This thread is meant to be general information about herbicides commonly used to establish and maintain food plots, NWSG and tree plantings.
It contains a list that we can add too if anyone comes up with alternatives which may work better/cheaper etc.
Some herbicides are listed as RUP (restricted use pesticides) which means you must have a pesticide applicators license to purchase (not necessarily to apply them).
The most common RUP is Atrazine, which is restricted federally nationwide, while others such as Oust are restricted in just a few states. In this case, Oust could be purchased or shipped to another state to by pass the restriction.
Herbicides may kill systematically or by residual actions and may need to be applied pre-emergence, post emergence or to growing plants.
In all cases, it is critical to read the labels thoroughly before applying them. All herbicide labels are available on-line and failure to understand what your using could end up in a costly disaster!
This link will give you a rough idea of cost per gallon although often generics are much cheaper. Just make sure it is the same percentage of active ingredient.
CDMS - Labels and MSDS
is a quick source for all herbicide labels.
Approximate Herbicide Pricing - 2006
2006 North Dakota Weed Control Guide
lists most herbicides and suggested rates per acre.
2007 North Dakota Weed Control Guide
if you can't find it here...it can't be found!
2008 North Dakota Weed Control Guide
Crop Smart carries a full line of very reasonable generics herbicides and Jim will ship so check for the exact product you need and then give Jim a call to compare prices + shipping against local sources.
Jim Bolding 919-462-1375 Crop Smart LLC
Crop Smart has all types of generic herbicides including clethodim for $89 shipped
Keystone Pest Solutions carries many herbicides that a plotter would need and some in smaller quantities making it more affordable as well as online ordering. Shipping can be pricey however.
Keystone Pest Solutions
Farm Chemical Suppliers is another good source for herbicides.
Farm Chemical Suppliers
Some herbicides are classified as Restricted Use Pesticides requiring an applicators license to purchase and apply these chemicals. This list changes and varies state to state but here is a list from the EPA:
Pesticide Registration Status
Iowa Study Guide for a RUP applicator license
Search for Iowa applicators
Application for private pesticide license
Look up restrictions in Iowa here:
Iowa Pesticide Bureau
Accent is approved for corn and switchgrass primarily for controlling annual grasses but it quite expensive.
Aatrex 4L (Atrazine) is a RUP herbicide used primarily on corn, sorghum, switchgrass and in some cases conifers. It is a residual herbicide providing season long control if applied correctly.
Arrest herbicide is the exact same product as Poast...at a much higher price.
Arrest herbicide Label
Arrow (generic version of select 2 EC) 26.4% clethodim
grass selective herbicicde
Arrow 2EC label(generic version of Select grass herbicide)
Source for generic Clethodim
(Good price if you need an online source)
Arsenal - for use on conifers only and expensive at $500+ for a 2 1/2 gall jug
Assure is a grass herbicide approved for beans, peas and beets
Authority 480 is a pre-emergence herbicide for use in controlling broadleaves in peas and soybeans.
Authority 480 label
2,4-D Amine is a broadleaf herbicide which can be applied to most grasses from switchgrass to corn. DO NOT apply to crops such as clover, soybeans or peas.
Brawl (generic version of Dual II Magnum - S-Metolachlor) for use on corn, soybeans, sunflowers and concep treated sourghum
Butyrac 200 2,4-DB is safe to apply to clover, alfalfa and soybeans for broadleaf control.
Butyrac 200 online source
Butyrac 200 (2,4-DB) 2L 1 - 3 qt
Mode of action: growth regulator.
Apply to alfalfa only in spring or fall when weeds are no more than 2 to 3 inches tall, or when rosettes are no more than 2 inches across and not bolting. Weeds that emerge in the fall and overwinter in the rosette stage (mustards, field pennycress) may be more easily controlled in late fall than in spring.
Apply 1 to 2 quarts/A when weeds are less than 1 inch tall, and 2 to 3 quarts when weeds are 1 to 3 inches tall. Use the 3-quart rate for smartweed or curly dock.
Butyrac can be tank-mixed with Poast Plus or Select 2EC for control of a mixed population of grass and broadleaf weeds.
Do not harvest or graze for 30 days following application.
Basagran is a post/contact broadleaf herbicide safe for use on corn, sorghum, soybeans and peas and will control tough weeds like nutsedge.
Cadet is a post emergence broadleaf herbicide safe for both corn and soybeans and cost only $5.00 and acre!
Video on Cadet
Cadet Tech Sheet
Cadet - Tank mixed with a glyphosate or other postemergence broadleaf herbicides– 0.4 to 0.5 oz/A
Used alone or with postemergence grass herbicides – 0.6 to 0.9 oz/A
Corn – Apply from 2-leaf up to 48-inches tall
Soybeans – Apply from 1-trifoliate through full flowering
Callisto is a post emergent herbicide safe in corn and sorghum
Cinch is a generic version of Dual Magnum II (S-metolachlor)For weed control in corn, cotton, peanuts, pod crops,
potatoes, safflowers, grain or forage sorghum and
soybeans. PREPLANT INCORPORATED OR PREEMERGENCE SURFACE-APPLIED
Eastern black nightshade
robust foxtails (purple,
wild proso millet*
Clethodim 2EC 26.4% clethodim grass selective herbcide safe to kill grasses in almost all broadleaves when used with crop oil.
Clethodim (active in Select)
Rural King - Clethodim source
Crossbow® herbicide (triclopyr + 2,4-D ester) is a postemergent product that targets woody plants and brush – such as blackberries and poison oak – as well as annual and perennial broadleaves, while leaving grasses unharmed.
Crossbow® herbicide label
Drive® XLR8 (quinclorac) same as Paramount and safe foe foxtail control in switchgrass and big bluestem
Drive 75 source - quinclorac
Dual II Magnum (S-metolachlor) is a residual action herbicide that will help control weeds such as foxtail in corn, soybeans and pod crops. PREPLANT INCORPORATED OR PREEMERGENCE SURFACE-APPLIED
DUAL II Magnum herbicide provides selective weed control in:
Corn * (hybrid, silage, seed, sweet)
Dry common beans (Phaseolus vulgaris)
Snap common beans (yellow and green)
Sweet white lupins
Peas (grown for processing)
Fruit trees (bearing and non-bearing)
Second-year or older poplar stoolbeds
Second-year or older transplant or seedling stock of:
White Spruce, Norway Spruce, Black Spruce, White Pine, Jack Pine and Red Pine
Transplanted broccoli, cabbage and cauliflower
Newly planted strawberries
Dual can also be used on sorghum seed that has been "safened" making this an excellent herbicide for a milo/soybean planting or a corn/soybean planting.
Dual II MAGNUM
Dual II MAGNUM Label
Dual II MAGNUM Label includes brassicas
There are generic versions but they are NOT all created equal, so be aware and perhaps read this link before you purchase.
Are all metolachlor products created equal?
Dual Magnum II and Cinch conatin S-metolachlor while Me-Too-Lachlor II contains ONLY metolachlor and may require higher rates, so understand all of this before you make your purchase.
Generic metolachlor Source
Concep Seed Safner
is used on RR soybeans only. It contains glyphosate and Pursuit® herbicide for residual control.
Finale is a non-selective herbicide for directed spraying around trees and shrubs.
Fusilade II is used for weed control in tree plantings
Fusion is a post emergence herbicide for soybeans and cotton
Soybeans: Postemergence Herbicides - Contact
Fusion® is a flexible, broad-spectrum, post-emergence soybean herbicide which controls 27 different annual and perennial grass species in soybeans, cotton and rights-of-way.
Garlon 4 triclopyr
for control of brush and broaldleaf weeds, used for basal bark spraying and spraying cut stumps
Garlon 4 Label
Source Garlon source
Garrison is the generic form of Stinger and provides post emergence control of broadleaves in sugar beets, brassicas, corn and tree plantations.
Glyphosate (Roundup) is available under many generic labels as a “kills all” herbicide, meant to be applied to actively growing plants. It can be applied to Roundup Ready crops that are genetically altered such as RR corn and soybeans.
Adding ammonium sulfate to Roundup
(same as Poast Herbicide)
Post emergence Grass Herbicide,Active ingredient: Sethoxydim
Another Hi-Yield source
is yet another clethodim herbicide such as Select 2-EC and Arrow for post emergence control of grasses in most broadleaf crops.
Impact is a post emergence herbicide safe and effective on corn and controls a long list of both broadleaf and annual grass weeds.
More about Impact
Journey herbicide (imazapic + glyphosate) is commonly used before planting NWSG mixes and in some cases can be used for weed control around tree plantings.
Kerb 50W is a RUP for weed control in tree plantings
provides superior control of many noxious and invasive weed species, including biennial and perennial thistles, knapweeds and yellow starthistle in native grass and range grasses. Use at 4-7 oz's per acre for thistle control in prairie grasses.
Check the label before applying to CP-33 natives mixes containing forbs. Milestone is NOT safe for legumes and broadleaves but will control most types of thistles.
Me-Too-Lachlor II generic metolachlor that is not equal to Dual Magnum II but much less expensive.
Are all metolachlor products created equal?
Generic metolachlor Source
Active Ingredient: aminopyralid provides control of tough thistle problems
Milestone Tech sheet
Ornamec is an over the top grass control safe for most conifers, shrubs and trees..over 500 species!
Ornamec over the top herbicide
Oust is no longer a RUP in Iowa and is one of the premier herbicides for controlling weeds in tree plantings. Jef Hodges of TRM
will sell it in small quantities of 2 or more ounces. Email: email@example.com
I have also found this herbicide to be safe and effective for switchgrass and big blustem as well.
Oust Extra label
Oust Extra Source
The generic version of Oust is Spyder and offered by Keystone Spyder Herbicide
Outlook...is labeled for use on field corn, popcorn, seed corn, sweet corn, garlic, dry beans, peanuts, sorghum, soybeans, perennial grasses grown for seed, sugar beets, dry bulb onions, dry bulb shallots, horseradish and potatoes and tree seedlings.
Paramount (quinclorac) is approved for a number of NWSG's such as switchgrass and Big Bluestem but check the label to be certain.
Generic online source of quinclorac
Panoramic 2SL contains the active ingredient imazapic and is the generic equivalence of Plateau used for weed/grass control in establishing native grass and forbs.
PANORAMIC 2SL Label
Panoramic 2SL Source
Panoramic - 1 Quart
Pendulum® 2G herbicide is one of the most economical preventive weed control options in the ornamental nursery industry, controlling a wide range of weed species – more than 40 grassy and broadleaf weeds – at a low cost-per-acre price. Over 335 ornamental species are listed on the label
Pendulum 3.3 EC 2.5 gal Source
Pendulum 3.3 EC Source
Plateau (imazapic) is commonly used on mixed NWSG and forbs and has both contact and residual control.
Poast Plus (Sethoxydim) is used to control grasses in alfalfa and clover as well as brassicas, peas, soybeans and most trees, however we have found that Select or Arrow (Clethodim) to be more effective then Poast for controlling grasses.
BASF markets both Poast and Poast Plus and got in some trouble for deceptive marketing
You can buy and use Poast Plus but you can check the Poast label for what it's truely labeled for :roll:
Note: Poast has 18% active ingred. compared to 13% in Poast Plus
This link has a more complete list of what Poast will kill and what it is safe to use on.
Basf poast herbicide
Poast Plus Label
Poast Plus Source
Poast Plus Ebay source
is labled for:
Soybeans, CLEARFIELD® corn, edible legumes, peanuts, dry edible peas, alfalfa, dry succulent peas, lentils, chickpeas, lima beans, snap beans
Princep 4L is in the same family as Atrazine but is not a RUP herbicide. It can be used on corn, sorghum and in conjunction with Oust and/or roundup for weed control in new tree plantings. It is also safe for switchgrass however it isn’t nearly as effective.
is approved for a wide range of crops and trees including corn, soybeans and sunflowers and peas. In some cases alfalfa and clover (read label first!!) (Same as Pendulum)
Prowl H2O Label
Prowl 3.3 EC Label
Prowl is reasonably priced at $22-32 per gallon, 2 to 3.5 pints per acre and $8-13 per acre.
Prowl H2O Herbicide - 2.5 Gallon Source
is used for alfalfa, clover, chicory, beans and peas. It is very expensive per gallon but not per acre.
$550 a gallon but only 4 oz per acre, use surfactant and AMS with it.
Same as Paramount and Drive 75 DF
Q4 - quinclorac herbicide label
is the same as remedy herbicide for killing brushy type shrubs and small trees, same as Garlon and Remedy
Remedy EC Herbicide Triclopyr
is a systemic, foliar herbicide in the pyridine group. It is used to control broadleaf weeds/trees while leaving grasses and conifers unaffected is recommended for the control of undesirable woody plants and annual and perennial broadleaved weeds on pastures and range-lands. Remedy is the same as Garlon 4
Remedy* Herbicide Label
Roundup is a non-selective herbicide that will kill almost any growing plant with the exception of Roundup Ready Crops but in light applications it can also be used effectively on many clovers and alfalfa's
Roundup 41% Glyphosate Label
CropSmart 41% Generic Glyphosate
The following is guidlines for adding AMS to glyphosate:
The addition of 1 to 2 percent dry ammonium sulfate by weight or 8.5 to 17 pounds per 100 gallons of water may increase the performance of this product, particularly when tank mixed with certain residual herbicides on annual and perennial weeds. The equivalent rate of ammonium sulfate in a liquid formulation may also be used. Ensure that ammonium sulfate is completely dissolved in the spray tank before adding herbicides. Thoroughly rinse the spray system with clean
water after use to reduce corrosion.
NOTE: When using ammonium sulfate, apply this product at rates recommended in this label. Lower rates will result in reduced performance
SedgeHammer is a herbicide for killing nutsedge in many turf grasses.
Select 2 EC herbicide
is used for control of grasses in alfalfa and clover. 4-8 oz. per acre costing $5-15 an acre.
Select (26.4% clethodim) must be used with crop oil and can also be used in soybeans, field peas, brassicas, sugar beets, sunflowers and a whole host of "non grass" type plants. Read the label carefully but this highly effective grass herbicide has many uses from your garden to your food plot.
As noted below it has proven to be perhaps more effective on difficult grasses then other grass herbicides such as Poast and Poast Plus. Currently a gallon runs somewhere between $125 to $140 and does not require a restricted use license to apply.
Select Max™ Herbicide
Clethodim (active in Select)
Volunteer (generic version of Select)
Arrow (generic version of Select grass herbicide)
Clethodim is a ACCase mode of action herbicide, similar to Assure II, Fusilade, and Poast. However, in NDSU research clethodim controls many grasses documented resistant to other ACCase herbicides. It is recommended that clethodim be used in rotation with herbicides of different modes of action and in a resistant weed management program.
Several generic brands of clethodim are available but not all formulations are identical to the original Select formulation. Select, Clethodim, Trigger and Volunteer are the same but Arrow, Prism, Section, and Select Max all have different formulations. Select Max is a 1 lb/gal formulation, contains activating adjuvants in the formulation, and allows use of NIS, PO, or MSO depending on tank-mix partner.
Stealth...(same as Prowl H2O) Stealth is a pre-emergent soil applied herbicide for residual control of tough annual grasses and small seeded broadleaf weeds. Stealth has excellent crop safety and is labeled for use on over 30 crops.
*** 2008 ND Weed Guide***
Sencor can be used on conventional soybeans and peas
SENCOR® 75 Labled crops
SENCOR® 75 DF Peas Label
(Ammonium salt of imazethapyr) is the same as Pursuit herbicide but Slay is a pricey version marketed to hunters.
Slay Herbicide label
Simazine 4L (Princep 4L) can be used for pre-emergence control of broadleaves in most trees, corn and switchgrass.
is a generic version of Stinger for broadleaf and thistle control in corn, brassicas, prairie grasses and tree plantings.
Spyder is the generic version of Oust and is offered by Keystone Spyder Herbicide
Surflan AS is used primarily for weed control in tree plantings.
Surflan AS Label
Another Surflan source
Online Surflan source
Surmount™ herbicide (picloram + fluroxypyr )Superior control of encroaching brush with residual control of broadleaf weeds
Excellent control of horsenettle, thistles, pricklypear, blackberry, honey locust, Chinese tallowtree, huisache
Surmount™ herbicide label
provides superior control of Canada thistle in sugarbeets, corn and other crops. And, unlike other herbicides, it can significantly reduce thistle populations the next season.
It will control many types of broadleaves in prairie plantings and tree plantings as well. Spur is a generic version.
is used on beets and brassicas. Stinger is $135.00 qrt. or $235.00 1/2 gallon.
Stinger herbicide label for brassicas
Synchrony - •
SYNCHRONY® XP provides selective PRE, PPI,
Burndown, and POST weed control in soybeans. Use
rates depend on weed size, weed spectrum, and desired
Note: SYNCHRONY® XP has also been safely used on peas
SYNCHRONY® XP Label
Thunder is a pre and pst emergence herbicide for weed/grass control in alfalfa, and most bean and pea crops and can also be used on a wide range of native grasses (see label)
Treflan is a pre-emergence herbicide that works best when incorporated.
Common crops are soybeans and alfalfa seedings but include other possibles such as brassicas. Till Treflan in very lightly to incorporate it before planting.
At $25 agallon it is a fairly low cost herbicide.
is labeled for red and alsike clover as well as alfalfa, birdsfoot-trefoil, soybeans, peas and brassicas.
Tordon® 22K specialty herbicide (picloram) Stops tough weeds and shrubs that other methods miss. Tordon 22K specialty herbicide is a Restricted Use Pesticide.
Tordon® 22K label
Valor Soybean herbicide
Valor® XLT Soybean Herbicide
Valor® XLT Soybean Herbicide label
Valor XLT offers the broadest spectrum, longest residual pre-emerge control of tough small and large seeded broadleaves as well as competitive grass performance. Valor XLT even controls glyphosate-resistant weeds including waterhemp, Palmer pigweed, marestail and giant ragweed.
Volunteer 26.4% Clethodim grass selective herbicide
Volunteer (generic version of Select)
Surfactants and Adjuvants
- crop oil, AMS, etc. to make your herbicides more effective.
surfactants or adjuvants
Role of spray adjuvants with postemergence herbicides
Effects of Surfactants and Adjuvants on postemergence herbicide
Be sure to use goggles and nitrile gloves when handling herbicides:
Other general links:
RECURRING QUESTIONS ON GRASS CONTROL IN FORAGE PLOTS - clover/alflafa
Managing Weeds in Alfalfa
Weed Control in Pastures with legumes
On line herbicide source
Agriliance Herbicide list
Agri-Star generic herbicide cross ref.
Calibrating Back Sprayers
Calibrating Field Sprayers
Iowa Noxious Weeds and the Iowa Weed Law
ISU Weed Science Links
ISU Weed Management - great link!
North Dakota Weed Control Guide
Weed ID Guide
Weed ID pictures
2007 Corn Weed Control Guide
Herbicides for direct tree seeding
Effective Herbicide Use in Christmas Tree Plantations
Mode of action - how herbicides work
Us pre-emergent herbicide with Roundup
Many herbicides come in 2 ½ gallon jugs or in the case of Oust $600 to 700 per container.
Most of us might only need to treat a small acreage or plot so in many cases 2 or more people can split herbicide.
This thread could be a place to post an interest in splitting a particular herbicide, ask questions and offer advice.
If anyone knows of other herbicides that would be useful for others to be aware of please post your ideas and I will add them.
Check Dbltree's Corner
for informational threads on crops and trees where these herbicides might be used