Weed Control Recommendations for Kentucky Grain Crops
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AGR-6 University
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of Kentucky
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2021 College
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Agriculture,
and Environment
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Weed Control
Recommendations
for Kentucky Grain Crops
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DevelopmentNOTICE
Kentucky Agriculture Water Quality Act
In 1994, the Kentucky General Assembly passed The Kentucky Agriculture Water Quality Act
(AWQA). The AWQA (KRS 224.71-100 through 224.71-140) states that landowners of 10 acres or
more that conduct or allow agriculture or silviculture (forestry) production on their land were
required to develop and implement a water quality plan by October 23, 2001.
These individual water quality plans will be based upon the guidance found in the Kentucky
Agriculture Water Quality Plan. One of the six sections that make up the Kentucky Agriculture
Water Quality Plan is Pesticides and Fertilizer (Section 2). Therefore, if your agriculture operation,
of 10 acres or more, involves the use and storage of agriculture chemicals, then your water quality
plan must include information about those pesticide and fertilizer activities.
In an effort to help landowners/producers more effectively develop and implement the Pesticides
and Fertilizer section of their water quality plan, the Extension publication Agricultural Chemical
Storage and Handling (IP-41) is available at your local County Extension Offices. This publication
is one of several that make up the Kentucky Assessment System or KY.A.Syst.
For further information about the Kentucky Agriculture Water Quality Act, the sections of the Plan
and the KY.A.Syst publications that apply to your situation, contact your local:
• University of Kentucky Cooperative Extension Service County Office
• Division of Conservation
• Division of Water Regional Office
• USDA Natural Resource Conservation Service
• USDA Farm Service Agency
• Division of Forestry District Office
• Local Conservation District Office
• County Health Department
• Kentucky Farm Bureau Federation
Conversion Factors
Liquid Measure Dry Measure
3 teaspoons = 1 tablespoon = 14.8 ml 1 pound=16 ounces=454 grams
1 fluid ounce = 2 tablespoons = 29.6 ml 1 short ton = 2000 pounds = 908 kg
1 pint = 2 cups = 16 fluid ounces = 473.2 ml 1 long ton = 2240 pounds = 1017 kg
1 quart = 2 pints = 4 cups = 32 fl. oz. = 946.4 ml
1 gallon = 4 quarts = 8 pints = 16 cups =128 fl. oz = 3786 ml Linear Measure
1 gallon = 3.79 liters = 8.355 pounds 12 inches = 1 foot = 30.5 cm
1 cubic foot of water = 62.43 pounds = 7.48 gallons 36 inches = 3 feet = 1 yard = 0.9 meters
1 rod = 16.5 feet
Area Measure 1 mile = 5280 feet = 1760 yards =1.6 km
1 acre = 43,560 sq ft = 160 sq rods = 4840 sq yd = 0.4ha
The information provided in this publication is for general guidance in selection of herbicide products.
Always consult the product labels for proper application of herbicides, precautions and any restrictions.
Listing of pesticide products implies no endorsement by the University of Kentucky or its representatives.
Criticism of products not listed is neither implied nor intended.TABLE OF CONTENTS
INTRODUCTION ............................................................. 4 GRAIN SORGHUM .......................................................65
Method and Time of Herbicide Treatment .................... 4 Preemergence ............................................................. 65
Incorporation ................................................................. 4 Preplant or Preemergence ..........................................66
Cultivation ...................................................................... 4 No Tillage .................................................................... 67
Types of Herbicide Formulations .................................. 5 Postemergence ...........................................................68
Restricted Use Herbicides ............................................. 5
Environmental & Safety Precautions (WPS) ................. 5
Water Quality Statements ............................................. 5 SOYBEANS .................................................................. 70
Herbicide Classification ................................................. 6 Preplant “Burndown” Herbicides for No-Till Soybean .70
Herbicide Resistance .................................................... 6 Preplant Foliar “Burndown” plus Residual Herbicides.75
Tank Mixtures & Sequential Applications ...................... 6 Relative Response of Cover Crops and Weeds to
Herbicide Mode of Action Groups ................................. 7 Burndown Herbicides (Table) .................................81
Relative Risk of Developing Herbicide Resistance ....... 8 Guide to Weed and Crop Response to Soil
Adjuvants and Additives ................................................ 9 Applied Herbicides (Table) .....................................82
Weed Sprayers.............................................................. 9 Soil Applied Herbicides ...............................................83
Sprayer Calibration ....................................................... 9 Guide to Weed and Crop Response to
Sprayer Cleanup ........................................................... 9 Postemergence Herbicides (Table) ........................95
Nozzles ........................................................................ 10 Guide for Maximum Weed Size Labeled for
Nozzle Calibration Chart ............................................. 10 Postemergence Herbicide Applications (Table) .....96
Herbicides, Formulations and Manufacturers ............. 11 Postemergence Soybean Herbicides, Adjuvants,
Glyphosate Products ................................................... 21 Crop Growth Stage, and Rain-Free Periods ..........98
Response of Perennial Broadleaf Weeds to
CORN ........................................................................... 22 Postemergence Soybean Herbicides (Table) ......100
Precautions on Use of Herbicides Containing Atrazine Postemergence Herbicides .......................................101
and Simazine Near Ground and Surface Water .... 22 Spot Treatments ........................................................113
Crop Replanting and Volunteer Corn .......................... 23 Preharvest ................................................................. 114
Preplant “Burndown” Herbicides for No-Till Corn ........ 24
Preplant Foliar “Burndown” plus Residual Herbicides 27
Relative Response of Cover Crops and Weeds to SMALL GRAINS .........................................................115
Burndown Herbicides (Table)................................. 32 Preplant “Burndown” Herbicides for No-Till Wheat ...115
Guide to Weed and Crop Response to Soil Preplant Soil-Residual Herbicides for No-Till Wheat.116
Applied Herbicides (Table) ..................................... 33 Preemegence Herbicides for Ryegrass ....................117
Soil Applied Herbicides ............................................... 34 Guide to Weed and Crop Response to Herbicides ...118
Guide to Weed and Crop Response to Timing of Postemergence Herbicides Relative to
Postemergence Herbicides (Table) ....................... 43 Wheat Growth Stages (Figure)..............................118
Guide for Maximum Weed Size Labeled for Postemergence .........................................................119
Postemergence Corn Herbicides ........................... 44 Preharvest ................................................................. 124
Corn Growth Stages, Adjuvants, and
Rain-Free Periods (Table)....................................... 46
Response of Perennial Broadleaf Weeds to
Postemergence Corn Herbicides (Table) ............... 47 Waiting Period Before Utilizing Corn for Grazing
Postemergence Herbicides ......................................... 48 or Forage Feed .....................................................125
Preharvest or Harvest Aid .......................................... 63 Waiting Period Before Utilizing Soybeans for
Postharvest Applications ............................................. 64 Harvested Grain or Forage Feed ........................126
Crop Replanting and Rotation Guidelines ...................127
Pesticide Application Records .....................................138
Pesticide Emergency Information................................1404
2021 Weed Control Recommendations for Kentucky Grain Crops
Travis Legleiter and J.D. Green
Introduction 1) Before Planting-- preplant soil incorporated,
preplant surface applied, preplant foliar as a “burndown”
of existing vegetation, or early preplant (usually 7 to 30
The use of herbicides suggested in this publication days before planting)
is based on research at the Kentucky Agricultural 2) After Planting (before crop and weed
Experiment Station and elsewhere. We have given what we emergence) -- preemergence onto the soil surface;
believe to be the most effective herbicides, with the most 3) After Crop and Weed Emergence -- cracking
suitable rates and times of application. Use of trade or stage (at crop emergence), postemergence, directed or
brand names in this publication does not imply approval of semi-directed between the rows of taller crops on small
the product to the exclusion of others which may be of weeds, or layby before crop canopy.
similar or suitable composition. Herbicides used in no-tillage crop production
Herbicide registrations and labels are constantly generally consist of a foliar "burndown" herbicide plus a soil
being revised and changed; therefore, herbicides residual. A non-selective foliar herbicide is applied before or
recommended in this publication were registered for the at planting, but before crop emerges to kill all existing
prescribed uses when the publication was printed. If the vegetation. Soil residual herbicides provide additional weed
registration of a herbicide product listed has been canceled, control throughout the growing season.
it would no longer be recommended by the University of
Kentucky. Incorporation
Read and follow label directions carefully
before you buy, store, mix, apply, or dispose of a pesticide. Proper application of any preplant and
Follow carefully the precautions stated on the label of the incorporated herbicide is extremely important. A well-
bag or container. It is hazardous to use herbicides for prepared seedbed prior to application of the herbicide is
purposes other than those specified on the approved label. necessary to obtain thorough mixing (incorporation) of the
Use herbicides only on crops for which they are approved chemical into the soil. It is advisable to incorporate
and recommended. Use only recommended amounts. thoroughly immediately after spraying, preferably in the
Besides wasting money, using too much material may same operation. Delayed incorporation could result in poor
damage the crop and make it unsafe for food or feed. The weed control.
seizure of any raw agricultural commodity, moving in Incorporation into the top 2 to 3 inches of soil
interstate commerce, which carries a pesticide residue in following seedbed preparation is necessary to ensure
excess of the established tolerance, is authorized by the effective weed control regardless of weather conditions.
Environmental Protection Agency. Incorporation should be made using power-driven
Apply herbicides only at time specified on the label, cultivation equipment set to cut to a depth of 2 to 3 inches,
and observe the recommended intervals between the time or a tandem disc set to cut to a depth of 4 to 6 inches,
of treatment and time of planting, pasturing or harvesting operated at 4 to 6 mph. This should be followed by a spike-
the crop. Guard against possible injury to nearby tooth harrow or some other leveling tillage equipment which
susceptible crops or plants. extends beyond the ends of the disc. Incorporation to a
In general, the use of herbicides should depth below 3 inches will reduce effectiveness of the
supplement good agricultural practices which include: herbicide by one-third or more.
1) the use of high quality crop seed free of weed seed; For thorough mixing, disc in two different directions
2) proper planting methods with good seed to soil contact; (cross disc). Thorough incorporation to a depth of not more
3) high soil fertility and good crop rotation; and than 2 to 3 inches of a preplant-incorporated herbicide may
4) practices that prevent weeds from producing mature be the most important part of a management program.
seeds.
Cultivation
Method and Time of Herbicide Timely, shallow cultivation may be necessary
Treatment following herbicide treatment. When cultivating, the
cultivator should be set as shallow as possible. This will
Herbicides are generally considered to be either
prevent bringing new weed seeds from below the herbicide
soil active or foliar active. Soil active herbicides are
layer to the soil surface.
generally applied to the soil surface since they are most
If rainfall does not occur within 7 to 10 days
effective when weeds are germinating. Foliar active
following application of a preemergence herbicide, a
herbicides control weeds after they have emerged from the
shallow incorporation such as with a rotary hoe may be
soil.
necessary for maximum weed control.
Herbicides can also be applied at different times for
Cultivation following a preplant-incorporated
weed control. They are applied either before or after crop
herbicide application should also be shallow, or less than
planting. The timing of the application is dependent on: a)
one half the depth that the herbicide was incorporated.
the herbicide characteristics; b) weed(s) to be controlled;
and c) crop being grown. The following terms are often
used that refer to the time of herbicide application:5
Types of Herbicide Formulations practices. WPS requires pesticide safety training for
workers and handlers, display of safety posters, and access
Herbicides are formulated as water solutions (S), to labeling and other specific information at a central
liquids (L), emulsifiable concentrates (EC), dry flowables location. Further protection is ensured by excluding
(DF), soluable granules (SG), water dispersible granules workers from areas being treated with a pesticide, REI
(WDG), wettable powders (WP), flowables (F), or micro- (Restricted-Entry Intervals) following a pesticide
encapuslated (MT, ME),. They are usually added to water application, and proper use of PPE (Personal Protective
and applied as a spray solution. Most spray mixtures Equipment). REI's and protective clothing requirements are
require constant agitation to prevent the herbicides from listed on the pesticide label.
settling to the bottom of the tank. Granular (G) herbicides
are applied dry. Do not mix granular herbicides with Water Quality Statements
different granular pesticides or fertilizers.
The potential for contamination of surface and/or ground
Restricted Use Herbicides water has become an important consideration when
choosing herbicides. Several products have groundwater
Some herbicide products are classified as advisory statements on their label. Such statements advise
Restricted Use Pesticides because they have a higher not to apply these herbicides where the water table
potential for affecting the environment, human health, or (groundwater) is close to the surface and where the soils
animals. Herbicides currently classified as Restricted Use are very permeable (i.e. well drained soils such as sands,
appear below. Pesticide certification is required to sandy loams, or loamy sands). Refer to these statements
purchase and use these products. and observe all precautions on the label when using these
AAtrex Degree Xtra Marksman products. Listed below are examples of herbicide products
Atrazine Engenia Metal II AT with active ingredients which have been identified as
Acuron Expert Milo-Pro
Balance Flexx FeXapan Parallel Plus
seeping or leaching through soil and can enter
Anthem ATZ Firestorm Parazone groundwater.
Authority MTZ FulTime Prequel *AAtrex Dimetric Charge Panther Pro
Brawl II ATZ Gramoxone Radius *Atrazine Dual II Magnum *Parallel Plus
Breakfree Guardsman Max Simazat *Acuron *Expert Perpetuo
Breakfree ATZ Harness Xtra Tavium Alite 27 Extreme Prequel
Callisto Xtra Impact Z Trizmet II Anthem Fierce Prefix
Charger Max ATZ Keystone Volley *Anthem ATZ Fierce MTZ *Princep
Cinch ATZ Lexar EZ Volley ATZ Anthem Maxx Fierce XLT Pursuit
Callisto Xtra Lumax EZ Xtendimax Authority Assist FirstRate Python
Corvus Keystone Authority Edge Flexstar Realm Q
Current regulations require that accurate records Authority Elite *FulTime Resicore
Authority First Glory Sequence
be kept for all pesticides which include Restricted Use Authority MTZ *Guardsman Max Sharpen
Pesticides as well as those classified as General Use Authority Supreme Halex Gt *Simazat
Pesticides. An applicator must make a written record within Authority XL Harness Status
30 days after the application. Records to keep include Balance Flexx Harness MAX Sonic
product name and EPA registration number, total amount *Bicep II Magnum *Harness Xtra SureStart
Boundary Hornet WDG Surveil
applied, location, crop or site of application, size of treated *Brawl II ATZ Impact Core TopNotch
area, name and certification number of applicator or Breakfree *Impact Z TriCor
supervisor, and date of application. *Breakfree ATZ Instigate Trivence
Broadaxe XC Intimidator TripleFLEX
Environmental & Safety Callisto *Keystone Tripzin ZC
*Callisto Xtra Kyber *Trizmet II
Precautions (WPS) Canopy Laudis UltraBlazer
Charger Max *Lexar EZ Valor
Proper use of herbicides and other pesticides is *Charger Max ATZ *Lumax EZ Valor XLT
important to the safety of humans and the environment. Cinch *Marksman Verdict
Pesticide labels contain precautionary statements to inform *Cinch ATZ Matador-S Volley
Confidence *Medal II AT *Volley ATZ
people of the potential hazards and safeguards associated
*Confidence Xtra Metribuzin Warrant
with pesticides. The types of precautionary statements may Corvus OpTill Warrant Ulta
vary depending on particular product and its use. Examples *Degree Xtra Outlook Zidua
of issues that may require precautionary statements are: 1) *Manufacturers of atrazine and simazine containing products
use of protective clothing, 2) exposure to domestic animals, have developed strategies for limiting their movement to both
3) storage, 4) disposal of excess pesticides, rinsates and ground and surface water. The maximum rate of these
containers, 5) toxicity to fish and wildlife, 6) groundwater, products for early preplant, preplant incorporated, or
and 7) endangered species. To assure the pesticide is used preemergence applications depends on soil erodibility, as
in a safe manner, it is important to read and follow the label defined by the Natural Resources Conservation Service, and
directions. percent of ground covered with plant residue. A summary of
Worker Protection Standards (WPS) were the label precautions and restrictions can be found at the
established to protect pesticide handlers and agricultural beginning of the corn section in this publication.
workers. This federal EPA regulation requires that
employees are informed about pesticide use and protection6
Tank Mixtures & Sequential Herbicide Resistance
Applications In recent years herbicide resistance has become
an important issue to consider when making weed
For broad spectrum weed control, more than one
management decisions. Crops traditionally susceptible to
herbicide may be necessary. In this publication we have
some herbicides are being developed which are tolerant
included only formulations or tank mixtures registered with
(i.e. resistant) to specific herbicides. For example, soybean
the EPA by the manufacturer.
varieties and corn hybrids resistant to glyphosate products
When tank mixing two or more herbicide products
are now available to producers.
it is important to consult the product(s) label to determine if
On the other hand, herbicide resistance can occur
potential problems may occur. Often a jar test may be
and develop from natural weed populations. For example,
required to determine if the products are compatible in the
resistance of smooth pigweed to triazine type herbicides
spray tank. Some tank mixtures or herbicide combinations
(i.e. Atrazine and Princep) has been found and documented
can reduce weed control activity (i.e. they are
in some localized areas of Kentucky where corn is grown in
antagonistic); whereas, other tank mixes will increase the
consecutive years. Other states have also reported weed
weed control activity (i.e. synergistic). The potential for
resistance in field crops following the continuous use of
crop injury is sometimes increased by applying two or more
certain herbicides. The potential for weed resistance to
herbicides to the same crop.
develop increases with continuous use of herbicides that
In addition to combining herbicides, sequential
have the same mode of action (i.e. similar chemistry).
herbicide applications are used to provide season-long
Therefore, herbicide use should be monitored and
weed control. These applications may consist of an early
production practices implemented to prevent and reduce
pre-plant herbicide treatment followed by an application of
the potential for weed resistance to occur.
a soil-applied herbicide at planting or a herbicide treatment
A key to avoiding development of herbicide
before or at planting followed by a postemergence herbicide
resistant weed populations is prevention. Listed below are
application later in the season after the crop has emerged.
management strategies to consider in preventing and
When using herbicides in sequential treatments, extreme
dealing with herbicide resistant weeds.
care should be taken to keep within the recommended rates
for each herbicide. In addition, rotational crop options may • Scout fields regularly and identify weeds present.
be reduced when herbicides with similar modes of action Respond quickly to shifts in weed populations to
are applied the same crop season. restrict spread of weeds.
• Select a herbicide based on weeds present and
Herbicide Classification use a herbicide only when necessary.
• Rotate crops. Crop rotation helps disrupt weed
Herbicide mode of action can be defined as the cycles and some weed problems are more easily
mechanism whereby a herbicide interferes with plant managed in some crops than others.
metabolism or function that inhibits plant growth or leads to • Rotate herbicides. Avoid using the same
plant death. Herbicides are often classified according to herbicide or another herbicide with the same mode
their mode of action, since herbicides within the same mode of action (i.e. herbicides that inhibit the same
of action class will typically produce similar symptoms on process in target weeds) for two consecutive years
susceptible plants. The major mode of action categories in a field. It is possible for a herbicide used in one
include: ACCase inhibitors, ALS inhibitors of amino acids, crop to have the same mode of action as a different
synthetic auxins (growth regulators), photosynthesis herbicide used in another crop. For example:
inhibitors (photosystem II), EPSP synthetase enzyme Accent, Classic, Harmony Extra, Harmony SG,
inhibitors, glutamine sythetase inhibitors, pigment inhibitors Lightning, Scepter, Option, Osprey, Permit,
(carotenoid biosynthesis and 4-HPPDs), cell membrane Pursuit, Spirit, Python, Resolve, Steadfast, Stout,
disruptors (photosystem I and PPO inhibitiors), microtubule and Synchrony “STS” contain active ingredients
assembly inhibitors (root growth inhibition), and cell division with the same mode of activity in plants (i.e. these
(seedling shoot growth inhibitors). The following tables list herbicides are ALS/AHAS inhibitors).
these herbicide groups with representative examples of • Apply herbicides with different modes of action
herbicide products within each classification and general as a tank mixture or sequential application during
information on how they function to interfere with plant the same season.
growth. • Combine other weed control practices such as
cultivation with herbicide treatments where soil
erosion potential is minimized.
• Clean tillage and harvest equipment to avoid
moving weed problems from one field to the next.Herbicide Classification By Mode of Action Groups
Group Herbicide Site of Plant
CODE Herbicide Classification Examples Uptake Selectivity Translocation Symptomology
ACCase Inhibitors (lipid synthesis) Growing point rots at the
phloem mobile
1 *Aryloxyphenoxy propionates Axial XL, Assure II, Fusion, foliage grasses nodes, new leaves pull
(with sugars)
*Cyclohexanediones Select, Poast out easily
ALS Inhibitors Chlorotic new growth,
phloem mobile
(amino acid synthesis) shortened internodes,
Scepter, Pursuit, soil selected broadleaves (with sugars);
2 * Imidazolinones reddened veins on
Accent, Classic, Harmony or or grasses xylem mobile in soil
* Sulfonylureas soybeans, yellow flash in
FirstRate, Python foliage uptake
* Sulfonamides corn, bottle brush roots
Microtubule Assembly Inhibitors
grasses more than minimal Stunting and clubbed root
3 (root growth inhibitor) Prowl, Treflan soil
broadleaves transport tips
* Dinitroanalines
Synthetic Auxins (Growth Regulator) Distorted growth of new
4 • Phenoxy acids 2,4-D foliage phloem mobile
broadleaves leaves, callus growth on
• Benzoic acids dicamba [Clarity, etc] primarily (with sugars)
• Pyridine carboxylic acids Starane, Vista stems
Photosynthesis Inhibitors [PS II] Binding Site A
5 * Triazines Atrazine, Princep
* Triazinones Sencor Contact burn of existing
soil
Binding Site B broadleaves more xylem mobile leaves, chlorosis of oldest
or
6 * Benzothiadiazinones Basagran than grasses (moves with water) leaf margins of seedlings
foliage
* Nitriles Buctril if soil uptake
Binding Site C
7
* Phenylureas Lorox
EPSP Synthetase Inhibitor Chlorotic new growth to
generally phloem mobile
9 (amino acid synthesis) glyphosate [Durango, foliage death depending on rate,
non-selective (with sugars)
* Glycines Roundup, Touchdown, etc.] occassionally white flash
Glutamine Synthetase Inhibitor Chlorosis of entire plant in
10 Ignite, Liberty foliage non-selective primarily contact
(nitrogen metabolism) 4 - 5 days
Carotenoid Biosynthesis soil or grasses and selected xylem mobile Bleaching (whitening) of
13 Command
(pigment inhibitor) foliage broadleaves (moves with water) leaves
PPO Inhibitors
(cell membrane disruptors) xylem mobile (moves
foliage Contact burn of existing
* Diphenylethers Blazer, Cobra, Flexstar broadleaves more with water), acts as a
14 or leaves, chlorosis of veins
* Triazolinones Aim, Authority, Spartan than grasses contact when applied
* N-phenylphthalamides Resource, Valor soil POST if soil uptake
* Pyrimidinedione Sharpen
Cell Division Inhibitors Leafing out under-ground,
(seedling shoot growth inhibitors) Harness, Surpass, grasses more than xylem mobile wrapped leaves of
15 soil
* Chloroacetamides Warrant, Dual, Outlook, broadleaves (minimal transport) grasses, bugging
* Oxyacetamides Define, Zidua whipping
19 Auxin Transport Inhibitor diflufenzopyr [Status] foliage broadleaves phloem mobile -------
Cell Membrane Disruptors [PS I] contact Rapid water soaking of
22 foliage non-selective
* Bipyridyliums paraquat [Gramoxone] activity existing leaves
4-HPPDs Armezon, Balance, Callisto, soil or selected broadleaves xylem mobile (moves Bleaching (whitening) of
27 (28)
(pigment inhibitors) Impact, Laudis foliage or grasses with water) existing leaves
78
Relative Risk of Developing Resistance to Herbicides Based on their Mode
of Action
HIGH RISK MEDIUM RISK LOW RISK
ACCase Inhibitors [Group 1] Photosythesis Inhibitors – PS II Microtubule Assembly Inhibitors
(Lipid Synthesis) (Binding Site A) [Group 5] (Root Growth Inhibitors) [Group 3]
Achieve (tralkoxydim) AAtrex (atrazine) Prowl (pendimethalin)
Arrow (clethodim) Glory (metribuzin) Treflan (trifluralin)
Assure II (quizalofop) Milo-Pro (propazine)
Axial (pinoxaden) Metri (metribuzin) Synthetic Auxins [Group 4]
Fusilade DX (fluazifop) Princep (simazine) (Growth Regulators)
Fusion (fluazifop + fenoxaprop) Sencor (metribuzin) Banvel (dicamba)
Poast, Poast Plus (sethoxydim) Simazat (atazine + simazine) Butoxone 175 (2,4-DB)
Section, Volunteer (clethodim) (Binding Site B) [Group 6] Butyrac 200 (2,4-DB)
Select, Select MAX (clethodim) Basagran (bentazon) Clarity, Clash (dicamba)
Buctril (bromoxynil) 2,4-D [various products]
ALS Inhibitors [Group 2] Maestro (bromoxynil) DiFlexx (dicamba)
(Amino Acid Synthesis) (Binding Site C) [Group 7] Engenia (dicamba)
Accent Q (nicosulfuron) Lorox (linuron) Enlist One (2,4-D choline salt)
Accolade (flumetsulam) FeXapan (dicamba)
Audit (thifensulfuron + tribenuron) Cell Membrane Disruptors Oracle, Sterling (dicamba)
Basis (rimsulfuron + thifensulfuron) (PPO Inhibitors) [Group 14] Spitfire (dicamba + 2,4-D)
Basis Blend (rimsulfuron + thifensulfuron) Aim (carfentrazone) Vista (fluroxypyr)
Beacon (primisulfuron) Authority, Spartan (sulfentrazone) Weedmaster (dicamba + 2,4-D)
Bestow (rimsulfuron) Battle Star (fomesafen) XtendiMax (dicamba)
Canopy EX (chlorimuron + tribenuron) Cadet (fluthiacet-methyl)
Classic (chlorimuron) Cobra (lactofen) EPSP Synthetase Inhibitors
Cloak EX (chlorimuron+tribenuron) Flexstar (fomesafen) (Amino Acid Synthesis) [Group 9]
Crusher (rimsulfuron + thifensulfuron) Marvel (fluthiacet+fomesafen) Glyphosate [various products]
Everest (flucarbozone) Outflank (flumioxazin) Roundup, Touchdown (glyphosate)
Exceed (primisulfuron + prosulfuron) Panther (flumioxazin)
Express (tribenuron-methyl) Phoenix (lactofen) LOWEST RISK
Finesse (chlorsulfuron + metsulfuron) Reflex (fomesafen)
FirstRate (cloransulam) Resource (flumicloric) Glutamine Synthetase Inhibitors
FirstShot SG (thifensulforon+tribenuron) Ringside, Rumble (fomesafen) (Nitrogren Metabolism) [Group 10]
HarmonyExtra(thifensulforon+tribenuron) Rowel (flumioxazin) Cheetah (glufosinate-ammonium)
Harmony SG (thifensulfuron) Shafen, Shafen Star (fomesafen) Forfeit 280 (glufosinate-ammonium)
LeadOff (rimsulfuron + thifensulfuron) Sharpen (salflufenacil) Ignite (glufosinate-ammonium)
Osprey (mesosulfuron) Spartan Charge Interline (glufosinate-ammonium)
Panoflex (tribenuron + thifensulfuron) (sulfentrazone+carfentrazone) Liberty (glufosinate-ammonium)
Permit (halosulfuron) Stellar (lactofen + flumicloric) Surmise (glufosinate-ammonium)
PowerFlex (pyroxsulam) Top Gun (fomesafen)
Pursuit (imazethapyr) Ultra Blazer (aciflurofen) Cell Division Inhibitors [Group 15]
Python (flumetsulam) Valor, Emcompass (flumioxazin) (Seedling Shoot Growth)
Raptor (imazamox) Vida (pyraflufen) Breakfree (acetochlor)
Resolve SG (rimsulfuron) (Photosystem I) [Group 22] Harness (acetochlor)
Resolve Q (rimsulfuron + thifensulfuron) Firestorm (paraquat) Surpass, Topnotch (acetochlor)
Sandea (halosulfuron) Gramoxone (paraquat) Warrant (acetochlor)
Scepter (imazaquin) Helmquat (paraquat) Dual, Parallel (metolachlor)
Solida (rimsulfron) Dual II Magnum (S-metolachlor)
Spirit (prosulfuron + primisulfuron) Carotenoid Biosynthesis Medal II (S-metolachlor)
Steadfast Q (rimsulfuron + nicosulfuron) (Pigment Inhibiitor) [Group 13] Outlook, Establish (dimethenamid-P)
Synchrony (chlorimuron+ thifensulfuron) Command (clomazone) Define (flufenacet)
Zidua (pyroxasulfone)
4-HPPDs
(Pigment Inhibiitor) [Group 27 (28)]
Armezon (topramezone)
Balance (isoxaflutole)
Bellum (mesotrione)
Callisto (meostrione)
Impact (topramezone)
Laudis (tembotrione)9
Adjuvants and Additives Sprayer Calibration
To be sure of applying the right amount of material
An adjuvant is any substance included in the
per acre, it is necessary to know how much liquid the
herbicide formulation which enhances the effectiveness of
sprayer is delivering per acre at a given speed and
the herbicide. Additives include adjuvants or other
pressure. The following is a fast, simple method of
substances added to the spray mixture which may result in
calibrating a sprayer for broadcast application.
increased or decreased effectiveness of the spray mixture
or for improving application. Products typically
Ounce Calibration Method:
recommended for use with herbicides contain 80 to 90% of
1) Measure the correct distance in the field shown in
the active agent. Additives include such substances as:
the following table. Select the appropriate distance
1) Emulsifier—a substance which promotes the
for your nozzle or row spacing.
suspension of one liquid or another
2) In the field to be sprayed, note the time in seconds
2) Surfactant—a material which favors or improves
spent to drive the measured distance at the desired
the emulsifying, dispersing, spreading, wetting or
throttle setting (speed).
other surface modifying properties of liquids
3) Catch the nozzle discharge for the noted time
3) Oil Concentrate—a blend of non-phytotoxic crop
(#2 above) in a measuring cup or other container
oils, surfactants and emulsifiers
graduated in ounces.
4) Wetting Agent—a substance that reduces
4) The total discharge per row or nozzle spacing in
interfacial tensions and causes spray solutions or
ounces is equal to the gallons per acre applied.
suspensions to make better contact with treated
5) Repeat for each nozzle or nozzle group to ensure
surfaces.
equal distribution.
5) Nitrogen Fertilizers—an ammonium containing
fertilizer that enhances the uptake of certain post-
SPRAYER CALIBRATION (Distance)
emergence herbicides inside the cell wall (eg. 28%
or 32% Urea Ammonium Nitrate or Ammonium
Nozzle Spacing Distance to Catch
Sulfate)
(inches) Discharge (feet)
6) Drift Control Agent—a substance added to the
40 102
spray solution to reduce the potential for off-site
38 107
movement of spray particles.
36 113
Weed Sprayers 34
32
120
127
Even distribution of herbicides at the proper rate is 30 136
essential for good weed control. A small variation in the rate 28 146
of application of some herbicides may result in failure to kill 26 157
weeds or may cause injury to the crop. For spray 24 170
applications of herbicides in farm crops, the low pressure 22 185
sprayer (15 to 50 pounds per square inch pressure) is most 20 204
suitable either for broadcast or band spraying. Hand 18 227
sprayers of 3 or 4-gallon capacity are suitable for small 16 255
areas and for spot spraying. 14 291
A good field sprayer should have: Sprayer Cleanup
1) a pump that is easily replaced, resistant to wear and Ideally spray equipment should be cleaned in the
chemicals, and that has a capacity of 8 to 15 gallons field after the spray job has been completed. Do not clean
per minute; spray equipment in areas where rinse water will
2) a boom equipped with nozzles with replaceable tips, contaminate water supplies, streams, or injure susceptible
the nozzles being evenly spaced on the bottom for crops.
broadcast spraying; Flushing of spray equipment with water will be
3) 50-mesh screens for suction line and nozzles, and a sufficient for removing potentially harmful amounts of many
gauge that measures pressure accurately from 10 to pesticides. However, there are certain groups of pesticides
100 pounds per square inch; and such as a plant growth-regulator, sulfonylurea herbicides
4) a mechanical or jet agitator to keep the spray well and organophosphate insecticides that may require special
mixed and prevent the herbicide from settling to the attention in cleaning equipment. Special attention to clean
bottom of the tank. out procedures can be critically important when switching
applications between crops to help avoid significant crop
For row-band spraying, use an even, flat fan nozzle injury. As a rule, a sprayer that has been used to apply 2,4-
such as a Tee Jet® 8003-E or similar nozzle type for D, dicamba, or other growth regulator type herbicides
mounting back of each planter press-wheel. should not be used in treating tobacco or other susceptible
crops.10
Some pesticide labels provide specific information To make a cleaning solution add one of following to
on cleaning spray equipment; therefore, consult the label for each 50 gallons of water:
guidelines. If specific guidelines are not indicated on the a) 2 quarts of household ammonia, or
label the following procedure is generally recommended: b) 4 pounds of trisodium phosphate cleaner.
1. Fill the tank at least one-half full with fresh water. 3. Add more water and rinse the system again by using
Flush tanks, lines, booms, and nozzles for at least 5 a combination of agitation and spraying. Remove and
minutes using a combination of agitation and spraying. clean nozzles, screens, and strainers in a bucket of
Rinsate from this procedure is best sprayed onto cleaning agent and water. Use safety precautions for
cropland to avoid accumulation of pesticide- the agrichemicals and cleaning products used.
contaminated rinsate at one site. Thoroughly rinse the 4. Make a final rinse and flush the system again with
inside surfaces of the tank. Pay particular attention to clean water.
the surfaces around the tank fill access and tank
plumbing fixtures. The use of a 360-degree nozzle or Nozzles
other special rinsing nozzles installed permanently to
the spray system can help automate this procedure. Many types of nozzles are available for use. Each type
2. Fill the tank again with fresh water and add one of the provides different patterns, flow rates, spray angles, and
following cleaning solutions or a commercially droplet sizes. The following chart is meant as an aid in
available tank cleaner. Agitate the solution for 15 sprayer calibration and are presented courtesy of Spraying
minutes and operate the spray booms long enough to Systems Co. of Wheaton, Illinois. Though the TeeJet®
ensure that all nozzles and boom lines are filled with brand is popular in Kentucky, similar nozzles from other
the cleaning solution. Let the solution stay in the manufacturers are perfectly acceptable.
system for several hours, preferably overnight. When
emptying the tank, spray the cleaning solution onto an
area suitable for the rinsate solution.
TIP NO. GALLONS PER ACRE GALLONS PER ACRE
(Strainer Screen Size) Liquid Capacity Capacity 20" SPACING 30" SPACING
SPACING
80º 110º Pressure 1 Nozzle 1 Nozzle 5 6 7 8 5 6 7 8
SERIES SERIES in PSI in GPM in oz./min. MPH MPH MPH MPH MPH MPH MPH MPH
30 .09 11 5.1 4.3 3.7 3.2 3.4 2.9 2.5 2.1
35 .09 12 5.6 4.6 4.0 3.5 3.7 3.1 2.6 2.3
8001VS 11001VS
40 .10 13 5.9 5.0 4.2 3.7 4.0 3.3 2.8 2.5
(100 Mesh) (100 Mesh) SPRAY
45 .11 14 6.3 5.3 4.5 3.9 4.2 3.5 3.0 2.6
60 .12 15 7.3 6.1 5.2 4.6 4.9 4.0 3.5 3.0 HEIGHT*
30 .13 17 7.7 6.4 5.5 4.8 5.1 4.3 3.7 3.2
35 .14 18 8.3 6.9 6.0 5.2 5.6 4.6 4.0 3.5
80015VS 110015VS
40 .15 19 8.9 7.4 6.4 5.6 5.9 5.0 4.2 3.7
(100 Mesh) (100 Mesh) *Adjust spray height in the field to overlap
45 .16 20 9.5 7.9 6.8 5.9 6.3 5.3 4.5 3.9
60 .18 23 10.9 9.1 7.8 6.8 7.3 6.1 5.2 4.6 approximately 30% of each edge of pattern.
30 .17 22 10.3 8.6 7.4 6.4 6.9 5.7 4.9 4.3
35 .19 24 11.1 9.3 7.9 6.9 7.4 6.2 5.3 4.6
8002VS 11002VS
40 .20 26 11.9 9.9 8.5 7.4 7.9 6.6 5.7 5.0
(50 Mesh) (50 Mesh)
45 .21 27 12.6 10.5 9.0 7.9 8.4 7.0 6.0 5.3
SUGGESTED MINIMUM
60 .25 32 14.6 12.1 10.4 9.1 9.7 8.1 6.9 6.1
SPRAY HEIGHT
30 .26 33 15.4 12.9 11.0 9.7 10.3 8.6 7.4 6.4
SPRAY SPRAY HEIGHT
35 .28 36 16.7 13.9 11.9 10.4 11.1 9.3 7.9 6.9
8003VS 11003VS ANGLE 20" SPACING
40 .30 38 17.8 14.9 12.7 11.1 11.9 9.9 8.5 7.4
(50 Mesh) (50 Mesh)
45 .32 41 18.9 15.8 13.5 11.8 12.6 10.5 9.0 7.9 80º 17-19"
60 .37 47 22 18.2 15.6 13.6 14.6 12.1 10.4 9.1 110º 10-12"
30 .35 45 21 17.2 14.7 12.9 13.7 11.4 9.8 8.6
35 .37 47 22 18.5 15.9 13.9 14.8 12.3 10.6 9.3
8004VS 11004VS
40 .40 51 24 19.8 17.0 14.9 15.8 13.2 11.3 9.9
(50 Mesh) (50 Mesh)
45 .42 54 25 21 18.0 15.8 16.8 14.0 12.0 10.5 Flat Fan Spray Tips
60 .49 63 29 24 21 18.2 19.4 16.2 13.9 12.1
30 .43 55 26 21 18.4 16.1 17.2 14.3 12.3 10.7 8002VS Stainless Steel with VisiFlo
8005VS 11005VS
35 .47 60 28 23 19.8 17.4 18.5 15.4 13.2 11.6 color coding
40 .50 64 30 25 21 18.6 19.8 16.5 14.1 12.4
(50 Mesh) (50 Mesh)
45 .53 68 32 26 23 19.7 21 17.5 15.0 13.1 8002-HSS Hardened Stainless Steel
60 .61 78 36 30 26 23 24 20 17.3 15.2
30 .52 67 31 26 22 19.3 21 17.2 14.7 12.9 8002-SS Stainless Steel
35 .56 72 33 28 24 21 22 18.5 15.9 13.9
8006VS 11006VS
40 .60 77 36 30 25 22 24 19.8 17.0 14.9 8002 Brass
(50 Mesh) (50 Mesh)
45 .64 82 38 32 27 24 25 21 18.0 15.8
60 .74 95 44 36 31 27 29 24 21 18.2
30 .69 88 41 34 29 26 27 23 19.6 17.2
35 .75 96 44 37 32 28 30 25 21 18.5
8008VS 11008VS
40 .80 102 48 40 34 30 32 26 23 19.8
(50 Mesh) (50 Mesh)
45 .85 109 50 42 36 32 34 28 24 21
60 .98 125 58 49 42 36 39 32 28 24
Tee JetTM is a registered trademark of Spraying Systems Co. of Wheaton, Illinois.11
Herbicides, Formulations, Manufacturers, and Crops
Trade Name* MOA Group Active Ingredient Manufacturer Crops**
AAtrex 4WDL corn (field, popcorn),
Group 5 atrazine Syngenta
90 WDG grain sorghum
Abundit Edge glyphosate corn (field, popcorn, sweet),
Group 9 Corteva
[4.5 lb ae/gal] (isopropylamine salt) soybean
nicosulfuron (54.5%)+
Accent Q Group 2 Corteva corn (field, popcorn, sweet)
isoxadifen (safener)
corn (field, popcorn), soybean,
Acumen 3.3EC Group 3 pendimethalin Tenkoz
tobacco
S-metolachlor (2.14 lb) +
Group 15
atrazine (1.0 lb) +
Group 5
Acuron mesotrione (0.24 lb) + Syngenta corn (field, popcorn, sweet)
Group 27
bicyclopyrone (0.06 lb) +
Group 27
benoxacor (safener)
S-metolachlor (2.86 lb) +
Group 15
mesotrione (0.32 lb) +
Acuron Flexi Group 27 Syngenta corn (field, popcorn, sweet)
bicyclopyrone (0.08 lb) +
Group 27
benoxacor (safener)
Group 2 thifensulfuron (5%) +
Afforia 50.8 WDG Group 2 tribenuron (5%) + Corteva soybean
Group 14 flumioxazin (40.8%)
corn (field, popcorn), grain
Aim 2EC Group 14 carfentrazone FMC
sorghum, soybean, wheat, barley
GT27 soybean (isoxaflutole-
Alite 27 (4SC) Group 27 isoxaflutole (4 lb) BASF
resistant)
Andros Group 14 fomesafen (1.88 lb) Rotam N America soybean
Group 14 fluthiacet-methyl (0.063 lb) + corn (field, popcorn, sweet),
Anthem (2.15L) FMC
Group 15 pyroxasulfone (2.087 lb) soybean
Group 5 atrazine (4.006 lb) +
Anthem ATZ (4.5S) Group 14 fluthiacet-methyl (0.014 lb) + FMC corn (field, popcorn, sweet)
Group 15 pyroxasulfone (0.485 lb)
Anthem Flex (4SE) Group 14 carfentrazone (0.267 lb) +
FMC wheat
Group 15 pyroxasulfone (3.733 lb)
Anthem MAXX Group 14 fluthiacet-methyl (0.126 lb) + corn (field, popcorn, sweet),
FMC
(4.3SC) Group 15 pyroxasulfone (4.174 lb) soybean
Armezon 2.8SC Group 27 topramezone BASF corn (field, popcorn, sweet)
Armezon PRO Group 15 dimethenamid-P (5.25 lb) +
(6.25L) BASF corn (field, popcorn, sweet)
Group 27 topramezone (0.1 lb)
Arrow 2EC Group 1 clethodim ADAMA soybean
Assure II 0.88E Group 1 quizalofop P-ethyl AMVAC soybean
Atrazine 4 WDL corn (field, popcorn),
Group 5 atrazine (various)
90 WDG grain sorghum
Authority Assist 4L Group 14 sulfentrazone (3.33 lb) +
FMC soybean
Group 2 imazethapyr (0.67 lb)
Authority Edge Group 14 sulfentrazone (2.73 lb) +
FMC soybean
4.25 SC Group 15 pyroxasulfone (1.52 lb)
Authority Elite 7L Group 14 sulfentrazone (0.7 lb) +
FMC soybean
Group 15 S-metolachlor (6.3 lb)
Authority First Group 14 sulfentrazone (62.1%) +
(70DF) FMC soybean
Group 2 cloransulam (7.9%)
Authority Maxx Group 14 sulfentrazone (62.12%) +
FMC soybean
(60DF) Group 2 chlorimuron (3.88%)
Authority MTZ Group 14 sulfentrazone (18%) +
FMC soybean
45DF Group 5 metribuzin (27%)12
Herbicides, Formulations, Manufacturers, and Crops
Trade Name* MOA Group Active Ingredient Manufacturer Crops**
Authority Supreme Group 14 sulfentrazone (2.08 lb) +
FMC soybean
Group 15 pyroxysulfone (2.08 lb)
Authority XL 70DF Group 14 sulfentrazone (62.22%) +
FMC soybean
Group 2 chlorimuron (7.78%)
Axial Bold Group 1 pinoxaden (0.457 lb) +
Syngenta wheat, barley
Group 1 fenoxaprop-p-ethyl (0.228 lb)
Axiom 68DF Group 15 flufenacet (54.4%) + Bayer
corn (field), soybean, wheat
Group 5 metribuzin (13.6%) CropScience
Balance Flexx isoxaflutole (2 lb) + Bayer
Group 27(28) corn (field)
cyprosulfamide (safener) CropScience
Basis 75 WDG Group 2 rimsulfuron (50%) +
Corteva corn (field)
Group 2 thifensulfuron (25%)
Basis Blend Group 2 rimsulfuron (20%) +
Corteva corn (field)
Group 2 thifensulfuron (10%)
Battle Star Group 14 fomesafen (1.88 lb) Albaugh soybean
Battle Star GT Group 14 fomesafen (0.54 lb) +
Albaugh soybean [glyphosate-tolerant]
Group 9 glyphosate (2.26 lb)
Beacon 75DF Group 2 primisulfuron Syngenta corn (field, popcorn)
corn (field, popcorn, sweet corn),
Bellum 4SC Group 27 mesotrione (4 lb) Rotam
sorghum (grain, sweet)
Bicep II Magnum Group 15 S-metolachlor (2.4 lb) +
5.5L Group 5 atrazine (3.1 lb) + Syngenta corn (all types), grain sorghum
benoxacor (safener)
Boundary 6.5EC Group 15 S-metolachlor (5.25 lb) +
metribuzin (1.25 lb) Syngenta soybean
Group 5
Brawl II 7.64EC S-metolachlor (2.4 lb) + corn (all types), soybean,
Group 15 Tenkoz
benoxacor (safener) grain & forage sorghum
Brawl II ATZ 5.5L S-metolachlor (2.4 lb) +
Group 15
atrazine (3.1 lb) + Tenkoz corn (all types), grain sorghum
Group 5
benoxacor (safener)
Breakfree NXT 7E acetochlor (7 lb)+
Group 15 Corteva corn (field, popcorn)
dichlormid (safener)
Breakfree NXT ATZ acetochlor (3.1 lb) +
5.6L Group 15
atrazine (2.5 lb) + Corteva corn (field, popcorn)
Group 5
dichlormid (safener)
corn (field, popcorn), grain
Broclean Group 6 bromoxynil (2lb) Loveland
sorghum, wheat, barley, oats
BroadAxe XC Group 14 sulfentrazone (0.7 lb) +
Syngenta soybean
Group 15 S-metolachlor (6.3 lb)
Buccaneer 4S or
glyphosate corn (field, popcorn), grain
Buccaneer Plus Group 9 Tenkoz
(isopropylamine salt) sorghum, soybean, wheat, barley
[3 lb ae/gal]
Buccaneer 5 glyphosate corn (field, popcorn), grain
Group 9 Tenkoz
[3.75 lb ae/gal] (isopropylamine salt) sorghum, soybean, wheat, barley
Cadet 0.91EC Group 14 fluthiacet-methyl (0.91 lb) FMC corn (field, popcorn), soybean
Callisto 4SC mesotrione (4 lb) corn (field, popcorn, sweet corn),
Group 27 Syngenta
sorghum (grain, sweet)
Callisto GT (4.18L) Group 9 glyphosate (3.8 lb) +
Syngenta corn (field) [glyphosate-tolerant]
Group 27(28) mesotrione (0.38 lb)
Callisto Xtra 3.7L Group 5 atrazine (3.2 lb) + corn (field, yellow popcorn, silage,
Syngenta
Group 27(28) mesotrione (0.5 lb) sweet corn)
Canopy 75WDG Group 2 chlorimuron (10.7 %) +
Corteva Soybean
Group 5 metriburin (64.3%)13
Herbicides, Formulations, Manufacturers, and Crops
Trade Name* MOA Group Active Ingredient Manufacturer Crops**
Canopy Blend Group 2 chlorimuron (8.3 %) +
Corteva soybean
Group 5 metribuzin (50%)
Canopy EX Group 2 chlorimuron (22.7 %) +
Corteva Soybean
29.5 WDG Group 2 tribenuron (6.8%)
thiencarbozone (0.57 lb) +
Group 2
Capreno 3.45SC tembotrione (2.88 lb) + Bayer CropScience corn (field, popcorn, sweet corn)
Group 27(28)
isoxadifen (safener)
Charger Max S-metolachlor + corn (all types), grain sorghum,
Group 15 Winfield United
7.64EC (seed safener) soybean
Charger Max ATZ S-metolachlor (2.4 lb) +
Group 15
5.5 L atrazine (3.1 lb) + Winfield United corn (all types), grain sorghum
Group 5
(seed safener)
Cheetah glufosinate-ammon. (2.34 lb) corn (field), soybean [glufosinate-
Group 10 Nufarm
tolerant]
Cheetah Max Group 10 glufosinate-ammonium (2 lb)+
Nufarm soybean [glufosinate-tolerant]
Group 14 fomesafen (1 lb)
Cinch 7.64EC S-metolachlor + corn (all types), grain sorghum,
Group 15 Corteva
benoxacor (safener) soybean
Cinch ATZ 5.5L S-metolachlor (2.4 lb) +
Group 15
atrazine (3.1 lb) + Corteva corn (all types), grain sorghum
Group 5
benoxacor (safener)
Cinco glyphosate corn (field, popcorn), grain
Group 9 Loveland Products
[4 lb ae/gal] (isopropylamine salt) sorghum, soybean, wheat, barley
dicamba corn (field, popcorn), grain
Clarity 4S Group 4 BASF
(diglycolamine salt) sorghum, wheat, barley
dicamba corn, grain sorghum, wheat, barley,
Clash Group 4 Nufarm
(diglycolamine salt) oats
Classic 25DF Group 2 chlorimuron AMVAC soybean
Cloak 75WDG Group 2 chlorimuron (10.7%0 +
Nufarm soybean
Group 5 metribuzin (64.3%)
Cloak EX Group 2 chlorimuron (22.7% +
Nufarm soybean
29.5WDG Group 2 tribenuron (6.8%)
Cobra 2EC Group 14 lactofen Valent soybean
Command 3ME Group 13 clomazone FMC soybean, tobacco
Confidence 7E Group 15 acetochlor + (safener) Winfield United corn (field, popcorn)
Confidence Xtra Group 15 acetochlor (3.1 lb) +
Winfield United corn (field, popcorn)
5.6L Group 5 atrazine (2.5 lb) + (safener)
Cornerstone Plus glyphosate corn (field, popcorn), grain
Group 9 Winfield United
[3 lb ae/gal] (isopropylamine salt) sorghum, soybean, wheat, barley
Cornerstone 5 Plus glyphosate corn (field, popcorn), grain
Group 9 Winfield United
[4 lb ae/gal] (isopropylamine salt) sorghum, soybean, wheat, barley
thiencarbozone (0.75 lb) +
Group 2 Bayer
Corvus 2.63L isoxaflutole (1.88 lb) + corn (field)
Group 27(28) CropScience
safener
Coyote S-metolachlor (3.34 lb) +
Group 15 corn (field, sweet, yellow popcorn),
mesotrione (0.33 lb) + UPL
Group 27 grain sorghum
benoxacor (safener)
corn (field, popcorn), grain
Credit 5.4 Extra Group 9 glyphosate [IPA salt] (4.0 lb) Nufarm
sorghum, soybean, wheat, barley
Credit Xtreme glyphosate
corn (field, popcorn), grain
[4.5 lb ae/gal] Group 9 [isopropylamine salt (2.5 lb)+ Nufarm
sorghum, soybean, wheat, barley
potassium salt (2.0 lb)]14
Herbicides, Formulations, Manufacturers, and Crops
Trade Name* MOA Group Active Ingredient Manufacturer Crops**
Crusher 50WDG Group 2 rimsulfuron (25%) +
FMC corn (field), soybean
Group 2 thifensulfuron-methyl (25%)
2,4-D corn, grain sorghum, soybean,
Group 4 2,4-D (various)
[several forms] wheat, barley
Degree Xtra acetochlor (2.7 lb) +
Group 15 Bayer corn (field, popcorn), grain
4.04CS atrazine (1.34 lb) +
Group 5 CropScience sorghum
MON13900 (safener)
corn, grain sorghum, wheat, barley,
Diablo 4S Group 4 dicamba (dimethylamine salt) Nufarm
oats
Group 4 dicamba (diglycolamine salt)+ Bayer
DiFlexx 4SC corn (field, silage, popcorn)
cyprosulfamide (safener) CropScience
dicamba (1.26 lb ae) +
Group 4 Bayer
DiFlexx Duo 2.13SC tembotrione (0.27 lb) corn (field, silage, popcorn)
Group 27 CropScience
cyprosulfamide (safener)
Dimetric Charge Group 5 metribuzin (3 lb)
Winfield United soybean
3.67 L Group 14 flumioxazin (0.67)
Dual II Magnum S-metolachlor + corn (all types), grain sorghum,
Group 15 Syngenta
7.64EC benoxacor (safener) soybean
Duramax glyphosate corn (field, popcorn), grain
Group 9 Corteva
[4 lb ae/gal] (dimethylamine salt) sorghum, soybean, wheat, barley
Durango DMA glyphosate corn (field, popcorn), grain
Group 9 Corteva
[4 lb ae/gal] (dimethylamine salt) sorghum, soybean, wheat, barley
corn, sorghum, soybean, wheat,
Elevore Group 4 halauxifen-methyl (0.572 lb) Corteva
barley
Encompass 51DG Group 14 flumioxazin Tenkoz soybean
Engenia Group 4 Dicamba (BAPMA) (5 lb ae) BASF corn, soybean [dicamba-tolerant]
Group 4 2,4-D [choline salt] (1.6 lb) +
Enlist Duo Corteva corn, soybean [Enlist]
Group 9 glyphosate [DMA salt] (1.7 lb)
Enlist One Group 4 2,4-D [choline salt] (3.8 lb) Corteva corn, soybean [Enlist]
Group 2 chlorimuron (9.2%) +
Envive 41.3DG Group 2 thifensulfuron (2.9%) + Corteva soybean
Group 14 flumioxazin (29.2%)
corn (field, popcorn),
Establish 6E Group 15 dimethenamid-P Tenkoz
grain sorghum, soybean
Expert 4.88L Group 15 S-metolachlor (1.74 lb) + corn (field corn, Roundup Ready
Group 5 atrazine (2.14 lb) + Syngenta hybrids, popcorn, sweet corn),
Group 9 glyphosate [IPA salt] (1.0 lb) grain sorghum, forage sorghum
corn (field, popcorn, sweet corn),
Explorer 4SC Group 27 mesotrione (4 lb) Syngenta
sorghum (grain, sweet)
Express (TotalSol) corn (field), grain sorghum,
Group 2 tribenuron-methyl FMC
50 DF soybean, wheat, barley, fall fallow
Extreme 2.17L Group 2 imazethapyr (0.17 lb) + BASF
soybean
Group 9 glyphosate [IPA salt] (2 lb)
FeXapan
Group 4 dicamba [DGA salt] (2.9 lb ae) Corteva corn, soybean [dicamba-tolerant]
Plus VaporGrip
Group 14 flumioxazin (33.5%) +
Fierce 76WDG Valent corn (field), soybean, wheat
Group 15 pyroxasulfone (42.5%)
Group 14 flumioxazin (0.5 lb) +
Fierce MTZ Group 15 pyroxasulfone (0.64) + Valent soybean
Group 5 metribuzin (1.5 lb)
Group 14 flumioxazin (1.34 lb) +
Fierce EZ Valent corn (field), soybean
Group 15 pyroxasulfone (1.7 lb)15
Herbicides, Formulations, Manufacturers, and Crops
Trade Name* MOA Group Active Ingredient Manufacturer Crops**
Group 2 chlorimuron (6.67%)
Fierce XLT Group 14 flumioxazin (24.57 %) Valent soybean
Group 15 pyroxasulfone (31.7%)
Finesse Cereal Group 2 chlorsulfuron (62.5%) +
FMC wheat, barley, triticale
and Fallow Group 2 metsulfuron-methyl (12.5%)
FirstRate 84WDG Group 2 cloransulam AMVAC soybean
FirstShot SG Group 2 thifensulfuron (25%) + corn (field), grain sorghum,
FMC
(TotalSol) Group 2 tribenuron (25%) soybean, wheat, barley, fallow
Flexstar 1.88L Group 14 fomesafen Syngenta soybean
Flexstar GT 3.5 Group 14 fomesafen (0.56 lb) +
Syngenta soybean [glyphosate-tolerant]
[2.82S] Group 9 glyphosate (2.26 lb)
glufosinate-ammonium corn (field), soybean
Forfeit 280SL Group 10 (2.34 lb) Loveland
[glufosinate-tolerant]
FulTime NXT [4SE] Group 15 acetochlor (2.7 lb) +
Corteva corn (field, popcorn, sweet)
Group 5 atrazine (1.34 lb)
Fusilade DX 2E Group 1 fluazifop-P-butyl (2 lb) Syngenta soybean
Fusion 2.56EC Group 1 fluazifop-P-butyl (2 lb) +
Syngenta soybean
Group 1 fenoxaprop-P-ethyl (0.56 lb)
Glory 75DF Corn (field), soybean,
Group 5 metribuzin (75%) ADAMA
Glory 4L wheat (tolerant varieties)
Glyphogan glyphosate corn (field, popcorn), grain
Group 9 ADAMA
[3 lb ae/gal] (isopropylamine salt) sorghum, soybean, wheat, barley
Gly Star Plus glyphosate corn (field, popcorn),grain
Group 9 Albaugh
[3 lb ae/gal] (isopropylamine salt) sorghum, soybean, wheat, barley
Gramoxone SL 2.0 paraquat (2 lb) or corn (field, popcorn), grain
Group 22 Syngenta
Gramoxone SL 3.0 paraquat (3 lb) sorghum, soybean, wheat, barley
Grapple Group 2 rimsulfuron (25%) NuFarm corn (field)
GuardsmanMax 5E Group 15 dimethenamid-P (1.7 lb) + corn (field, popcorn),
BASF
Group 5 atrazine (3.3 lb) grain sorghum
Group 15 S-metholachlor (2.09) +
Halex GT [4.39EC] Group 9 glyphosate (2.09) + Syngenta corn (Glyphosate-Tolerant hybrids)
Group 27(28) mesotrione (0.209)
Harmony Extra SG Group 2 thifensulfuron (33.33%) + wheat, barley, oats, corn(field),
FMC
(TotalSol) 50SG Group 2 tribenuron (16.67%) grain sorghum, soybean, fallow
Harmony SG wheat, barley, oats, corn (field),
Group 2 thifensulfuron (50%) FMC
(TotalSol) 50SG grain sorghum, soybean, fallow
Harness 7E acetochlor + Bayer
Group 15 corn (field, popcorn)
furilazole (safener) CropScience
Harness Xtra 5.6L acetochlor (3.1 lb) +
Group 15 Bayer
atrazine (2.5 lb) + corn (field, popcorn)
Group 5 CropScience
furilazole (safener)
corn (field, popcorn), grain
Helmquat 3SL Group 22 paraquat HELM AGRO
sorghum, soybean, wheat, barley
Honcho K6 glyphosate Bayer corn (field, popcorn), grain
Group 9
[4.5 lb ae/gal] (isopropylamine salt) CropScience sorghum, soybean, wheat, barley
Hornet 68.5WDG Group 2 flumetsulam (18.5%) +
AMVAC corn (field)
Group 4 clopyralid (50%)
Hoss Ultra glyphosate corn (field, popcorn), grain
Group 9 Helena
[3 lb ae/gal] (isopropylamine salt) sorghum, soybean, wheat, barley
Group 27 pyrasulfotole (0.31 lb) +
Huskie Bayer CropScience wheat, barley, grain sorghum
Group 6 bromoxynil (1.75 lb)
Impact 2.8SC Group 27 topramezone AMVAC corn (field, popcorn, sweet)16
Herbicides, Formulations, Manufacturers, and Crops
Trade Name* MOA Group Active Ingredient Manufacturer Crops**
Impact Core 7.15EC Group 27 topramezone (0.071 lb) +
AMVAC corn (field, popcorn)
Group 15 acetochlor (7.08 lb)
Impact Z 4.26S Group 27 topramezone (0.26 lb) +
AMVAC corn (field, popcorn, sweet)
Group 5 atrazine (4 lb)
Incinerate 4SC mesotrione (4 lb) corn (field, popcorn, sweet corn),
Group 27 WinField United
sorghum (grain, sweet)
Group 2 rimsulfuron (4.17%) +
Instigate 45.8WDG Corteva corn (field)
Group 27 mesotrione (41.67%)
Intensity 2EC Group 1 clethodim Loveland soybean
IntensityOne clethodim
Group 1 Loveland soybean, corn (field)
0.97EC
glufosinate (2.34 lb) corn (field), soybean [glufosinate-
Interline (SL) Group 10 UPL
tolerant]
glufosinate (1.07 lb) +
Intermoc Group 10 UPL soybean [glufosinate-tolerant]
S-metolachlor (2.5 lb)
Intimidator Group 15 S-metolachlor (3.39 lb) +
Group 5 metribuzin (0.75 lb) + Loveland soybean
Group 14 fomesafen (0.67 lb)
Keystone NXT Group 15 acetochlor (3.1 lb) +
5.6SE Corteva corn (field, popcorn, sweet)
Group 5 atrazine (2.5 lb)
Kyber Group 14 flumioxazin (0.5 lb) +
Group 5 metribuzin (1.5 lb) + Corteva corn (field), soybean
Group 15 pyroxasulfone (0.64 lb)
Laudis Group 27(28) tembotrione (3.5 lb) Bayer CropScience corn (field, popcorn, sweet)
LeadOff 33.4WDG Group 2 rimsulfuron (16.7%) +
Corteva corn (field), soybean
Group 2 thifensulfuron-methyl (16.7%)
Group 15 S-metolachlor (5.25 lb) +
Ledger 6.5EC metribuzin (1.25 lb) Tenkoz soybean
Group 5
S-metolachlor (1.74 lb) +
Group 15
Lexar EZ mesotrione (0.224 lb) + corn (field, popcorn, sweet), grain
Group 27(28) Syngenta
atrazine (1.74 lb) + sorghum
Group 5
benoxacor (safener)
glufosinate-ammonium corn (field), soybean [glufosinate-
Liberty 280SL Group 10 BASF
(2.34 lb) tolerant]
Linex 4L Group 7 linuron (4 lb) Tessenderlo Kerley soybean
S-metolachlor (2.49 lb) +
Group 15
Lumax EZ mesotrione (0.249 lb) + corn (field, popcorn, sweet),
Group 27(28) Syngenta
atrazine (0.935 lb) + grain sorghum
Group 5
benoxacor (safener)
Mad Dog or
glyphosate corn (field, popcorn), grain
Mad Dog Plus Group 9 Loveland
(isopropylamine salt) sorghum, soybean, wheat, barley
[3 lb ae/gal]
Maestro 2EC corn (field, popcorn), sorghum,
Group 6 bromoxynil Nufarm
Maestro 4EC wheat, barley, oats, rye, triticale
Group 4 dicamba (1.1 lb) +
Marksman 3.2S BASF corn (field, popcorn)
Group 5 atrazine (2.1 lb)
Marvel 3L Group 14 fluthiacet (0.117 lb) +
FMC soybean
Group 14 fomesafen (2.883 lb)
Group 15 S-metolachlor (3.38 lb) +
Matador-S Group 5 metribuzin (0.75 lb) + Loveland soybean
Group2 imazethapyr (0.17)
Mauler Group 5 metribuzin (4 lb) Valent soybean
MCPA Group 4 MCPA (various) small grainsYou can also read
