US EPA, Pesticides, Label, PROWL H2O HERBICIDE, 2/15/2011

38 Pages·2012·2.67 MB·English

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
WASHINGTON, D.C. 20460
OFFICE OF CHEMICAL SAFETY
_ AND POLLUTION PREVENTION
Craig D. Kleppe, Ph.D.
---BASF Corporation------- -
__ ~~:-:26.Davis Drive
- -: P.O. Box 13528
FEB 1 5-Z0\\-
-~-:--Research Triang1ePatk,-NC27709
.
-Dear Dr. Kleppe:
-
Subject: Labeling Amendment; General Revisions
-PROWL H20 Herbicide
EPA Registnitlon No. 241~418
Submission Date: January 10,2011
The labeling referred to above, submitted in connection with registration under the Federal
Insecticide,Fungicide, and Rodenticide Act, as amended, is acceptable. A stamped copy is
enclosed for your records. Please submit one (1) final printed copy-for the above mentioned label
before releasing the product for shipment. If you have any questions regarding this label, please
contact ine at [phone] or [email protected].
Sincerely yours,
L~~
Kable Bo Davis
Product 11anager 25
Herbicide Branch
Registration Division (7505P)
Enclosure- Stamped Labeling
fJi-O a}l] If'l:
fi-1r~E
D·BASF
FEB 1 5 2011
.1
The Chemical Company
herbicide
For Use in Selected Crops
(See Table 1. Crop Uses) ..
Active Ingredient*:
pendimethalin: N-(1-ethylpropyl)-3,4-dimethyl-2,6-dinitrobenzenamine ..... 38.7%
Other Ingredients: ........................................... 61.3%
Total: ...... :: .............................................. 100.0%
*1 gallon contains 3.8 pounds of pendimethalin formulated as an aqueous capsule suspension.
EPA Reg. No. 241-418 . EPA Est. No.
KEEP OUT OF REACH OF CHILDREN
CAUTION/PRECAUCrON
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.)
See inside for complete First Aid, Precautionary Statements, Directions For Use,
Conditions of Sale and Warranty, and state-specific crop and/or use site restrictions.
In case of an emergency endangering life or property involving this product,
call day or night 1-800..;832-HELP (4357).
Net Contents:
BASF Corporation
26 Davis Drive, Research Triangle Park, NC 27709
FIRST AID
o Call a poison control center or doctor immediately for treatment advice.
• Have person sip a glass of water if able to swallow.
If swallowed
• DO NOT induce vomiting unless told to do so by a poison control center or doctor.
• DO NOT giye anything by mouth to an unconscious person.
• Hold eyes open and rinse slowly and gently with water for 15 to 20 minutes.
If in eyes • Remove contact lenses, if present, after first 5 minutes; then continue rinsing.
• Call a poison control center or doctor for treatment advice.
• Take off contaminated clothing.
If on skin • Rinse skin immediately with plenty of water for 15 to 20 minutes.
• Call a poison control center or doctor for treatment advice.
..... - -- .~ .... - HOTLINE NUMBER .. - ~ -
.... - .. _." . _-.- -- - -_.-. "-_ ... ----"
Have the 'product container or label with you when calling a poison control center or doctor or goingfoi'treatment.
YouJn~y ~I$o.g()otact BASF CorpQra,tion for emergency medical treatr:nentinformation: 1-800-832~HELP(4357) .
. : ... ~ -.- : _. . -. -:.
. Precautionary Statements USER.SAFETY RECOMMENDATIONS
_.. HazardstOffl·tFrtans~ndDomesti<:.Artimals Users should:
CAUTION. CaLlses moderate eye irritation. Harmful if • Wash hands before eating, drinking, chewing gum,
using tobacco, or using the toilet.
swallowed or absorbed through the skin, Avoid contact
with skin, eyes or clothing. • Remove clothing/PPE immediately if pesticide gets
inside. Wash thoroughly and put on cleaD clo~hing.
Personal Protective .E quipment (PPET
• Remove PPE immediately after handling this product.
Wash the outside of gloves before removing. As soon
Some materials that are chemically resistant to this prod
as possible, wash thoroughly and change into clean
uct are listed belov"':lf you want more options, follow the
clothing.
instructions for Category A on an EPA chemical
resistance category selection chart.
Environmental Hazards
Applicators and other handlers must wear:
This product is toxic-to fish. DO NOT apply directly to
• Long-sleeved shirt and long pants
water, or to areas where surface water is present, or to
• Chemical-resistant gloves made of waterproof material
intertidal areas belOW the mean high water mark. Drift and
such as butyl rubber ~14 mils, nitrile rubber ~ 14 mils, runoff from treated areas may be hazardous to aquatic'
or neoprene rubber ~ 14 mils organisms in adjacent aquatic sites. DO NOT contaminate
• Shoes plus socks water when disposing of equipment washwaters or
Follow manljfactur~r'sinstructions for cleaning/maintaining rinsate.
PPE. If no such instructions for washables exist, use Endangered Species Protection
detergent and hot water. Keep and wash PPE separately
This product may have effects on federally listed threat
from other laundry.
ened or endangered plant species or their critical habitat.
Engineering' Controls When using this product, you must follow the measures
contained in the Endangered Species Protection Bulletin
When handlers use closed systems, enclosed cabs, or air for the county or parish in which you are applying the pes
craft in a manner that meets the requirements listed in the
ticide. To determine whether your county or parish has a
Worker ProtectionStandard (WPS) for agricultural pesti-
Bulletin, and to obtain that Bulletin, consult
-cides [(40 CFR 170.240)(d)(4-6)], the handler PPE
http://www.epa.gov/espp/, or call 1-800-447-3813
requirements may be reduced or modified as specified in no more than 6 months before using this product. Appli
the WPS.
cators must use Bulletins that are in effect in the month in
which the pesticide will be applied. New Bulletins will gen
erally be available trom the above sources 6 months prior
to their effective dates.
If endangered plant species occur in proximity to the appli
cation site, the following mitigation measures are required:
• If applied by ground, leave an untreated buffer zone of
200 feet. The product must be applied using a low
2
boom (20 inches above the ground) and ASAE fine to
STORAGE AND DISPOSAL
medium/coarse nozzles. (continued)
• If applied by air, leave an untreated buffer zone of Triple rinse containers small enough to shake
170 feet. Must use straight-stream nozzles (0-6 or (capacity S; 5 gallons) as follows: Empty the remaining
larger); wind can be no more than 8 mph, and release contents into application equipment or a mix tank and
height must be 15 feet or less. drain for 10 seconds after the flow begins· to drip. Fill the
container 1/4 full with water and recap. Shake for
10 seconds. Pour rinsate into application equipment or a
Directions For Use
mix tank, or store rinsate for later use or disposal. Drain
It is a violation of federal law to use this product in a man for 10 seconds after the flow begins to drip. Repeat this
ner inconsistent with its labeling. This label must be in the procedure two more times.
possession of the user at the time of pesticide application. Triple rinse containers too large to shake
Observe-all-cautions and limitations in'thrslabel and the (capacity->5 gallons) as follows"Emf3tytheremaining
labelsQGir:oduC:ts used in combinatJon:wfth'Prowl" H20 cont!3ilt~JrJto application equipme:riIgrifrTiix tank. Fill the
herbicii;l~, Th$ uj3e of Prowl H20 nbtcbrisistent with this container 1/4 full with water. Repla.c::.El and tighten clo
label c~Q~r?s.l:Jlt in)njury to crops, anilTlCils, _Clr_ pEl.rsons. sures. Tip container on its side and roll itback and forth,
KeepcClntainers closed to avoid spills and contamination. ensurlng-a:fleasfone complete revolution-, for 30 sec
onds.Stand the container on itseridcindtip irback and
DO NOT apply this product in a way that will contact
forth several times. Turn the container over onto its other
worke'rsor other persons, either directly or-through drift,
end and tip it back·and forth,several times. Empty the
.. Only protededhandlers may be inthe area during applica-
rinsate into application equipnientor a mix tank, or store
.. tion.· For any"requirements specific toyour state 0;' 'tribe,
rinsate for later use "or disposal. Repeat this procedure
consult the agency responsible for pesticide protection.
two more times.
BASF intends that this product may not be used for manu
Pressure rinse as follows: Empty the remaihing
fagturing productsf()r application to turf and,ornamentals.
contents into application equipment or mix tank and
DO NOT enter or allow other people (or"pets) to enter the continue to drain for 10 seconds after the flow begins to
treated area until sprays have dried. drip. Hold container upside down over application equip
ment or mix tank, Or collectrinsate for later use or"
disposal. Insert pressure rinsing nozzle in the side of the
STORAGE AND DISPOSAL
container and rinse at about 40 PSI for at least 30 sec
onds. Drain for 10 seconds after the flow begins to drip.
DO NOT contaminate water, food, or feed by storage or
Refillable Container. RefH I this container with pesticide
disposal. Open dumping is prohibited.
only. DO NOT reuse this container for any other pur
Pesticide Storage pose. Triple rinsing the container before final disposal is
Prowl H 0 freezes around 150 F and is stable under the responsibility of the person disposing of the con
2
conditions of freezing and thawing. Product that has tainer. Cleaning before refilling is the responsibility of the
been frozen should be thawed and recirculated prior to refiller.
use.
Triple rinse asfQU9W$:TQclean the containerpefore
Pesticide Disposal final disposal, empty the remaining contents from this
Pesticide wastes are toxic. Improper disposal of excess container into application equipment or mix tank. Fill the
pesticide, spray mixture, or rinsate is a violation offederal container about 10% full with water. Agitate vigorously or
law. recirculate water with the pump for 2 minutes. Pour or
pump rinsate into application equipment or rinsate col
If these wastes cannot be disposed of by use according
lection system. Repeat this rinsing procedure two more
to label directions, contact your State Pesticide or
times.
Environmental Control Agency, or the Hazardous Waste
representative at the nearest EPA Regional Office for (continued)
guidance.
Container Disposal
Nonrefillable Container. DO NOT reuse or refill this
container. Triple rinse or pressure rins~ container (or
equivalent) promptly after emptying; then offer for recy
cling, if available, or reconditioning, if appropriate, or
puncture and dispose of in a sanitary landfill, or by incin
eration, or by other procedures approved by state and
local authorities.
(continued)
3
STORAGE AND DISPOSAL AGRICULTURAL USE REQUIREMENTS
(continued)
When this container is empty, replace the cap and seal Use this product only in accordance with its labeling and
all openings that have been opened during use; return with the Worker Protection Standard, 40 CFR part 170.
the container to the point of purchase or to a designated This standard contains requirements for the protection of
location. This container must only be refilled with a pesti agricultural workers on farms, forests, nurseries, and
cide product. Prior to refilling, inspect carefully for greenhouses, and handlers of agricultural pesticides. It
damage such as cracks, punctures, abrasions, worn-out contains requirements for training, decontamination,
threads and closure devices. Check for leaks after notification, and emergency assistance. It also contains
refilling and before transport. DO NOT transport if this specific instructions and exceptions pertaining to the
container is damaged or leaking. If the container is dam statements on this label about personal protective
aged, or leaking, or obsolete and not returned to the equipment (PPE) and restricted-entry inteNal. The
point of purchase or to a designated location, triple rinse requirements in this box only apply to uses of this prod
emptied container and offer for recycling, if available, or uct that are covered by the Worker Protection Standard.
dispose of container in compliance with state and local
DO NOT enter or allow worker entry into treated areas
regulations.
during the restricted-entry inteNal (REI) of 24 hours.
EXCEPTION: If the product is soil-injected or soil
In Case of Emergency
incorporated, the Worker Protection Standard, under
certain circumstances, allows workers to enter the treat
In case of large-scale spillage regarding this product, call:
ed area if there will be no contact with anything that has
CHEMTREC 1-800-424-9300 been treated.
BASF· Corporation 1-800-832-HELP (4357)
PPE required for early entry to treated areas that is per
Steps to be taken in case material is released or mitted under the Worker Protection Standard and that
spilled: involves contact with anything that has been treated,
such as plants, soil, or water, is:
Dike and contain the spill with inert material (sand, earth,
etc.) and transfer liquid and solid diking material to sepa • Coveralls
rate containers for disposal. Remove contaminated • Chemical-resistant gloves made of waterproof material
clothing and wash affected skin areas with soap and such as butyl rubber;::: 14 mils, nitrile rubber;::: 14 mils,
water. Wash clothing before reuse. Keep the spill out of all or neoprene rubber;::: 14 mils
sewers and open bodies of water. • Shoes plus socks
4
Table 2. Weeds Controlled
Product Information
(see crop sections for additional weeds controlled)
Prowll!> H 0 herbicide is a selective herbicide for con
2
trolling most annual grasses and certain broad leaf weeds Weeds .. controlled with Prowl H20 applied up to 4 pts/A
as they germinate. Refer to Table 1 for crop uses. Refer
Grasses
to Table 2 for a complete list of controlled weeds.
Annual ryegrass* Italian ryegrass*
Prowl H20 will not control established weeds.
Barnyardgrass Japanese brome'
Table 1. Crop Uses
Canarygrass* Johnsongrass (seedling)
alfalfa Cheat* Jointed goatgrass'
artichoke Crabgrass Oat, wild*
asparagus Crowfootgrass Panicum, fall
Downy brome* (Cheatgrass) Panicum, Texas
bearing citrus fruit trees
Foxtail, giant Sandbur, field
bearing grape
Foxtail, green Shattercane*
bearing nut trees
Foxtail, yellow Signalgrass*
oearing olive trees
Goosegrass Wild proso millet*
bearing pome fruit trees
Hairy chess* Witchgrass
bearing stone fruit trees
Itchgrass* Woolly cupgrass*
Bermudagrass
Broadleaves
Brassica head and stem vegetables
carrots Amaranth, Palmer Mustard, black
clover grown for seed Bugloss, small Pigweed species
corn (field, pop, field seed, pop seed, fresh sweet) Carpetweed Purslane
cotton Chickweed, common* Pusley, Florida
edible beans Henbit Shepherdspurse*
fallow Kochia Smartweed, Pennsylvania*
fruiting vegetables (tomato, pepper) Lady's thumb Spurge, annual
garlic Lambsquarters, common Velvetleaf*
grain sorghum Lambsquarters, slimleaf Waterhemp species
leek London rocket*
lentils and peas ·Suppression. but controlled when Prowl H20 use rate exceeds 4 ptS/A.
mint
Weeds controlled with Prowl H20 applied at 4 pts/A or
non bearing fruit tree and nut tree crops
greater
non bearing olive trees
Grasses
non bearing vineyards
Annual bluegrass Lovegrass
onions and shallots (dry bulb, green)
Browntop panicum Sprangletop, Mexican
peanuts
Grass, Guinea Sprangletop, red
perennial grasses grown for seed
Junglerice Swollen fingergrass
potatoes
rice Broadleaves
soybeans Doddert Prostrate, knotweed
strawberry Fiddleneck Puncturevine
sugarcane Morningglory**
sunflowers f For optimum dodder control, use the highest labeled rate of Prowl H20 speci-
fied in the specific crop.
tobacco
wheat "Suppression
Mode of Action
Prowl H 0 is a meristematic inhibitor that jnterferes with
2
the plant's cellular division or mitosis. This and/or other
products with the meristematic inhibiting mode of action
may not effectively control naturally occurring biotypes of
some of the weeds listed on this label. A weed biotype is a
5
naturally occurring plant within a given species that has a capable of giving uniform incorporation; two-pass incorpo
slightly different, but distinct, genetic makeup from other ration usually results ina more consistent result.
plants. Other herbicides with the meristematic inhibiting
Surface Incorporated Application. Uniformly apply
mode of action include other dinitroaniline herbicides,such
Prowl H 0 as broadcast or banded treatment to soil sur
as trifluralin. If naturally occurring meristematic inhibiting 2
face underneath established trees and/or in ground areas
resistant biotypes are present in a field, Prowl® H 0
2 between trees rows. Incorporate into upper (1 inch to
herbicide and/or any other meristematic inhibiting mode
2 inches) soil surface using either rainfall, sprinkler irriga
of action herbicide should be tank mixed or applied
tion, or shallow mechanical incorporation using an
sequentially with an appropriate registered herbicide hav
implement capable of giving uniform incorporation; two
ing a different mode of action to ensure control.
pass mechanical incorporation usually results in a more
consistent result.
Application Rate
Preemergence 'Surface Application. Broadcast treat
Use rates for Prowl H 0 when used alone, in tank mix, or ment uniformly to the soil surface at planting and up to
2
2 days after planting. Rainfall, sprinkler irrigation, or shal
for sequential applications are given in Crop-specific
low mechanical incorporation after application is required
Information. Use rates of this product ~ary by soil texture
and organic matter. See Table 3 for soil texture groupings to move this product into the upper soil surface where
weed seeds germinate. If adequate rainfall or irrigation
used in this label.
does not occur and weed seedling emergence begins, a
Table 3. Soil Texture Groups shallow cultivation or rotary hoeing will improve
,: .,. . -, FWle .'
·:·;g9~rAA;:; " I>' • 'Medi~m' performance.
.: \-::< • '~'. ". ... .. J ."• ••• - "
sands sandy clay loams' silty clay loams' Early Postemergence Application. Prowl H 0 must be
2
loamy sands sandy clays silty clays applied priOr to weed seedling emergence or in a tank mix
sandy loams loams clay loams with products that control the emerged weeds. Refer to
silt loams clays Crop-specific Information for specific postemergence
silts application recommendations by crop.
'Sometimes considered transitional soils and may be classified as either Postemergence Incorporated Application (CULTI
medium-or fine-textured soils. SPRAY). Prior to application, crop must be cultivated in
For peat and muck soils. Prowl H 0 may be used on peat such a manner as to throw at least 1 inch of soil over the
2
and muck soils, but weed control may be inconsistent and/or base of the crop plants. This will prevent direct contact of
reduced. Use maximum labeled use rate allowed in the specific Prowl H 0 and the zone of brace root formation.
2
crop. Prowl H 0 must be applied broadcast with a ground
2
sprayer when crop is at least 4 inches tall up to layby. Use
drop nozzles if crop foliage will prevent uniform coverage
Application Timings
of the soil surface within the rows. Thoroughly and uni
Prowl H20 will provide most effective weed control when formly incorporate Prowl H20 treatments into the soil:
applied by ground or aerial equipment and subsequently 1. With a sweep-type or rolling cultivator set to provide
incorporated into soil by rainfall, sprinkler irrigation, or thorough incorporation in the top 1 inch of soil, or
mechanical tillage prior to weed seedling germination. 2. With adequate overhead irrigation water or rainfall. See
Prowl H 0 can also be applied through chemigation, Crop-specific Information (Corn and 'Grain
2
including flooded basin irrigation systems. Prowl H 0 is Sorghum) for more details on (CULTI-SPRAY)
2
recommended for preplant surface, preplant incorporated, application.
surface incorporated, preemergence, early postemer
Layby Application. Apply Prowl H 0 directly to the soil
2
gence, postemergence incorporated (CULTI-SPRAY) or
between rows as a directed spray following the last normal
layby treatment. See Crop-specific Information for spe
cultivation (Iayby). See Crop-specific Information for
cific application directions and restrictions by crop.
more details on layby application.
Preplant Surface Application. For use in minimum
Split Application. Prowl H20 may be applied preplant
tillage or no-tillage production systems, apply Prowl H 0
2 incorporated up to 60 days prior to planting and followed
alone or in tank mixes up to 45 days before planting.
by a preemergence application at planting or up to 2 days
When making early preplant surface applications (15 to
after planting. The total amount of Prowl H 0 applied per
2
45 days prior to planting), Prowl H 0 should be tank
2 acre per season cannot exceed the highest labeled rate
mixed or followed by a postemergence herbicide applica
for any given soil type. See Crop-specific Information
tion. Rainfall or sprinkler irrigation after application is
for more details on split applications.
required to move this product into the upper soil surface
where weed seeds germinate. Fall Application. Prowl H20 may be used in fall applica
tion programs in certain crops. See Crop-specific
Preplant Incorporated Application. Apply Prowl H 0
2 Information for details on fall application timing.
and incorporate into the upper (1 inch to 2 inches) soil sur
face up to 60 days before planting. Use an implement
6
b. If the mixture separates but mixes readily with shak
Spraying Instructions
ing, the mixture can be used provided that good
ProwlC!> H20 herbicide may be applied using either water agitation is maintained in the spray tank.
or sprayable fluid fertilizer (such as straight 32-0-0 or c. If separation of the mixture occurs and agitation does
28-0-0) as the spray carrier. Additionally, Prowl H20 may not correct this problem, a compatibility agent is
be impregnated on dry bulk fertilizer. Sprayable fluid fer needed.
tilizer as a carrier is NOT recommended for use after crop 6. If the need for a compatibility agent is demonstrated,
emergence unless the typical fertilizer burn symptoms on the following procedure is recommended: Using a clean
the crop are acceptable. quart jar, repeat step 1 above and add 1/2 teaspoon of
the compatibility agent to the liquid fertilizer. Mix well
Aerial Application
and repeat steps .2, 3 and 4. If separation or precipita
Uniformly apply in 5 or more gallons of water per acre. tion occurs with the compatibility agent, DO NOT use
Exercise caution to minimize drift. DO NOT apply during Prowl H 0 with that specific liquid fertilizer.
2
periods of gusty winds or when wind conditions favor drift
Ground Application (Band)
ing. Spray drift can cause injury to sensitive crops. Use a
flagman or an automatic mechanical flagging unit on the Uniformly apply the broadcast equivalent rate and volume
aircraft to avoid overlapping and possible crop injury. per acre. To determine:
Ground Application (Broadcast) band width in inches broadcast rate band rate
row width in inches x per acre per acre
Uniformly apply with properly calibrated ground equipment
in 10 or more gallons of water per acre or 20 or more gal band width in inches broadcast band volume
row width in inches x volume per acre == per acre
lons of liquid fertilizer per acre. Use sprayers equipped
with appropriate nozzles that provide uniform and accurate
Ground Application (Dry Bulk Fertilizer)
spray distribution and minimize drift. Keep the bypass line
on or near the bottom of the tank to minimize foaming. Apply Prowl H 0/dry bulk fertilizer mixtures only with
2
Nozzle and in-line screens must be no finer than 50 mesh. ground equipment. DO NOT impregnate Prowl H 0 onto
2
Application of Prowl H20 during periods of gusty winds coated ammonium nitrate or limestone because these
may result in uneven applications. DO NOT apply materials will not absorb the herbicide. Dry fertilizer blends
Prowl H20 postemergence in liquid fertilizers. containing mixtures of ammonium nitrate or limestone may
If liquid fertilizer/herbicide(s) mixture separates in the spray be impregnated with Prowl H20. A minimum of
200 pounds of impregnated dry bulk fertilizer, excluding
tank, clogged equipment and uneven application can
the weight of ammonium nitrate or limestone, must be
result. Always predetermine the compatibility of
Prowl H 0 alone or with other herbicides based on the applied per acre.
2
. following compatibility jar test: Use the following formula to determine the amount of
Prowl H 0 to be impregnated on a ton of dry bulk fertili
1 . Add 1 pint of fertilizer to a quart jar. 2
zer based on the rate of fertilizer to be applied per acre:
2. Add 1 to 4 teaspoon(s) of the dry flowable (OF), wet
table powder 0NP), aqueous solution (AS), flowable (F)
or liquid (L) formulation (depending on' mixing ratio 2000 Prowl H 0 Prowl H 0 per
2 2
required) to the liquid fertilizer. Determine the number of pounds of dry x (rate per acre) ton of fertilizer
fertilizer per acre
teaspoons of the formulation to add by the following
formula:
To impregnate Prowl H 0 on bulk fertilizer, use a closed
2
rotary-drum mixer or other commonly used dry bulk fertili
Ibs or pts of product/acre x 11.4 == teaspoons?f herbici~e to
zer blender equipped with suitable spray equipment. Spray
gallons of fertilizer/acre add to 1 pint of fertilizer
nozzles must be placed to provide uniform coverage of
Prowl H 0 onto the fertilizer during mixing.
2
3. Close the jar and agitate until the herbicide(s) are evenly
dispersed in the liquid fertilizer. If the materials do not Apply the Prowl H20/dry bulk fertilizer mixture with an
disperse well, it may be necessary to slurry the chemi accurately calibrated dry fertilizer spreader. The
cals in water before adding to the fertilizer. Prowl H20/dry bulk fertilizer mixture must be spread uni
4. After dispersing the materials, add appropriate number formly on the soil surface.
of teaspoons of Prowl H20 to the jar and shake well. Chemigation Application via Sprinkler
Add water soluble concentrate herbicides to the mixture
Irrigation and Drip Irrigation Sys~ems
last and agitate. Let the mixture stand for 30 minutes;
then observe the results. Look for signs of separation: Prowl H 0 may be applied as a chemigation treatment
2
an oily layer or globules, sludge, flakes or other through sprinkler irrigation and drip irrigation systems.
precipitates. Refer to Crop-specific Information sections for
5. Evaluate compatibility. individual crops. DO NOT apply Prowl H 0 via chemiga
2
a. If the herbicide(s) and liquid fertilizer mixture does not tion to crops unless specified in Crop-specific
separate, use this mixture in your spray tank. Information section.
7
Apply this product ONLY through a sprinkler irrigation sys
3. The total area (in square feet) wet by your system = C
tem of the following type: center pivot, lateral move, end C = B x acres covered by system
tow, side (wheel) roll, traveler, big gun, solid set, or hand
move. 4. Rate per treated acre of Prowl H20
(based on length of control desired) = R
Apply this product ONLY through a drip. irrigation system
that has emitters above the soil surface.
Amount of
C
DO NOT apply this product through any other type of Prowl H20 S 43,560 x R qts of Prowl H20
sprinkler irrigation or drip irrigation system. to inject = S
Uniform distribution of Prowl!!> H20 herbicide-treated irri Example:
gation water is the sole responsibility of the applicator and If the average distance from emitter to perimeter of wetted area
is required to avoid crop injury, 'Iack of herbicide effective measured 1 inch below soil surface is 13 inches, then
ness or illegal pesticide residues in the crop. If you have A = 3.14 x (13 inches x 13 inches),
any questions about calibration, contact.State Extension and A = 530.7 square inches
Service specialists, equipment manufacturers, or other If there are 300 emitters per acre, then
experts.
8 = 530.7 x 300 and B = 1105.6 square feet
The system must be properly calibrated (with water only) 144 wetted per acre
to ensure that the amount of Prowl H 0 applied corre
2 If the system covers 20 acres, then
sponds to the specified rate. Apply Prowl H 0 in 1/2 to =
2 C 1105.6 square feet per acre x 20 acres and
3/4 inch of water during the first sprinkler set (use at least C = 22,112 square feet wetted by system
1 inch of water in the states of New Mexico, Oklahoma
If the desired application rate per treated acre is
and Texas). BASF recommends that Prowl H20 is mixed 2.0 qts of Prowl H20, then
with water at a 1: 1 ratio in the injection nurse tank to
assist with product flowability. Maintain agitation in the
injection nurse tank to keep a uniform herbicide suspen s = 22,112 x 2.0 and S = 1.0 qt = amount of Prowl H 0
2
sion during application. When application is complete, 43,560 to inject into the system
flush the system with water.
Chemigation Instructions Special Precautions for Chemigation
(for low-volume micro sprinklers) 1 . DO NOT apply when wind speed favqrs drift beyond
Output of low-volume sprinkler equals 4 to 50 gallons per the area intended for treatment.
2. DO NOT connect an irrigation system used for pesti
hour (gph) per emitter. Point of application MUST be
cide application to a public water system unless the
above ground.
pesticide label prescribed safety devices for public
Irrigation system should run a suffiCient amount of time water systems are in place.
prior to Prowl H20 injection to have all emitters function 3. A person knowledgeable of the chemigation system and
ing properly. After system is operating properly, length of responsible for its operation, or under the supervision of
injection should be such that at one period of time during the responsible person, shall shut the system down and
the injection, the first and last emitters in the system con make necessary adjustments should the need arise.
tain Prowl H20-treated water. Add Prowl H20 to the 4. Tail water (runoff water) from chemigation that contains
supply tank already filled with the volume of water required Prowl H 0 should be recirculated and/or contained in
2
for the injection period. Maintain proper agitation in the field in a cistern or holding reservoir from the initial
Prowl H20 injection tank. Mix Prowl H20 in clean water application and/or used only on adjacent, approved
and inject down-line from filters. Following Prowl H20 crops for which Prowl H20 is registered for this type of
injection, flush system for a period of time sufficient to application.
clear the line of Prowl H20. (If Prowl H20 is applied dur 5. The pesticide injection pipeline must contain a function
ing a normal irrigation cycle, make injection during the last al, automatic, quick-closing check valve to prevent the
stage.) flow of fluid back toward the injection pump. It must
Chemigation Calibration also contain a functional, normally closed, solenoid
operated valve located on the intake side of the injec
(for'low-volume micro sprinklers)
tion pump and connected to the system interlock to
Calculation of use rate is based on wetted area around
prevent fluid from being withdrawn from the supply tank
emitters - NOT on tree acres. To determine correct
when the irrigation system is either automatically or
amount of Prowl H 0, use the following formula:
2 manually shut down.
6. The sprinkler chemigation system must contain a func
1 . Treated area per each emitter = A
= tional check valve, vacuum relief valve, and low
A 3.14 x (radius x radius)
pressure drain appropriately located on the irrigation
pipeline to prevent water source contamination from
2. The area in square feet A x emitters/acre
B= backflow. In addition, systems must use a metering
wet in each acre = B 144
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pump, such as a positive displacement injection pump 4. A person knowledgeable of the chemigation system
(e,g. diaphragm pump) effectively designed and con and responsible for its operation, or under the supervi
structed of materials that are compatible with pesticides sion of the responsible person, shall shut the system
and capable of being fitted with a system interlock. down and make necessary adjustments should the
7. The sprinkler chemigation system must contain func need arise.
tional interlocking controls to automatically shut off the 5. BASF recommends that Prowl H 0 is mixed with
2
pesticide injection pump when the water pump motor water at a 1: 1 ratio in the injection nurse tank to assist
stops, or in cases where there is no water pump, when with product flowability. Maintain agitation in the
the water pressure decreases to the point where pesti injection nurse tank to keep a uniform herbicide
cide distribution is adversely affected. suspension during application. When application is
8. The irrigation line or water pump must include a func complete, flush the system with water.
tional pressure switch that will stop the water pump 6. Systems using a gravity-flow pesticide dispensing sys
motor when the water pressure decreases to the point tem must meter the pesticide in the water at the head
where pesticide distribution is adversely affected. of the field downstream of a hydraulic discontinuity,
such as a drop structure or weir box, to decrease
Chemigation Systems Connected to Public
potential for water source contamination from back
Water Systems
flow water.
1. Public water system means a system 'for the provision 7. Tail water (runoff water) from flood, flooded basin, or
to the public of piped water for human consumption if gravity flow irrigation that contains Prowl H 0 should
2
such system has at least 15 service connections or reg be recirculated and/or contained in the field in a cis
ularly serves an average of at least 25 individuals daily tern or holding reservoir from the initial application
at least 60 days out of the year. and/or used only on adjacent approved crops for
2. Chemigation systems connected to public water sys which Prowl H 0 is registered for this type of
2
tems must contain a functional, reduced-pressure zone application.
backflow preventer (RPZ) or the functional equivalent in 8. Systems utilizing a pressurized water and pesticide
the water supply line upstream from the point of pesti injection system must meet the following
cide introduction. As an option to the RPZ, the water requirements:
from the public water system should be discharged into • The system must contain a functional check valve,
a reservoir tank prior to pesticide introduction. There vacuum relief valve, and low-pressure drain appro
shall be a complete physical break (air gap) between the priately located in the irrigation pipe to prevent water
outlet end of the fill pipe and the top or overflow rim of source contamination from backflow.
the reservoir tank of at least twice the inside diameter of • The pesticide injection pipeline must contain a func
the fill pipe. tional, automatic, quick-closing check valve to pre
3. All chemigation systems connected to public water sys vent flow of fluids back toward the injection pump.
tems must also follow restrictions listed in the preceding • The pesticide injection pipeline must also contain a
section titled Chemigation. functional, normally closed solenoid-operated valve
located on the intake side of the injection pump and
Applications via Flood, Flooded Basin, or
connected to the system interlock to prevent fluid
Gravity Flow Irrigation Systems
from being withdrawn from the supply tank when
ProwlGl H 0 herbicide may be applied via flood, flooded the irrigation system is either automatically or manu
2
ally shut down.
basin, or gravity flow irrigation systems, but only to the fol
lowing crops: bearing and nonbearing fruit and nut trees, • The system must contain a functional interlocking
control to automatically shut off the pesticide injec
bearing and non bearing olive trees, bearing and nonbear
ing vineyards, and alfalfa. ticm pump when the water pump stops.
• The irrigation pipe or water pump must include a
Use Instructions and Precautions for Flood,
functional pressure switch, which will stop the pump
Flooded Basin, and Gravity Flow Irrigation motor when the water pressure decreases to the
1. Prowl H 0 may be applied through flood, flooded point where pesticide distribution is adversely
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basin, or gravity flow irrigation systems designed to affected.
uniformly distribute irrigation water along the soil sur • Systems must use a metering pump, such as a
face. Solid set systems utilizing tall riser for overhead positive displacement injection pump (e.g. dia
application are excluded. phragm pump) of effective design and constructed
2. Follow all label directions for Prowl H 0 regarding of materials that are compatible with pesticides and
2
rates per acre, timing of application, ·and crop-specific;; capable of being fitted with a system interlock.
restrictions and limitations. • Any alternative to the above safety devices must
3. DO NOT connect an irrigation system used for pesti conform to the list of EPA-approved alternative
cide application to a public water system unless the devices.
pesticide label prescribed safety devices for public
water systems are in place.
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