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Herbicides
Post Emergents
View list of all Pesticides

Specialty - Nutsedge

Pesticide Classification
_X Herbicide __ Fungicide
__ Bactericide
__ Insecticide/Miticide
__ Molluscicide __ Repellent
Properties Properties Properties
_X Selective
__ Non-selective

__ Pre-emergent
_X Post-emergent

_X Systemic
__ Contact
__ Broad Spectrum
__ Specific

__ Systemic
__ Non-systemic

__ Protectant
__ Eradicant
__ Synthetic
__ Biological
__ Oil
__ Soap
__ Botanical
__ Other
__ Broad-spectrum
__ Specific

__ Systemic
__ Non-systemic

__ Contact poison
__ Stomach poison
__ Other

Common Brand Names:
Sedgehammer (Manage*)

Chemical Action and Usages: Sedgehammer (active ingredient halosulfuron-methyl) is a selective, post emergence herbicide for the control of sedges such as purple and yellow nutsedge (often referred to as water grass or nut grass) in established lawns, ornamental turf grass and landscaped areas and on other non-crop sites including golf courses, sports fields, public recreation areas and school grounds. *Monsanto Manage was the original brand name of this product. Sedgehammer is available as a WDG (water dispersible granule) in a .09 gram packet that makes 1-2 gallons of spray that should cover a 1,000 sq. ft. area. It is also available in a 1.3 oz. commercial size bottle with a scoop to measure out .09 grams for each 1-2 gallons of finished product you wish to make. Best control is obtained when treating the sedges when they are growing actively and when they are in the middle of your mowing cycle (approximately 2-3 days after mowing and 2-3 days before mowing again). The immediate effect is that the nutsedge will cease growing and the chemical will be translocated to the roots of the plant with complete death in about two weeks. Best results are also obtained when adding a surfactant (spreader sticker) to the spray mixture.

Cautions/Instructions: Read the label carefully and apply the product according to the directions on the label. Avoid application of this product when turf grass or nutsedge is under stress since turf injury and poor nutsedge control may result. Do not apply when rainfall or irrigation is expected within four hours.

Toxicity: Relatively low toxicity to humans and domestic animals orally or by inhalation, but may cause eye irritation.

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