES FOR RANGELAND USE” section), apply PLATEAU herbicide at 2 to 12 oz. per acre as a broadcast treatment or as a ½ to 1% solution for spot treatments.See appropriate sections of this label for specific use directions.
GUIDELINES FOR RANGELAND USE
PLATEAU herbicide may be applied to rangeland for the control of undesirable vegetation in order to achieve one or more of the following vegetation management objectives:
To ensure the protection of threatened and
endangered plants when applying PLATEAU herbicide to rangeland:
Please see the appropriate
section(s) of this label for specific use directions for the desired rangeland
vegetation management objective.
PLATEAU herbicide should only be applied to a given rangeland acre as specific weed problems arise.For the control of annual weed species such as cheatgrass, downy brome and medusahead rye, a single application of PLATEAU herbicide that coincides with the successful establishment and/or release of desirable rangeland vegetation and the use of available IPM can provide effective, sustainable control of the annual weed problem.For difficult to control perennial weed species such as leafy spurge, dalmatian toadflax and Russian knapweed, a single broadcast application of PLATEAU herbicide should be effective in most cases.If needed, spot treatments with PLATEAU herbicide can be used to control any remnant plants or new seedlings that may emerge.Long term control of undesirable weed species ultimately depends on the successful use of land management practices that promote the growth and sustainability of desirable rangeland plant species.
DIRECTIONS
FOR USE IN BERMUDAGRASS PASTURES AND HAY MEADOWS
PLATEAU herbicide may be used postemergence at a
rate of 4 to 12 oz per acre for control of undesirable winter and summer annual
and perennial grasses in bermudagrass pastures and hay meadows (see rate and
timing recommendations below).PLATEAU
herbicide may be used on common and coastal varieties of bermudagrass
including, but not restricted to Tifton 44, 78 and 85, Alicia and Russell.Suppression of bermudagrass growth for 30 to
45 days or longer may occur, depending upon growth conditions after
application.Jiggs bermudagrass in
particular has shown greater sensitivity to PLATEAU herbicide.Do not use PLATEAU herbicide if this growth
response is not acceptable.
In bermudagrass pastures and hay
meadows, even and thorough spray coverage is necessary to achieve the desired
level of weed control.To ensure proper
spray coverage, the sprayer must be calibrated to deliver the recommended spray
volume and pressure and the spray boom height adjusted to ensure proper
coverage of weed foliage (according to the manufacturer's recommendation).The use of boomless or flood type nozzles is
not recommended and may result in decreased weed control.
DO NOT apply PLATEAU to drought
stressed bermudagrass.
DO NOT use PLATEAU for the
establishment of sprigged or seeded bermudagrass.
DO NOT use PLATEAU on World
Feeder varieties of bermudagrass.
DO NOT apply PLATEAU during
transition from dormancy to full green-up.
AVOID applications of PLATEAU to
newly aerated fields for 30 days after aeration.
Spring Applications and Bermudagrass Tolerance:Spring application of PLATEAU herbicide
should only be made after bermudagrass has reached 100% green-up.PLATEAU applications to bermudagrass during
transition from winter dormancy to 100% green-up will significantly delay
green-up and growth of bermudagrass, resulting in the potential loss of one or
more cuttings.Bermudagrass can be
considered to have reached 100% green-up only when all stolons (runners) have
developed new active growth.Partial
green-up may be characterized by the green appearance of new bermudagrass
growth in the field, but upon close inspection some of the stolons may not have
begun to grow.PLATEAU applications
made at this time can still cause significant reductions in bermudagrass growth
and development and should be delayed until 100% green-up.To minimize bermudagrass response from
spring applications, all applications should be made postemergence to the targeted
summer annual or perennial weeds.See
specific use directions below for appropriate postemergence timing for targeted
weed species.
Postemergent Control of Summer Annual and Perennial
Grass Weeds:Apply PLATEAU
herbicide after bermudagrass has reached full green-up and target grass weeds
are at the desired growth stage (see recommended rates and growth stages
below).Early Spring applications made
during transition from dormancy to green-up will delay bermudagrass green-up
and subsequent bermudagrass growth.Recommended PLATEAU herbicide applications may cause some stolon
internode shortening and yellowing of the bermudagrass.The use of a nitrogen fertilizer (32-0-0 or
28-0-0) as the spray carrier will shorten recovery time.
For summer annual grass control apply 4 to 6 oz per
acre of PLATEAU early postemergence (2 to 4 leaf stage) following full
bermudagrass green-up.If target weeds
are at or above boot stage, apply 6 to 8 oz per acre for control.Always add a surfactant when applying
PLATEAU herbicide unless liquid fertilizer is being used as the spray
carrier.PLATEAU will provide some
preemergence annual grass control, however initial applications need to be made
postemergence to target weed species.
For summer perennial grass control apply 6 to 12 oz
per acre of PLATEAU postemergence following bermudagrass green-up. If higher
rates (8 to 12 oz per acre) are needed for control of target species, PLATEAU
herbicide can be applied in the fall before killing frost occurs.When making a fall application, if
bermudagrass has been cut for hay, allow sufficient regrowth of target species
before making application.Always add a
surfactant when applying PLATEAU herbicide unless liquid fertilizer is being
used as the spray carrier.
Postemergent Control of Winter Annual and Perennial
Grass Weeds:Apply PLATEAU
herbicide when bermudagrass is dormant prior to green-up.If bermudagrass has green tissue at the root
crown or stolons, applications of PLATEAU may delay green-up of bermudagrass
and subsequent bermudagrass growth.During mild winters, bermudagrass in the deep South may not be
completely dormant.Applications in
these areas should be avoided if delayed green-up cannot be tolerated.
For winter annual and perennial grass control, apply
6 to 12 oz per acre of PLATEAU postemergent, when bermudagrass is dormant.The addition of 16 to 24 oz per acre of
ROUNDUP ULTRAÔ or glyphosate equivalent
will increase control of larger winter annual and cool season perennial
grasses.Always add a surfactant when
applying PLATEAU herbicide unless liquid fertilizer is being used as the spray
carrier.
Recommended
PLATEAU Herbicide Rates for Postemergent Summer Annual Grass Control
|
Common Name |
Genus Species |
Weed Height |
Rate per Acre (fluid oz) |
|
Large
Crabgrass |
Digitaria sanguinalis |
<4 |
4 |
|
|
|
>4 |
6 |
|
Smooth
Crabgrass |
Digitaria ischaemum |
<4 |
4 |
|
|
|
>4 |
6 |
|
Giant
Foxtail |
Setaria faberi |
|
6 |
|
Green
Foxtail |
Setaria viridis |
<4 |
4 |
|
|
|
>4 |
6 |
|
Yellow
Foxtail |
Setaria glauca |
<4 |
4 |
|
|
|
>4 |
6 |
|
Texas
Panicum |
Panicum texanum |
|
6 |
|
Fall
Panicum |
Panicum dichotomiflorum |
|
6 |
|
Broadleaf
Signalgrass |
Bracharia platyphylla |
|
4 |
|
Annual
Jewgrass |
Microstegium vimineum |
<4 |
4 |
|
|
|
>4 |
6 |
|
Barnyardgrass |
Echinchloa crus-galli |
<4 |
4 |
|
|
|
>4 |
6 |
|
Sandbur |
Cenchrus spp. |
<4 |
4 |
|
|
|
>4 |
6 |
Applications made to summer annual grasses should be
done after bermudagrass green-up.Applications of PLATEAU made during bermudagrass transition will delay
green up and subsequent bermudagrass growth.Avoid applications to bermudagrass during green-up transition if delayed
green-up cannot be tolerated.
|
Common Name |
Genus Species |
Weed Height |
Rate per Acre (fluid oz) |
|
Johnsongrass |
Sorgham halepense |
18-24 |
8 |
|
|
|
>24 |
12 |
|
Vaseygrass |
Paspalum urvillei |
<6 |
6 |
|
|
|
>6 |
8 |
|
Nutsedge |
Cyperus spp. |
<4 |
4 |
|
|
|
>4 |
6 |
|
Bahiagrass |
Paspalum notatum |
|
6 |
|
Dallisgrass* |
Paspalum dilatatum |
|
8-12 |
|
Smutgrass* |
Sporobolus indicus |
|
8-12 |
*Suppression
|
Common Name |
Genus Species |
Weed Height |
Rate per Acre (fluid oz) |
|
Annual
Ryegrass* |
Lolium multiflorum |
<6 |
6 |
|
|
|
>6 |
10 |
|
Tall
Fescue |
Festuca arundinacea |
|
12 |
|
Wild
Oats |
Avena fatua |
<6 |
6 |
|
|
|
>6 |
10 |
|
Little
Barley |
Hordeumpusilium |
<6 |
4 |
|
|
|
>6 |
6 |
*AHAS and ALS resistant annual ryegrass has been
documented across the Southeastern United States.To minimize this problem, tank mix 16 to 24 oz per acre of
ROUNDUP ULTRA or glyphosate equivalent when making applications to annual ryegrass.
Spray
Adjuvants:The addition of 10 to 20
gallons per acre of 32-0-0 or 28-0-0 liquid fertilizer as part of the spray
carrier will promote the recovery of the bermudagrass from any growth reduction
caused by the herbicide application.No
additional spray adjuvant is required if liquid fertilizer is used as the spray
carrier.
See “SPRAY ADJUVANTS FOR POSTEMERGENCE APPLICATIONS”
section for additional spray adjuvant recommendations.
DO NOT use crop oil concentrates (COC) as spray
adjuvant for control of weeds with PLATEAU herbicide.
Tank
Mixtures:For broadleaf weed control
the addition of a broadleaf herbicide such as WEEDMASTERÒ is recommended.PLATEAU may also be tank mixed with GRAZONÔ, REMEDYÔ, REDEEMÔ, ALLYÔ, 2,4-D and ROUNDUP ULTRA or
glyphosate equivalent.Applications
with tank mixes of 2,4-D that exceed 1 pound active ingredient per acre and
applications with tank mixes of triclopyr amine that exceed 1.5 pounds active
ingredient per acre may reduce efficacy on target grass weed species.
USE OF PLATEAU HERBICIDE ON FEDERAL CONSERVATION
RESERVE PROGRAM (CRP) LAND
PLATEAU herbicide may be
used on Federal Conservation Reserve Program (CRP) land at rates up to12 oz. per acre per year (see minimum
plant-back intervals below).See
appropriate section of this label for specific instructions for the intended
use.
ROTATIONAL CROP RESTRICTIONS
The following rotational
crops may be planted after applying PLATEAU herbicide.Planting rotational crops earlier than the
recommended interval may result in crop injury.
|
Plateau Use
Rate (oz/A) |
Minimum
Plant Back Interval (Months After PLATEAU Herbicide Application) |
||||
|
<4 |
12 |
12 |
18 |
26 |
40 |
|
5-8 |
12 |
14 |
22 |
30 |
44 |
|
9-12 |
12 |
18 |
24 |
36 |
48 |
|
Rotational Crops |
Bahiagrass CLEARFIELDÒ corn hybrids Peanuts Rye Wheat |
Snapbeans Southern
peas Soybeans Tobacco |
Barley Cotton1 Grain
sorghum Oats |
Field
corn2 All
crops not otherwise listed or included for use on this label2 |
Canola2 Potatoes2 Red
table beets2 Sugar
beets2 |
1For Arizona, New Mexico, Oklahoma, and Texas only:Depending on the PLATEAU herbicide use rate, cotton may be
planted 18 to 24 months after PLATEAU herbicide application in the states of
Arizona, New Mexico, Oklahoma, and Texas unless drought conditions develop the
year of PLATEAU herbicide application.DO NOT rotate to cotton at 18 to 24 months after PLATEAU herbicide
application if less than 15 inches of rainfall or irrigation is received from
the time of PLATEAU herbicide application through November 1 of the same
year.If drought conditions develop the
year of PLATEAU herbicide application, cotton may be planted 26, 30 and 40
months after PLATEAU herbicide application.
2 After the recommended
rotational interval listed for these selected crops and for all crops not
otherwise listed or included for use on this label, a successful field bioassay
must be completed.The field bioassay
consists of a test strip of the intended rotational crop planted across the
previously treated field and grown to maturity.The test strip should include low areas and knolls, and include
variations in soil such as type and pH.If no crop injury is evident in the test strip, then the intended
rotational crop may be planted the following year.
Use of PLATEAU herbicide in accordance with label
directions is expected to result in normal growth of plant-back crops in most
situations; however, various environmental and agronomic factors make it
impossible to eliminate all risks associated with the use of this product and,
therefore, plant-back crop injury is always possible.If crop injury is a concern then a bioassay with the desired crop
is recommended prior to planting.
FOR FOLIAR AND
SEEDHEAD SUPPRESSION OF BAHIAGRASS, COOL SEASON GRASSES
AND
SUPPRESSION OF SOME ANNUAL WEEDS
Bahiagrass:PLATEAU herbicide may be used at the rate of 2 to 6 oz per acre
to suppress growth and seedhead development of bahiagrass in unimproved
areas.In North and South Carolina it
is recommended to use PLATEAU herbicide at the rate of 2 oz per acre as higher
rates may cause turf thinning.Depending on rate of PLATEAU herbicide used, surfactant and
environmental conditions, temporary turf discoloration may occur.For optimum performance, application should
be made after green-up. Applications may be made before or after mowing.If applied prior to mowing, raise mowing
height to leave adequate existing foliage as new growth will be
suppressed.If applied after mowing,
allow adequate foliage to remain by increasing mower height or allowing time
for foliar regrowth prior to application.DO NOT apply to turf under
stress (drought, cold, insect, disease, etc.) or severe injury may occur.DO
NOT use a methylated seed oil adjuvant.
|
PLATEAU |
PHYTOTOXICITY |
LENGTH OF SUPPRESSION |
|
2 oz |
none to low |
partial to season long |
|
3 to 6 oz |
low to moderate |
season long |
For winter annual weed control, apply 8 oz of
PLATEAU herbicide when bahiagrass is dormant, but when weeds are actively
growing.This can be followed by 3 to 4
oz of PLATEAU herbicide in the spring after bahiagrass green-up for the
suppression of seedheads and foliage.
Cool Season
Grasses:
KY31 Tall
Fescue and “Wildtype Common” Kentucky Bluegrass:Apply PLATEAU herbicide at 2 to 4 oz per acre for foliar and
seedhead suppression of certain cool season grasses such as “KY31” tall fescue
and “wildtype common” Kentucky bluegrass.Add a surfactant to the 2 oz rate of PLATEAU herbicide for optimum
performance.The addition of a
surfactant to 4 oz of PLATEAU herbicide may cause excessive turf injury or
mortality of tall fescue.Application
to turf type tall fescue or Kentucky bluegrass may result in severe injury or
loss of stand.
Wheatgrass:Apply PLATEAU herbicide at 6 to 10 oz. per acre for foliar and
seedhead suppression of crested wheatgrass, and 6 to 12 oz. per acre for foliar
and seedhead suppression of intermediate wheatgrass.Other wheatgrass species may also be suppressed, however, apply
PLATEAU herbicide to a limited area to determine effectiveness.Tank-mixes with 2,4-D or products containing
2,4-D may decrease the effectiveness of PLATEAU herbicide.Tank-mixes with GARLON, TORDONÔ, TRANSLINEÔ and VANQUISH may decrease
the potential of turf injury.DO NOT
apply to turf under stress or severe injury may occur.
FOR THE
CONTROL OF UNDESIRABLE WEEDS IN BERMUDAGRASS
NOT BEING
GROWN FOR FORAGE OR HAY
PLATEAU herbicide may be used on bermudagrass turf
such as roadsides, utility rights-of-way, railroad crossings, airports,
non-irrigation drainage ditches and other noncropland sites.There is a differential tolerance between
bermudagrass types (See below paragraphs).Depending on bermudagrass type, timing of application, and PLATEAU
herbicide rate, some foliar, stolon, and seedhead suppression may occur.IMPORTANT:Apply PLATEAU herbicide after bermudagrass has reached full
green-up.Spring applications made
prior to full green-up may delay green-up.Always add a surfactant when applying PLATEAU herbicide.DO NOT apply to grass under stress from
drought, disease, insects or other causes.Simultaneous mow/spray operations may suppress internode
development.After mowing, allow
adequate foliage regrowth prior to PLATEAU application as some internode
suppression may prevent bermudagrass from quickly recovering from mowing.
Common
Bermudagrass:Common bermudagrass is the most tolerant
bermudagrass to PLATEAU herbicide.Tank-mixes withROUNDUP PRO,
ACCORD or glyphosate will improve the weed control spectrum, but may increase
turf phytotoxicity.Some stolon
internode shortening and seedhead suppression may occur for the first 8 weeks.
Established
Coastal Bermudagrass:PLATEAU herbicide at2 to 12 oz per acre will provide control of
labeled weeds as well as foliar and seed head suppression of established
coastal bermudagrass.Do not use on New
World hybrid bermudagrass.Depending on
environmental conditions and weed pressure, the longevity of suppression and
weed control increases as the PLATEAU herbicide rate increases.Tank-mixes with ROUNDUP PRO, ACCORD, or
glyphosate may result in death or excessive injury of coastal bermudagrass.
Turf Type
Bermudagrass:Turf type bermudagrass varieties show a high
degree of variation in tolerance to PLATEAU herbicide.PLATEAU herbicide at rates of 2 to 6 oz per
acre will provide some annual weed control and foliar & seedhead
suppression.Rates above 6 oz per acre
may result in excessive injury or death of turf type bermudagrass.
See above sections for PLATEAU herbicide rates and timings for
specific bermudagrass types with regard to weed control and turf tolerance.
Winter Annual
Weed Control:Apply PLATEAU herbicide at the rate of 4 to
12 oz. per acre prior to winter weed germination or while winter weeds are
actively growing.Early spring
applications may delay green-up of bermudagrass turf.
Summer Annual
Weeds:For best results, apply PLATEAU herbicide at
the rate of 4 to 12 oz per acre
pre-emergence or early postemergence before weeds have reached 6 inches in
height.Larger weeds may be controlled
depending on susceptibility, growing conditions, tank-mix partner and adjuvant
selection.
Perennial
Weeds:Apply PLATEAU herbicide at the rate of 8 to
12 oz per acre postemergence after weeds have produced adequate foliage for
herbicide uptake.For a particular weed
see " SPECIAL WEED CONTROL" section below.The addition of ACCORD or ROUNDUP PRO herbicide may increase
control.
Bahiagrass
Control:Apply PLATEAU herbicide at the rate of8 to 12 oz per acre postemergence.See “SPECIAL WEED CONTROL” section below for
recommendations.The addition of
ROUNDUP PRO or ACCORD herbicide at 12 to 16 oz per acre may increase control.
FOR THE
CONTROL OF UNDESIRABLE WEEDS IN UNIMPROVED CENTIPEDE GRASS
PLATEAU herbicide may be applied at a rate of 4 to 8
oz per acre to established centipede grass for the control of annual broadleaf
and grass weeds.Apply PLATEAU
herbicide after centipede grass has reached full green-up.Spring applications made prior to full
green-up may delay green-up.Always add
a surfactant when applying PLATEAU herbicide.DO NOT apply to grass under stress from drought, disease, insects or
other causes.Simultaneous mow/spray
operations may suppress internode development.After mowing, allow adequate foliage regrowth prior to PLATEAU
application as some internode suppression may prevent centipede grass from
quickly recovering from mowing.
FOR CONTROL OF
UNDESIRABLE WEEDS IN SMOOTH BROMEGRASS,
WILDTYPE
COMMON KENTUCKY BLUEGRASS AND WHEATGRASSES
PLATEAU herbicide may be used on smooth bromegrass,
“wildtype” common Kentucky bluegrass and wheatgrass. PLATEAU herbicide provides
control of labeled grass and broadleaf weeds (see “Weeds Controlled” and “Special
Weed Control” sections).Treatment of smooth bromegrass and wheatgrass with PLATEAU herbicide may
result in foliar height and seedhead suppression.
Smooth
Bromegrass and “Wildtype” Common Kentucky Bluegrass:Use PLATEAU herbicide at 4 to 8 oz per acre in the spring for
weed control and growth suppression after smooth bromegrass and “wildtype”
common Kentucky bluegrass have reached 100% green-up.Applications prior to 100% green-up may delay green-up.Rates from 8 to 12 oz per acre may be
applied in the spring but may result in excessive growth suppression.For fall applications (see “SPECAL WEED
CONTROL” section), PLATEAU herbicide may be used at 8 to 12 oz per acre for
control of perennial weeds.
Wheatgrass:To control undesirable weeds in wheatgrasses apply PLATEAU
herbicide at 4 to 12 oz. per acre.
FOR CONTROL OF
UNDESIRABLE WEEDS IN CROWN VETCH
PLATEAU herbicide may be applied at the rate of 4 oz
per acre to newly seeded crown vetch beds to aid in the establishment of vetch
and reduce weed competition.
PLATEAU herbicide at 8 to 12 oz per acre may be used
on unimproved established crown vetch in noncropland areas.PLATEAU herbicide provides control of
labeled grass and broadleaf weeds (refer to the " WEEDS CONTROLLED"
and " SPECIAL WEED CONTROL" sections for specific rates).Treatment of crown vetch beds with PLATEAU
herbicide may cause internode shortening and some minor tip chlorosis depending
on timing of application.
PLATEAU herbicide should be applied during winter
dormancy or early spring to reduce potential injury.Applications made after May, may result in increased injury or
defoliation.Addition of surfactants such
as dilimenene based or crop oil concentrates will increase injury.Fall applications during the period of
active crown vetch growth may result in severe injury or loss of stand.
REVEGETATION WITH PRAIRIEGRASSES AND OTHER FORAGE GRASSES
PLATEAU herbicide may be applied at the rate of 2 to 12 oz per acre to newly established or existing stands oflabeled species (see below for details) in such areas as pasture, rangeland (see “GUIDELINES FOR RANGELAND USE” section), Conservation Reserve Program (CRP) land and noncropland sites such as roadsides, industrial sites, prairie restoration sites, drainage ditch banks, and other similar areas.Certain local ecotypes or varieties may be suppressed by PLATEAU herbicide.Many factors such as poor seedling vigor, cool temperatures, poor soil, planting depth, excessive moisture, disease, insects and dry weather after emergence can all result in poor stands.Additional stress of herbicide residue, poor soils and other factors contributing to poor seedling vigor can also increase injury and could result in mortality. BASF can not be held responsible for such unforeseen factors.It is suggested to try PLATEAU herbicide on a small area if tolerance is not known.PLATEAU herbicide controls many annual and perennial grass and broadleaf weeds. Weed competition is reduced allowing grass seedlings to establish.PLATEAU herbicide is also effective for control of noxious weeds in establishedgrass stands and must be applied postemergence as a foliar treatment to perennial weeds.IMPORTANT:ALWAYS ADD AN ADJUVANT when applying PLATEAU herbicide.To maximize weed control always use a methylated seed oil when treating establishedgrass stands.Use a nonionic surfactant when treating newly emerged seedling grasses.The addition of liquid fertilizer will decrease grass tolerance and should not be used when treating newly emerged seedling grasses.
PLATEAU herbicide may be applied at a rate of up to12 oz per acre to Federal Conservation Reserve Program (CRP) land for the establishment or release ofcertain grass species (see “TOLERANT GRASS SPECIES” table).
Establishment:For optimum results in establishing mixedgrass stands with PLATEAU herbicide, make
application at planting beforegrass
seedlings emerge.Newly emerged grasses
can be sensitive to PLATEAU herbicide and/or the adjuvant used.Ifgrasses have begun to emerge, it is best to wait until they have reached
the five leaf stage to make a PLATEAU herbicide application and use a nonionic
or silicone surfactant.Do not use a
methylated seed oil at this time as some grass species tolerance will be
lost.PLATEAU herbicide will control
annual weeds preemergence or early postemergence.See “WEEDS CONTROLLED” section for maximum height of weeds and
see below for more details on best rate and timing for grass and wildflower
species.Postemergence applications may
result in stand thinning due to variability in seedling grass tolerance to the
use of spray adjuvants.Seedling
grasses are generally more tolerant to the use of spray adjuvants after they have
reached the five leaf stage.When planting
into a field which was row cropped the previous year, compounded injury may
occur from herbicide carry-over (see “DIRECTIONS FOR USE” section).
Rates and
Control:Apply PLATEAU herbicide at 2 to 6 oz per
acre to fields cropped the previous year, when annual weeds are the target
and/or if grass/forb mixtures are used.PLATEAU herbicide at 2 to 6 oz per acre will provide control and/or
suppression of many annual grass and broadleaf weeds.Use lower rates when in the northern most U.S., dry climates or
for late season plantings into clean seedbeds.PLATEAU herbicide rates as low as 2 oz. per acre may be used on soils
with a pH > 7, a low CEC and a course texture containing a minimum of clay
and organic matter.Use higher rates in
heavy weed pressure, heavy residue, high organic matter, high rainfall and long
growing season (southern portions of Illinois, Indiana, Missouri and Ohio,
etc.).Apply PLATEAU herbicide at 8 to
12 oz per acre for giant ragweed or for perennial weed
control/suppression.PLATEAU herbicide
rates of 8 to 12 oz per acre may result in stunting or stand thinning.The duration and intensity of suppression
are directly related to weed pressure, chemical residue, soil type and
environmental conditions.See below for
details for particular grass tolerances and timings.
Established
Stands:For optimum results, apply PLATEAU herbicide
as an early postemergence application to annual grasses and broadleaf
weeds.For perennial weed control, see
"SPECIAL WEED CONTROL" section.The use of high rates may result in foliar and/or seed head height
suppression of established grass stands.This effect is more likely to occur under conditions of light soils, low
weed pressure, low rainfall, and short growing seasons.Use the lower rates for light weed
infestations or when applying to grass stands containing desirable wildflowers
and legumes (see “WILDFLOWER ESTABLISHMENT AND MAINTENANCE” section for rate
tolerance).Use higher rates to broaden
and lengthen weed control spectrum.
Big Bluestem,
Little Bluestem and Indiangrass:PLATEAU
herbicide may be applied at the rate of 2 to 12 oz per acre at planting, or any
time thereafter, including after seedling grasses have emerged or to perennial
stands (dormant or actively growing).See “WEEDS CONTROLLED” section for desired rate.Use the lower rates in Wisconsin, Michigan,
Minnesota, South Dakota, North Dakota, Kansas, Oklahoma, Texas and Nebraska and
higher rates as rainfall and/or growing season increases.
Switchgrass (Panicum virgatum):PLATEAU herbicide is not recommended for the establishment of
pure switchgrass stands as severe injury or death may result.PLATEAU herbicide may be applied at a rate
of 2 to 4 oz per acre if switchgrass is planted in mixed stands with tolerant
species, but only if some stand thinning or loss of stand can be
tolerated.Mature switchgrass planting
can be reclaimed from certain perennial weeds such as tall fescue, leafy
spurge, johnsongrass, etc., with PLATEAU herbicide at rates of 10 to 12 oz per
acre.However, severe stunting and
injury is imminent.DO NOT apply
PLATEAU herbicide to switchgrass if such severe injury can not be tolerated.
Sideoats and
Blue Grama:Apply PLATEAU herbicide to
monoculture stands of sideoats and blue grama only if some stand thinning or
loss of stand can be tolerated.PLATEAU
herbicide may be applied at the rate of 2 to 4 oz/A plus an adjuvant to aid in
the establishment of sideoats and blue grama after new seedlings have emerged
and reached the five (5) leaf stage.When using PLATEAU herbicide at 4 oz per acre it is not recommended to
use in combination with a methylated seed oil adjuvant as stand thinning may
occur.The lower rates may provide
adequate weed suppression in early summer plantings in the states of Wisconsin,
Michigan, Minnesota, South Dakota, North Dakota, Kansas, Oklahoma, Texas and
Nebraska and other states where growing degree days are short.Sideoats and blue grama have shown tolerance
to PLATEAU herbicide at 2 to 4 oz/A, applied pre-emergence at planting, however,
some stand thinning may occur.For weed
control in established stands use 4 to 10 oz/A of PLATEAU herbicide.Up to 12 oz/A of PLATEAU herbicide may be
applied, but may result in foliar and/or seedhead suppression, or in the injury
of sideoats and blue grama, depending on surfactant choice, soil type, variety,
weed pressure and environmental conditions.
Buffalograss:Apply PLATEAU herbicide at the rate of 2 to 4 oz/A for control or
suppression of labeled weeds and to aid in the establishment of newly sprigged
buffalograss.Apply PLATEAU herbicide
immediately after planting prior to spring growth or seed germination.New growth and small seedlings can be
severely injured or killed.If applying
after emergence it is best to wait until buffalograss has at least five true
leaves and use a nonionic or silicone surfactant.Do not use a methylated seed oil.For established stands, PLATEAU herbicide may be applied at the rate
of2 to 8 oz/A for weed control.Higher rates may cause some turf discoloration
and stunting.PLATEAU herbicide may be
applied to dormant buffalograss to control winter annual weeds.Turf type buffalograss may express different
tolerance level to PLATEAU herbicide than wild type buffalograss.Some turf types can tolerate low rates of
PLATEAU herbicide at seeding.Consult
seed dealer for details.
Eastern
Gamagrass:PLATEAU herbicide should only be used for
the establishment or maintenance of eastern gamagrass if some stand thinning or
loss can be tolerated.Apply PLATEAU herbicide
at 2 to 6 oz per acre at planting prior to gamagrass emergence.Stand thinning and stunting is
imminent.Adverse conditions, poor
soils, or added stress to the gamagrass could result in stand mortality.Postemergence application to seedlings will
cause mortality.On established eastern
gamagrass, apply PLATEAU herbicide at 2 to 8 oz per acre prior to gamagrass
breaking dormancy.Some stunting will
occur and increases as the PLATEAU herbicide rate increases.Applications made during or after green-up
may result in foliar and seedhead suppression and possible mortality of weak
plants.
Tall Fescue
Control:Tall fescue can be controlled by using
PLATEAU herbicide at the rate of 12 oz per acre plus methylated seed oil at 2
pints per acre in established stands of or to prepare a seed bed for big
bluestem, little bluestem, and indiangrass.The addition of Nitrogen fertilizer (see "SPRAY ADJUVANTS FOR
POSTEMERGENCE APPLICATIONS " section) to the above mix will aid in
control.Tall fescue must be actively
growing for optimum control.If tall
fescue has reached the boot stage or has reached summer dormancy, control may
be poor.For improved control of tall
fescue, PLATEAU herbicide may be tank mixed with ACCORD, ROUNDUP PRO, or
glyphosate.Fall applications of
PLATEAU herbicide at 8 to12 oz/A plus 24 to 64 oz/A ACCORD or ROUNDUP PRO will
result in best control of existing tall fescue and new germinating
seedlings.With spring applications of
PLATEAU herbicide at 6 to 12 oz/A, plus a ACCORD or ROUNDUP PRO at 32 to 64
oz/A, use higher rates for older, mature fescue stands and lower PLATEAU
herbicide rates when planting forbs.When using 8 oz/A of PLATEAU herbicide in the fall with a glyphosate
product, it is recommended to apply 4 oz/A PLATEAU herbicide in the spring at
planting for annual weed and seedling fescue control.Burning the fescue stand, where permitted, the following spring,
just prior to green-up, will aid in control and provide a better seedbed for
planting.Mowing the fescue several times
the summer before fall application will weaken the fescue root system, making
it more susceptible to herbicides.Always allow for at least 10 inches of regrowth, following the last
mowing before spraying, as both PLATEAU herbicide and glyphosate products need
foliage present for herbicide uptake and satisfactory control.
TOLERANT GRASS
SPECIES1
|
Prairiegrass |
PLATEAU herbicide Rate (oz/A)2 |
||
|
Common Name |
Genus species |
New Seeding |
Established |
|
Big Bluestem |
Andropogon gerardii |
2-12 |
2-12 |
|
Little Bluestem |
Schizachyrium scoparium |
2-12 |
2-12 |
|
Indiangrass |
Sorghastrum nutans |
2-12 |
2-12 |
|
Bushy Bluestem |
Andropogon glomeratus |
---* |
2-12 |
|
King Ranch Bluestem |
Bothriochloa ischaemum |
--- |
2-12 |
|
Silver Beard Bluestem |
Bothriochloa saccharoides |
--- |
2-12 |
|
Broomsedge |
Andropogon virginicus |
--- |
2-12 |
|
Fingergrass, Rhodes grass |
Choris spp. |
--- |
2-12 |
|
Needlegrass |
Stipa spp. |
--- |
2-12 |
|
Needleandthread |
Stipa comata |
--- |
2-12 |
|
Kearny (Plains) Threeawn |
Aristida longespica |
--- |
2-12 |
|
Prairie Threeawn |
Aristida oligantha |
--- |
2-12 |
|
Prairie Sandreed |
Calamovilfa longifolia |
--- |
2-12 |
|
Smooth Bromegrass |
Bromus inermis |
--- |
2-12 |
Kentucky Bluegrass
|
Poa pratensis |
--- |
2-12 |
|
Sandberg’s Bluegrass |
Poa sandbergii |
--- |
2-12 |
|
Wheatgrasses |
Agropyron spp. |
--- |
2-12 |
|
Bottlebrush Squirreltail |
Sitanian hystrix |
--- |
2-12 |
|
Russian Wildrye |
Elymus junceus |
2-62 |
2-12 |
|
Sideoats Grama |
Bouteloua curtipendula |
2-83 |
2-8 |
|
Blue Grama |
Bouteloua gracilis |
2-83 |
2-8 |
|
Buffalograss |
Buchloe dactyloides |
2-4 |
2-8 |
|
Eastern Gamagrass |
Tripsacum dactyloides |
2-63 |
2-8 |
1 See individual grass sections
for application timing.
2 High rates may result in
stunting and growth suppression.
3 PLATEAU
herbicide preemergence applications to newly seeded sideoats, blue grama and
Eastern gamagrass may result in thinning or loss of stand.
* Tolerance unknown
TOLERANCE OF ESTABLISHED GRASSES TO 8 TO 12
OZ/A OF PLATEAU HERBICIDE APPLIED IN THE FALL
|
Grass
Species1 |
Tolerant |
Suppressed2 |
Not Tolerant |
Tolerance Unknown |
|
|
Bermudagrass |
X |
|
|
|
|
|
Bluegrass, Kentucky |
|
X |
|
|
|
|
Bluegrass, Sandberg’s |
X |
|
|
|
|
|
Bluestem, big |
X |
|
|
|
|
|
Bluestem, bushy |
X |
|
|
|
|
|
Bluestem, King Ranch |
X |
|
|
|
|
|
Bluestem, little |
X |
|
|
|
|
|
Bluestem, silver beard |
X |
|
|
|
|
|
Bromegrass, meadow |
|
X |
X |
|
|
|
Bromegrass, smooth |
|
X |
|
|
|
|
Broomsedge |
X |
|
|
|
|
|
Buffalograss |
X |
X |
|
|
|
|
Cheatgrass |
|
|
X |
|
|
|
Creeping foxtail, Garrison |
|
|
|
X |
|
|
Downey brome |
|
|
X |
|
|
|
Fescue, Idaho |
X |
|
|
|
|
|
Fescue, tall |
|
|
X |
|
|
|
Gamagrass, eastern |
|
X |
|
|
|
|
Grama, blue |
X |
X |
|
|
|
|
Grama, sideoats |
X |
X |
|
|
|
|
Indiangrass |
X |
|
|
|
|
|
Medusahead |
|
|
X |
|
|
|
Needleandthread |
X |
|
|
|
|
|
Needlegrass, green |
X |
|
|
|
|
|
Orchardgrass |
|
X |
|
|
|
|
Prairie cordgrass |
|
X |
|
|
|
|
Prairie dropseed |
|
|
|
X |
|
|
Praire sandreed |
X |
|
|
|
|
|
Praire threeawn |
X |
|
|
|
|
|
Quackgrass |
|
X |
|
|
|
|
Redtop |
|
X |
X |
|
|
|
Reed canarygrass |
|
X |
X |
|
|
|
Rhodes grass/Fingergrass |
X |
|
|
|
|
|
Rye, annual or Italian |
|
|
X |
|
|
|
Rye, perennial |
|
X |
X |
|
|
|
Squirreltail, bottlebrush |
X |
|
|
|
|
|
Switchgrass |
|
X |
X |
|
|
|
Timothy |
|
|
X |
|
|
|
Wheatgrass, bluebunch |
X |
X |
|
|
|
|
Wheatgrass, crested |
X |
X |
|
|
|
|
Wheatgrass, intermediate |
X |
X |
|
|
|
|
Wheatgrass, pubescent |
X |
X |
|
|
|
|
Wheatgrass, siberian |
X |
|
|
|
|
|
Wheatgrass, slender |
X |
X |
|
|
|
|
Wheatgrass, stream bank |
X |
X |
|
|
|
|
Wheatgrass, western |
X |
X |
|
|
|
|
Wild ryegrass, Canada |
|
X |
|
|
|
|
Wild ryegrass, Russian |
X |
|
|
|
|
|
Wild ryegrass, Virginia |
|
X |
|
|
|
1 Species with an X in more than one column means tolerance will vary depending on variety, use rate and environmental conditons.
2 Suppression may be expressed as reduction in number of seedheads, seedhead height suppression or foliage height reduction; however, full recovery of the grass can be expected.
WILDFLOWER ESTABLISHMENT AND MAINTENANCE
Due to high degree of variation in genotypes, ecotypes and varieties of wildflowers, tolerances to PLATEAU herbicide can vary dramatically and may be reduced under certain soil types and environmental conditions.Apply PLATEAU herbicide only if some stand thinning or loss can be tolerated.Preemergence applications of low use rates (4 oz/A) to tolerant species, result in the least amount of injury, but may not eliminate it.Postemergence applications of PLATEAU herbicide can result in injury or death of some genotypes, and should be used only as a rescue treatment when weed competition threatens the stand.Use of certain spray adjuvants can also increase wildflower injury and loss of stand.Although most legumes listed in the tolerance table are tolerant to 4 oz/A of PLATEAU herbicide preemergence, some stand thinning may occur.Legumes are more tolerant to post applications, but chlorosis or stunting is possible.Recommendations listed in the tables below are designed for mixed grass/wildflower stands.Less than satisfactory results may occur from applications to monoculture stands.It is recommended to try on a small scale to determine degree of satisfaction on monoculture stands.
For
prairiegrass/wildflower mixtures:Where some
wildflower injury (phytotoxicity, height suppression) can be tolerated, apply
PLATEAU herbicide at the rate to achieve desired weed control, but not to
exceed tolerance rate listed in the table below.Wildflower injury can be reduced or eliminated with pre-emergence
applications.To minimize injury, apply
PLATEAU herbicide at 2 to 4 oz per acre at planting to tolerant species listed
below.Use the 2 oz per acre rate under
cool dry conditions and in low rainfall areas.If postemergence application is made to established
prairiegrass/wildflower mixtures, use the lowest rate of PLATEAU herbicide
necessary to achieve desired weed control (see “WEEDS CONTROLLED”
section).Postemergence application can
result in stand thinning or death due to vast variation in seed sources,
varieties and genotypes.It is recommended
that a small area be tested prior to full application for tolerance of desired
species.The rates listed below are for
those species in which acceptable tolerance has been confirmed on the
varieties/genotypes being treated.
Application of PLATEAU herbicide in conjunction with
an organophosphate insecticide may cause an increase in wildflower injury.
Seedling
Wildflower and Legume Tolerance to PLATEAU herbicide (4 oz/A) 1 in Mixed
Grass/Forb
Stands.
|
Common Name |
Genus Species |
PRE |
POST |
||
|
Alfalfa |
Medicago
sativa |
No |
Yes |
|
||
|
Aster, New England |
Aster novae
angliae |
No |
Yes |
|
||
|
Aster, Prairie |
Aster
tanacetifolius |
No |
Yes |
|
||
|
Baby Blue Eyes |
Nemophila
menziestii |
No |
Yes |
|
||
|
Beggar ticks |
Bidens
frondosa |
No |
Yes |
|
||
|
Bird's Eyes |
Gilia
tricolor |
No |
Yes |
|
||
|
Bishop's Flower |
Anuni majus |
No |
Yes |
|
||
|
Blackeyed Susan |
Rudbeckia
hirta |
Yes |
Yes |
|
||
|
Blanketflower |
Gaillardia aristata |
No |
Yes |
|
||
|
Bundleflower, Illinois |
Desmanthus illinoensis |
Yes |
Yes |
|
||
|
Catchfly |
Silene armeria |
No |
Yes |
|
||
|
Chicory |
Cichorium intybus |
Yes |
Yes |
|
||
|
Clover, Crimson |
Trifolium incarnatum |
Yes |
Yes |
|
||
|
Clover, White |
Trifolium repens |
No |
Yes |
|
||
|
Coneflower, Purple |
Echinacea purpurea |
Yes |
Yes |
|
||
|
Coneflower, Upright Prairie |
Ratibida columnifera |
Yes |
Yes |
|
||
|
Coreopsis, Dwarf Red Plains |
Coreopsis
tinctoria var.
Gay Feather |
Yes |
Yes |
|
||
|
Coreopsis, Lance Leaved |
Coreopsis lanceolata |
Yes |
Yes |
|
||
|
Coreopsis, Plains |
Coreopsis tinctoria |
Yes |
Yes |
|
||
|
Cornflower |
Centaurea cyanus |
No |
Yes |
|
||
|
Cosmos, Garden |
Cosmos bipinnatus |
Yes |
Yes |
|
||
|
Cosmos, Yellow |
Cosmos sulphureus |
Yes |
Yes |
|
||
|
Daisy, Ox-eye |
Chrysanthemum leucanthermum |
Yes |
Yes |
|
||
|
Daisy, Shasta |
Chrysanthemum maximum |
Yes |
Yes |
|
||
|
Five Spot |
Nemophila maculata |
No |
Yes |
|
||
|
Flax, Blue |
Linum perenne |
No |
Yes |
|
||
|
Indian Blanket |
Gaillardia pulchella |
No |
Yes |
|
||
|
Indigo, Blue False |
Baptisia ausralis
|
Yes |
No |
|
||
|
Johnny Jump-ups |
Viola cornuta |
Yes |
Yes |
|
||
|
Lemon Mint |
Monarda citriodora |
No |
Yes |
|
||
|
Lespedeza, Bicolor |
Lespedeza
|
Yes |
Yes |
|
||
|
Lespedeza, Korean |
Lespedeza stipulacea |
No |
Yes |
|
||
|
Lespedeza, Sericea |
Lespedeza cuneata
|
No |
Yes |
|
||
|
Lupine, Perennial |
Lupinu perennis |
Yes |
Yes |
|
||
|
Mexican Hat |
Ratibida columnifera
|
Yes |
Yes |
|
||
|
Partridgepea |
Cassia fasciculata |
Yes |
Yes |
|
||
|
Pea, Calico |
Pisum viganasinensis |
Yes |
Yes |
|
||
|
Pea, Flat |
Lathyrus
sylvestris |
Yes |
Yes |
|
||
|
Pea, Perennial |
Lathyrus
latifolius |
Yes |
Yes |
|
||
|
Phlox, Drummond |
Phlox
drummondii |
Yes |
No |
|
||
|
Poppy, California |
Eschscholzia
californica |
Yes |
No |
|
||
|
Poppy, Corn |
Papaver
rhoeas |
Yes |
Yes |
|
||
|
Poppy, Red Corn |
Papaver sp. |
Yes |
Yes |
|
||
|
Prairieclover, Purple |
Dalea purpurea |
Yes |
Yes |
|
||
|
Prairieclover, White |
Dalea candidum |
Yes |
Yes |
|
||
|
Tick-trefoil, Showy |
Desmodium canadense |
No |
Yes |
|
||
|
Trefoil, Birdsfoot |
Lotus corniculatus |
No |
Yes |
|
||
|
Vetch, Crown |
Coronilla varia |
Yes |
--- |
|
||
|
Vetch, Hairy |
Vicia villosa |
Yes |
--- |
|
||
|
Yarrow, Gold |
Achillea filipendulina |
No |
Yes |
|
||
1 For legumes, at least three
true leaves should be present before a postemergence application.
Established Wildflower and
Legume Tolerance to PLATEAU herbicide (maximum rate1, oz/A) in Mixed Grass/Forb Stands.
|
Common Name |
Genus Species |
PRE |
POST2 |
|
Flax,
Blue |
Linum perenne |
0 |
6 |
|
Indian
Blanket |
Gaillardia pulchella |
0 |
6 |
|
Blanketflower |
Gaillardia aristata |
0 |
8 |
|
Chickory |
Cichorium intybus |
4 |
6 |
|
Daisy,
Shasta |
Chrysanthemum maximum |
4 |
8 |
|
Prairieclover,
Purple |
Dalea purpurea |
4 |
12 |
|
Coneflower,
Upright Prairie |
Ratibida columnifera |
6 |
6 |
|
Mexican
Hat |
Ratibida columnifera |
6 |
6 |
|
Poorjoe |
Diodia teres |
8 |
--- |
|
Lupine |
Lupinu perennis |
8 |
6 |
|
Coneflower,
Purple |
Echinacea purpurea |
8 |
8 |
|
Daisy,
Ox-eye3 |
Chrysanthemum
leucanthermum |
8 |
8 |
|
Leadplant |
Amorpha canescens |
8 |
8 |
|
Lespedeza,
Bicolor |
Lespedeza |
8 |
8 |
|
Milkweed,
Common |
Asclepias syriaca |
8 |
--- |
|
Pea,
Prairie Scurf |
Psoralea esculenta |
8 |
8 |
|
Yarrow,
Gold3 |
Achillea filipendulina |
8 |
8 |
|
Blackeyed
Susan |
Rudbeckia hirta |
8 |
10 |
|
Johnny
Jump-ups |
Viola cornuta |
8 |
12 |
|
Sweetclover |
Melilotus sp. |
12 |
8 |
|
Alfalfa |
Medicago sativa |
12 |
12 |
|
Bundleflower,
Illinois |
Desmanthus illinoensis |
12 |
12 |
|
Lespedeza,
Sericea |
Lespedeza cuneata |
12 |
12 |
|
Partridgepea |
Cassia fasciculata |
12 |
12 |
|
Sensitive
vine |
Mimosa strigillosa |
12 |
12 |
|
Vetch,
Crown |
Coronilla varia |
12 |
12 |
|
Violet,
Wild |
Viola spp. |
12 |
12 |
1 Height suppression or stand
reduction may occur at maximum use rate.For legumes, some yellowing and stunting can occur at higher use rates.
2 Postemergence application
should be made early post on the flowers to reduce injury and increase flower
set.
3 Will not flower.
Wildflower Establishment with PLATEAU herbicide 4 oz/A + PENDULUM
herbicide 2 lbs a.i./A1
|
Common Name |
Genus Species |
PRE2 |
POST3 |
|
|
|
|
|
|
Blackeyed
Susan |
Rudbeckia hirta |
Yes |
Yes |
|
Blanketflower |
Gaillardia pulchella |
No |
Yes |
|
Bundleflower,
Illinois |
Desmanthus illinoensis |
>50% thinning |
Yes |
|
Clover,
Crimson |
Trifolium incarnatum |
>50% thinning |
Yes |
|
Coneflower,
Clasping |
Dracopsis amplexicaulis |
Yes |
Yes |
|
Coneflower,
Upright Prairie |
Ratibida columnifera |
No |
OK |
|
Coneflower,
Purple |
Echinacea purpurea |
Yes |
Yes |
|
Coreopsis,
Dwarf Red Plains |
Coreopsis tinctoria var. Gay Feather |
OK |
OK |
|
Coreopsis,
Plains |
Coreopsis tinctoria |
OK |
Yes |
|
Coreopsis,
Lance Leaved |
Coreopsis lanceolata |
25% thinning |
Yes |
|
Cornflower |
Centaurea cyanus |
No |
OK |
|
Cosmos,
Garden |
Cosmos bipinnatus |
OK |
OK |
|
Cosmos,
Yellow |
Cosmos sulphureus |
Yes |
Yes |
|
Daisy,
Ox-eye |
Chrysanthemum
leucanthermum |
25% thinning |
Yes |
|
Daisy,
Shasta |
Chrysanthemum maximum |
marginal-OK |
Yes |
|
Lupine,
Perennial |
Lupinu perennis |
Yes |
<50% thinning |
|
Partridgepea |
Cassia fasciculata |
25% thinning |
Yes |
|
Poppy,
California |
Eschscholzia californica |
Yes |
25% injury |
|
Yarrow,
Gold |
Achillea filipendulina |
OK |
OK |
1 2 lbs ai/A = 2.4 qts of PENDULUM herbicide 3.3 EC or
3.3 lbs of PENDULUM herbicide WDG
2 Preemergence at planting
3 Postemergence to seedlings
Yes = no injury
No = results in no
wildflower germination or unacceptable injury to seedling flowers.
OK = can be used if thinning
and/or stunting can be tolerated or if establishment is threatened by weed
competition.
Due to the diversity of species and varieties that
exist in areas where wildflowers are grown, the response to PLATEAU herbicide
may vary greatly.Careful testing on
desirable species is recommended to determine if area-wide applications can be
made.Try on a limited area to verify
tolerance in a specific area.
The suitability of PLATEAU herbicide use on
wildflower species not listed, should be determined by treating a small number
of such wild flowers at an appropriate rate, not to exceed 12 oz per acre per
year.Treated wildflowers should be
evaluated 1 to 2 months following application for possible injury.THE USER ASSUMES RESPONSIBILITY FOR ANY
DAMAGE OR OTHER LIABILITY.
SPECIAL WEED
CONTROL
ALWAYS ADD AN ADJUVANT to PLATEAU herbicide (see
"SPRAY ADJUVANTS FOR POSTEMERGENCE APPLICATIONS " section).Research has shown Methylated Seed Oil (MSO)
surfactants provide PLATEAU herbicide with superior control of perennial
weeds.This effect is not always
observed and is most prevalent on waxy leaf species, perennials and weeds under
stress conditions.For the weeds listed
below, it is recommended to use a MSO for best results.The use of nonionic surfactants or silicone
based surfactants may result in less than acceptable control.
Johnsongrass
& Itchgrass: For best results, apply PLATEAU herbicide at the rate of 8 to 12 oz
per acre after johnsongrass or itchgrass has reached 18 to 24 inches in height
at the whorl.The addition of ACCORD or
ROUNDUP PRO at the rate of 8 to 16 oz per acre may improve control after culm
elongation or in dense stands.Use
higher herbicide rates as density increases.Larger grass than specified above can be controlled.
Dallisgrass,
Bahiagrass, Vaseygrass, Paspalum spp.,
Smutgrass:
For dallisgrass, bahiagrass and smutgrass control, apply PLATEAU herbicide
postemergence at the rate of 10 to 12 oz per acre, after grass has reached 100%
green-up.For vaseygrass apply PLATEAU
herbicide at the rate of 4 to 6 oz per acre postemergence after grass has
reached 100% green-up and is from 3 to 8 inches in height.The addition of ACCORD or ROUNDUP PRO at the
rate of 12 to 16 oz per acre will improve efficacy.Use higher herbicide rates as target grass weed densities and/or
maturity increase.The addition of
PENDULUM herbicide will provide increased preemergence control of these grasses
from seed.
Leafy Spurge: For best results, apply PLATEAU herbicide at 8 to 12 oz per
acre in late summer or fall (late August through mid-October).Consecutive year applications will optimize
long term control.PLATEAU herbicide at
12 oz/A applied spring or fall, or 4 oz/A in the spring following an 8 oz/A
fall treatment may result in excessive injury to cool season grasses in some
areas.For best results, always use a
methylated seed oil at 2 pints per acre.Two pints per acre of Nitrogen fertilizer (see“SPRAY ADJUVANTS FOR
POSTEMERGENCE APPLICATIONS” section) may also be added to the spray tank to increase
leafy spurge control, however, this may increase injury to desired species of
grasses and forbs.The use of nonionic
and silicone based surfactants have resulted in little or no control of leafy
spurge.Approximate dates for fall
timing in North and South Dakota is late August through September; for Nebraska
and Iowa is mid September through mid-October.This application should be made after good soil moisture is present but
prior to the leafy spurge losing its milky sap flow due to a killing frost.To check and see if the milky sap flow has
been affected by a frost simply break the main stem of the leafy spurge and if
milky sap flows from the break then PLATEAU herbicide can still be applied.
Canada Thistle:Spring applications of 12 oz PLATEAU herbicide plus 2 pints of
Methylated Seed Oil per acre applied postemergence to Canada thistle will
provide control and/or suppression of above ground biomass.For best results, apply when thistle is in
the rosette to early bolt.Applications
made at flowering will provide knock down of existing foliage but may result in
root sucker sprouting.
Tall Fescue
Control:Tall fescue can be controlled by using
PLATEAU herbicide at the rate of 12 oz plus Methylated Seed Oil at 2 pints per
acre.The addition of ACCORD,
glyphosate or ROUNDUP PRO and/or Nitrogen fertilizer (see "SPRAY ADJUVANTS
FOR POSTEMERGENCE APPLICATIONS" section) to the above mix will aid in
control.Tall fescue must be actively
growing for optimum control.If tall
fescue has reached summer dormancy, control may be poor.