Sethoxydim is a post-emergent active ingredient found in selective herbicides. It belongs to the cyclohexanone chemical family. As a selective herbicide, it only effects specific listed plants. These include perennial and annual grasses found in field, ornamental, vegetable, fruit crops. It is known for its crabgrass, bahiagrass, wild oats, and annual ryegrass control. Sethoxydim will not kill sedges or broadleaf weeds.
Sethoxydim Herbicide Products
Sethoxydim is found in Bonide's Over The Top Grass Killer and Basf's, Segment Herbicide. Both contain sethoxydim 13.0%. They are ec (emulsifiable concentrates) and should be used with surfactants or oil adjuvants such as Dyne Amic Surfactant.
Sethoxydim Mode of Action -Lipid Inhibitor
Sethoxydim inhibits the biosynthesis of lipids in grasses, with very little effect on broadleaf herbs and woody plants. It quickly enters grass species through the foliage and travels throughout the plant. Symptoms include the leaf tips getting red or purple and leaf tip necrosis. Growth stops within a couple days; it takes 7-10 days to see the full effect.
Method and Timing of Applications
Sethoxydim Herbicides are applied as a broadcast spray, spot or localized spray applications. Rates vary according to different labels. Management with Sethoxidim is best achieved with early spring applications, and later summer applications for residual control.
Sethoxydim belongs in the III toxicity class by EPA. Its signal word is "caution", and is slightly toxic. It has moderate toxicity to fish and has low toxicity to birds. To better understand product labels, click here.
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Grass Beater Over-The-Top Grass Killer is a broad spectrum, selective and post-emergent herbicide with Sethoxydim 13.0%. Compare Bonide;'s Grass Beater Over The Top Grass Killer Concentrate to Poast Plus). Bonide's Grass Beater Over The Top Grass Killer does not harm desirable plants when used as directed. This herbicide is labeled for control of annual and perennial grass weeds. It will not control broadleaf or sedge weeds.
Grass crops, such as small grains, corn, sorghum, rice, and ornamental grasses, such as turf, are vulnerable to this product; be careful in application.Learn More
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Fertilome Over the Top II Grass Killer is a selective, post-emergent, broad-spectrum herbicide. This systemic herbicide kills weedy grasses such as Bermudagrass, Crabgrass, Foxtails, Quackgrass, and more weedy grasses without injuring desirable plants. As a systemic herbicide, it travels through the entire plant after it is absorbed by foliage. This "over-the-top' grass killer will stop or slow growth within two days. It is important to use a surfactant or spreader sticker for absorption, such as Alligare Surfactant.
Fertilome's Over the Top II has Sethoxydim 18.0%, the same formulation as Poast. Over the Top II Grass Killer concentrate makes 8 gallons of a spray solution.Learn More
Starting at: $25.90Hi-Yield Grass Killer with sethoxydim 18.0%, is a systemic, post-emergent, selective herbicide. It lets you spray over desirable plants to kill annual and perennial weedy grasses such as Crabgrass, Bermudagrass, Quackgrass, Foxtails and other weed grasses. Learn More
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Grass Getter with sethoxydim is a post-emergent, selective herbicide used to kill such hard-to-kill grasses like johnsongrass, bermudagrass, crabgrass, foxtail, and quackgrass (see label for all the grasses). It is a systemic grass killer that selectively eliminates grasses out of broadleaf plants without injuring desirable plants. Products such as 2-4-D does the exact opposite; it selectively removes broadleaf weeds from grasses.Learn More
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Segment II Herbicide is a broad-spectrum, post-emergent control of annual and perennial grassy weed such as crabgrass, barnyardgrass, bahiagrass, bermudagrass and many more listed grasses. As a selective herbicide it may be applied in centipedegrass and established fine and tall fescues. Segment II is not formulated to contol control sedges or broadleaf weeds.Learn More