9 best authority herbicides

Authority herbicides are a group of selective pre-emergent herbicides used in agriculture and landscaping for weed control. They are primarily employed to prevent the growth of various broadleaf and grassy weeds in crop fields, gardens, lawns, and other outdoor settings. Here's what you should know about Authority herbicides:

  1. Pre-Emergent Herbicides: Authority herbicides are categorized as pre-emergent herbicides, which means they are applied to the soil before weeds have a chance to germinate and grow. They create a barrier that inhibits weed seedlings from emerging from the soil.

  2. Selective Action: These herbicides are selective, meaning they target specific types of weeds while leaving desired plants largely unaffected. They are commonly used in agricultural settings to protect crops like soybeans, cotton, sunflowers, and other crops from weed competition.

  3. Active Ingredient: Authority herbicides typically contain the active ingredient sulfentrazone.Sulfentrazone is effective against a wide range of broadleaf weeds and some grassy weeds.

  4. Weed Control Spectrum: Authority herbicides are known for their effectiveness against a variety of troublesome weeds, including pigweed, lambsquarters, morning glory, and other annual broadleaf weeds.

  5. Mode of Action: These herbicides work by inhibiting the growth of weed seedlings through disruption of cell membranes and metabolic processes, ultimately leading to the death of the young weeds.

  6. Application Timing: Proper timing of application is critical for the effectiveness of Authority herbicides. They need to be applied before the targeted weeds germinate, typically in the early spring or just before planting crops.

  7. Residual Activity: Authority herbicides have residual activity, which means they can remain effective in the soil for an extended period after application. This helps provide weed control throughout the growing season.

  8. Crop Safety: While Authority herbicides are selective and designed to minimize harm to crops, it's essential to follow label instructions carefully to ensure proper application and crop safety. Some crops may be more sensitive to these herbicides than others.

  9. Usage in Home Gardening: Authority herbicides are not typically used in small-scale home gardening but are more commonly employed in large-scale agricultural operations. Home gardeners often use other pre-emergent herbicides or manual weed control methods.

  10. Environmental Considerations: As with any herbicide, it's crucial to use Authority herbicides responsibly and in accordance with local regulations to minimize environmental impacts. Proper disposal of containers and adherence to application guidelines are essential.

Always consult the product label and follow recommended safety precautions and usage instructions when using any herbicide, including Authority herbicides, to ensure effective weed control while minimizing risks to crops and the environment.

Below you can find our editor's choice of the best authority herbicides on the market
  

Compare-N-Save 016869 Concentrate Grass and Weed Killer, 41-Percent Glyphosate, 1-Gallon , White

Compare-N-Save

Based on 12 reviews Check latest price

Product description

Get to the root and kill grass and weeds with Compare-N-Save 41-percent Glyphosate Concentrate Grass and Weed Killer. Use for lawn or garden replacement, on patios, walkways, or in and around fences and gardens to remove unwanted grass and weeds. The 2.5 gal. container will treat over 630,000 sq. ft. with visible results in as little as 2 to 4 days. Kills all grass and weeds.

  • Rainproof in 2 hours
  • Visible results in as little as 2 to 4 days
  • Contains 41-percent glyphosate
  • Covers over 25,000 square feet
  • Makes up to 85 gal. of ready-to-use spray. Note: Packaging may vary

Product features

Driveways and Walkways

Keep pathways clear of weeds and grasses.

Along Fences

Spray along fences to keep your property tamed.

Around Flower Beds and Trees and Shrubs

Spot spray pesky weeds in and around your landscaping.

In and Around Fruit and Vegetable Gardens

Follow label directions for safe use around your edibles.

Makes up to 10 gallons of spray solution!

This powerful product kills almost all annual and perennial weeds, grasses and other unwanted plants. Simply mix it with water and use to control unwanted growth around landscaping, walkways and driveways, for lawn restoration or renovation, for garden plot preparation, for brush and vine control and even as a stump treatment.

Treats up to 3,000 square feet.

Makes up to 21 gallons of spray solution!

This powerful product kills almost all annual and perennial weeds, grasses and other unwanted plants. Simply mix it with water and use to control unwanted growth around landscaping, walkways and driveways, for lawn restoration or renovation, for garden plot preparation, for brush and vine control and even as a stump treatment.

Treats up to 6,300 square feet.

Makes up to 85 gallons of spray solution!

This powerful product kills almost all annual and perennial weeds, grasses and other unwanted plants. Simply mix it with water and use to control unwanted growth around landscaping, walkways and driveways, for lawn restoration or renovation, for garden plot preparation, for brush and vine control and even as a stump treatment.

Treats up to 25,500 square feet.

Makes up to 210 gallons of spray solution!

This powerful product kills almost all annual and perennial weeds, grasses and other unwanted plants. Simply mix it with water and use to control unwanted growth around landscaping, walkways and driveways, for lawn restoration or renovation, for garden plot preparation, for brush and vine control and even as a stump treatment.

Treats up to 63,000 square feet.

Authority: A Novel (The Southern Reach Trilogy, 2)

FSG Originals

Based on 1 reviews Check latest price

Ranger++Ranger+Pro+Glyphosate++Herbicide++Concentrate++2.5+gal.

Ranger Pro

Based on 601 reviews Check latest price

Product description

Ranger Pro Herbicide is a complete broad-spectrum post-emergence professional glyphosate herbicide for industrial, turf, and ornamental weed control. 41% glyphosate product with surfactant Same active ingredient as the brands Roundup Pro, Eraser, Glyphosate Plus, Glystar Plus, Hi Yield, Imitator Plus, Prosecutor Plus, Strikeout Loaded, Razor Pro, and others Used for non-selective weed control Rainfast in as little as one hour Weeds controlled (but not limited to) include: Barnyardgrass Carpetweed Cheat Chickweed Cocklebur Crabgrass Fiddleneck Foxtail Goosegrass Johnsongrass Knotweed Lambsquarter Nightshade Ragweed Sandbur Smartweed Spurge Quackgrass Velvetleaf Canada thistle

  • Glyphosate- 41% (same active ingredient as Roundup)
  • Residential areas, Parks and Recreational Areas
  • Mix Ranger Pro at a rate of 2-3 ounces per gallon of water.

User questions & answers

Question: I was planning to drill holes in some fresh cut stumps and inject this to kill the roots. Will that work
Answer: Yes it will kill stumps you have to put it on right after cutting the tree. You don't have to drill holes, "paint" it on the cut part of the stump full strength. I have been doing this for years. This is essentially like spraying the leaves, (for the post emergent guy).
Question: how long does it kill the vegetation for? I am contemplating this or the ortho total vegetation killer that lasts 12 months. Is this better than the o
Answer: Haven't used Ortho's product. We have a pond fed by run off, lot's of wild life and pets so we opt for some amount of "touch up" spraying mid summer if we get some late rains. We like the Glyposate environmental safety record so far, and feel it's worth the effort.
Question: What is the manufacturer's recommended dilution Ratio
Answer: Go to the Ranger Pro Herbicide website and download PDF file for dilution instructions
Question: How long is this effective? If I apply how long after can I plant/grow brassicas cow peas, soybeans etc
Answer: highly effective, equivalent to ingrediants in round up.. you should read instructions on when you can replant. this is the pro strength at 41%. round up over the counter i think is 19%

Tenacity Turf Herbicide - 8 ounces

Syngenta

Based on 4 reviews Check latest price

Product description

Tenacity herbicide can be used for pre- and post-emergence control of more than 46 broadleaf weed and grass species. Its active ingredient, mesotrione, is based on a naturally occurring compound produced by the bottlebrush plant (Callistemon citrinus) that inhibits photosynthesis in susceptible plant species. It is absorbed by plants through the roots, shoots and leaves and distributed throughout the plant by both xylem and phloem translocation. KEY FEATURES Weeds controlled include crabgrass, ground ivy, yellow foxtail, yellow nutsedge and nimblewill. It also controls unwanted bentgrass. Provides post-emergent control of tough-to-control weeds Controls weeds at seeding reducing weed competition KEY BENEFITS Prevents and controls crabgrass pre or post up to four tillers Eliminates weeds at seeding so new grass can flourish.

  • Tenacity is a systemic pre-emergence and post-emergence herbicide for the selective contact and residual control of weeds in turfgrasses.
  • When applied as a pre-emergent, weeds absorb Tenacity during emergence from the soil.
  • Target pests: Barnyardgrass, Carpetweed, Chickweed, Clover, Crabgrass (large & smooth), Dandelion, Foxtail, Goosegrass, Henbit, Yellow Nutsedge, Purslane, Thistle, Wild Carrot and others
  • Active Ingredient: Mesotrione 40%
  • Date printed on bottle is Manufacture Date, not expiration. Shelf Life: 5-8 years from date of manufacture when properly stored. Keep out of direct sunlight and extreme temperatures

User questions & answers

Question: How much lawn will this 8oz bottle cover? We have .3 of an acre
Answer: The 8 oz bottle will produce 96 gallons of solution using 1/2 teaspoon per gallon of water. I forget what the coverage is but it will certainly cover .3 acres using a pump sprayer.I have been using mine on my .5 acre for two years and I have only used about 1/3 of the 8 oz.
Question: Anyone know how tenacity compares to a product called "dismiss"? i have some nutsedge to get rid of and i'm trying to decide which to get. thanks
Answer: tenacity is labeled for nutsedge. . Dismiss is the the better choice, however. Usually with tenacity, you have to apply it at least two to three times, at two week intervals. They are both broad spectrum. Tenaciity's claim to fame is its ability to kill grassy weeds, like Nimblewill. They are both labeled for Goose grass. I don't think Dismiss is labeled for Nimblewill. PS: spectricide makes a good 4 way for the home owner. It has 24d, dicamba, quinchlorac, and sulfantrazone (dismiss). spelling. they sell it on amazon and lowes.
Question: can i apply over
Answer: The official answer is no for most herbicides. Depending on what you're trying to control. Here is a link to one of the best reports I have found - http://archive.lib.msu.edu/tic/golfd/article/2012oct33.pdf. This report shows great results with mid-80 degree temperatures in the control of POA ANA (Which is what I'm challenged with controlling). The general rule of thumb with Tenacity is the higher the temperatures the more applications (small dosage) needed for control. Tenacity has a half-life of 5-15 days depending on the temperatures - the higher temperatures the lower the half-life. The report and other reading also indicates that Tenacity needs to stay in the plant at or above the half life levels for ~ about 14 days or so to gain a high level of control. My advice would be to look for a week when temperatures are expected to average below 90 degrees and make a couple applications during that week and observe the control that you achieve - then goo from there. I experimented for a couple seasons using this report to get a feel for the best application frequency, rates, temperatures and timing (time of year). I hope this is helpful. Good luck and all the best.
Question: what is surfactant? Is it included with tenacity
Answer: A surfactant is a separate product that you add to your applicator tank. It helps the Tenacity stick to leaf blades and better kill the weeds. I used Bonide Turbo spreader sticker. It, or something similar is available in small bottles in garden centers. The ratio I used for nimblewil was 1 teaspoon of Tenacity and four teaspoons of surfactant per 1 gallon of Water.

Southern Ag CROSSBOW32 Weed & Brush Killer, 32oz-1 Quart Crossbow Specialty Herbicide 2 4 D & Triclopyr Weed & Brus, (s) (32 oz)

Southern Ag

Based on 1 reviews Check latest price

Product description

Controls most unwanted trees and brush. Use on rangeland, grass pastures, non-crop areas. CONTAINS: 2,4-dichlorophenoxyacetic acid, butoxyethyl ester, Triclopyr BEE APPLICATION: For spot applications use 4 to 6 fl. oz in 3 gallons of water. spray to thoroughly wet all foliage. Application types and rates vary, consult product label for specifics. INFO ; GUIDES Download Label Download Safety Data Sheet (SDS) You will need Adobe Acrobat Reader to view PDF documents. Download a free copy from the Adobe Web site.

  • Size: 1 Quart
  • Controls most unwanted trees and brush.
  • Use on rangeland, grass pastures, non-crop areas.
  • CONTAINS: 2,4-dichlorophenoxyacetic acid, butoxyethyl ester, Triclopyr
  • For large quantity discount consideration or to request a mixed multi-pack, please message us.

User questions & answers

Question: Is this safe to use on lawns - does it kill just weeks or the good grass as well
Answer: It's rechargable.
Question: I have a very big problem with creeping charlie. Will this stuff work
Answer: Yes
Question: do you need to mix this with a surfacant, like diesel
Answer: Yes, however we do sell a branded outdoor shower, which come in and out of stock
Question: is this a ready mixed, or concentrate
Answer: It can spray up to 15-20 ft

Product features

Crossbow Specialty Herbicide

• Controls most unwanted trees and brush

• Use on rangeland, grass pastures, non-crop areas

CONTAINS: 2,4-dichlorophenoxyacetic acid,butoxyethyl ester, Triclopyr BEE

APPLICATION: For spot applications use 4 to 6fl. oz in 3 gallons of water. spray to thoroughlywet all foliage. Application types and rates vary,consult product label for specifics.

*For use on plants in non-crop and non-timber areas only. Not for use on crops, timber, or other plants being grown for sale or other commercial use, or for commercial seed production, or for research purposes.

Authority Hip and Joint Support Jerky Sticks 1lb and Tesadorz Resealable Bags

Cosas y Cosas

Based on 50 reviews Check latest price

Product description

Authority Hip and Joint Support Jerky Sticks, 1 Pound (Chicken flavor) and one set of Tesadorz resealable bags bundle

  • Authority Hip and Joint Support Jerky Sticks (1 Pound) and one set of Tesadorz resealable bags bundle
  • Authority hip and joint support chicken flavor jerky sticks are grain and gluten free and the treats contain no artificial flavors, colors or preservatives. There is no corn, wheat or soy in the treats
  • These jerky treats are Made in the USA and the ingredients include: chicken, vegetable glycerin, pea protein, mixed tocopherols, rosemary extract, glucosamine hydrochloride, chondroitin sulfate, turmeric (color)
  • One set of 2 Tesadorz 8x10" resealable bags. These bags are ideal for taking a few treats for your pet while traveling or out at the park
  • These jerky treats are not intended to replace food and are recommended for dogs 3 pounds and up

User questions & answers

Question: Is this 2 1lb packages
Answer: I just mixed it with water, like it says on the instructions. It didn't work as well on some weeds, worked pretty good after several applications on blackberry bushes, which is why I got it.
Question: Why is this more than double than what pets mart has it for
Answer: It is concentrate. if you peel back the label it has the mixing instructions.

Ortho Weed B Gon Weed Killer for Lawns Ready-To-Use2 with Comfort Wand, 1 gal.

Based on 1 reviews Check latest price

Product description

Ortho Weed B Gon Weed Killer for Lawns Ready-To-Use2 is guaranteed to kill weeds to the roots. With the convenient Comfort Wand applicator, you can kill over 250+ weeds (See label for listed weeds.) for easy and effective spot treatment without damaging your lawn. Ortho Weed B Gon is specially designed for Northern and Southern lawns; you will see results in hours!

  • Lawn-friendly weed control
  • Won’t harm the lawn (when used as directed)
  • Kills weeds to the root
  • Rain-proof in 1 hour
  • Results in hours
  • Kills dandelions, clover and other broadleaf weeds
  • Won’t harm the lawn – Guaranteed (When used as directed.)

User questions & answers

Question: Does this product kill the grasspurs / stickers
Answer: Only ONE bag. Yes, very expensive. My 65 lb. puppy devours one stick in seconds! I used as healthy treat, but at the price, I've moved on. Sorry Authority. Your dry dog food is a good buy. Jim
Question: how do I change batteries in weed b gone with wand
Answer: It’s the same thing I get it at Pet Smart
Question: Is this safe to use on ice plants? i have a ton of thistles growing in the ice plants i want to get rid of
Answer: I have used it on broadleaf weeds in a fesque/bluegrass lawn. It does not seem to affect the grass. I use a surfactant to assure adhesion to leaves of the target weeds.
Question: Does this definitely work on dandelion and blackberry
Answer: Yes, Southern Ag Crossbow Specialty Herbicide is labeled to kill items like creeping charlie. The application rate is 1 1/3 fl oz Crossbow Specialty Herbicide per one gallon of water.

Product features

Ortho Weed B Gon Weed Killer

Ortho Weed B Gon Weed Killer for Lawns kills dandelions, clover and other broadleaf weeds to the root. It targets lawn weeds and won’t harm the lawn - guaranteed*.

For best results, spray anytime weeds are actively growing. *When used as directed.

Concentrate

Great value - ideal for large or small areas. Available sizes include: 32 oz. covers up to 16,000 sq. ft. and 1 gallon covers up to 64,000 sq. ft. Use with a Tank Sprayer or Ortho Dial N Spray.

Ready to Use

Perfect for spot treatments. Available sizes include: 24 oz. Ready to Use, 1 Gallon Ready to Use with Trigger or 1 Gallon Ready to Use with Comfort Wand. Comfort Wand provides precise control - spray only what you want - and is reusable with the refill.

Ready to Spray

Connect directly to a garden hose to use for a broadcast application with no mixing or measuring. Available in 32 oz. size that covers up to 16,000 sq. ft.

Authority Puppy Dry Dog Food (Chicken and Rice) 6lbs and Especiales Cosas Mixing Spatula

Cosas y Cosas

Based on 18 reviews Check latest price

Product description

Authority dry puppy food, chicken and rice flavor and Especiales Cosas mixing spatula bundle. One 6(six) pound bag of dry dog food.

  • Authority dry puppy food, chicken and rice flavor, 6lbs and Especiales Cosas mixing spatula bundle
  • This puppy food has no artificial colors, flavors or preservatives and comes packaged in a 6 (six) pound bag. It's main ingredient is deboned chicken
  • One 7 inch Especiales Cosas plastic mixing spatula (colors may vary). The spatula can be used for mixing water in with the dry food, adding toppings, etc.
  • The everyday health puppy food is formulated for dogs under the age of 1 and can be fed to puppies of all sizes
  • Chicken and rice flavor includes nutrients that help promote brain and eye development, a shiny coat and good oral health

Green Gobbler Vinegar Weed & Grass Killer | Natural and Organic Weed & Grass Killer |1 Gallon

Based on 6 reviews Check latest price
  • KILLS WEEDS & GRASS FAST - Eliminate any type of weed in just a matter of hours. Expect full desiccation in less than 24 hours. Green Gobbler contains 20% acetic acid. Use on crabgrass, dandelions, clover weeds, white clover, moss, etc.
  • SAFE TO USE ANYWHERE - Perfect for residential, commercial, industrial and agricultural use. Apply where weeds and grasses are not desired. Use on driveways, sidewalks, concrete, mulch beds, pavers, flower beds, parking lots, farmlands, barns, etc. Ready to use right out the container.
  • CERTIFIED FOR ORGANIC USE - Completely eliminates and desiccates weeds and grasses without using toxic chemicals. Made straight from corn. OMRI listed weed killer and certified for organic use.
  • POWERFUL FORMULA - NO potentially cancer-causing chemicals. Glyphosate-free. 20% formula is four times stronger than traditional table vinegar. Made strictly from ethanol distilled from corn grain.
  • 30-DAY MONEY BACK GUARANTEE - If you are not pleased, call or email us with your order number and we will reimburse your entire purchase. We value our customers and we stand behind all of our products. Expect a refund with no questions asked.

User questions & answers

Question: Is it safe to use at the edge of a lake
Answer: Sí, lo hace, pero hay que tener cuidado al rociarlo, ya que puede matarlo todo. Aunque he estado tratando de matar un árbol pequeño, pero no he tenido exito. No camine sobre esa área despues de rociar, tambien hágalo en Un buen día no ventoso o lluvia.
Question: How soon can you plant your garden after using this product
Answer: Hello! Kill weeds and prevents weeds for up to 1 year Treats 17,297 sq. ft. Ideal for fence rows, gravel paths, sidewalks, driveways, parking areas and around farm buildings and barns Apply to locations only where no vegetation is desired Can be used for total vegetation control (bare-ground) or spot control of brush, vines and weeds
Question: Does anyone know if this will work on bamboo? Yes, loose in the years. Ugh. Thanks
Answer: Ok there are two rates on the label. One is 6 ounces per gallon for spot treatments and the other is confusing and is more for spraying large areas. It says to use 7.4 ounces in 1 to 10 gallons of water and to spray that over 1000 square feet. Basically what that means is use whatever water between 1-10 gallons that it takes you to cover 1000 square feet at the pace you are working and the rate your sprayer is putting out spray. What is important is that you get 7.4 ounces of chemical over 1000 square feet. Call us at 800-264-5281 if you have any questions.
Question: Is this safe to use around plants and trees that are in mulch
Answer: six oz. to one gal.RM43 43% Glyphosate Plus Weed Preventer Total Vegetation Control is ideal for fence rows, gravel paths, sidewalks, driveways, parking areas and around farm buildings and barns -- anywhere you want to spray once and be done for up to 1 year. The concentrated formula of glyphosate and imazapyr is effective against most noxious weeds, grasses, vines, brush and trees. For use on non-crop areas as a spot treatment for brush, vines and weeds or on bare ground for total vegetation control. Do not spray this product over the root systems of desirable plants. One gallon treats 17,297 square feet.

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