Seashore Paspalum Herbicide Review

AJ LindseyResearch AssociateUH-TPSS

Preemergence HerbicidesBarricade 4FL• Single product – Prodiamine• Uses: established turfgrasses, lawns, & sod nurseries

– Excluding golf course putting greens• Do not apply more than 48 oz/acre per year

– Mult. apps may be applied– Standard initial app = 21-26 oz/acre

• Avoid injury: do not apply to turf stressed by drought• Controls crabgrass and goosegrass

Preemergence Herbicides

Dimension 2EW• Single product – Dithiopyr• Uses: golf, athletic, & residential turf

– Excluding golf course greens• Do not apply more than 32 oz/acre per app• Do not apply more than 96 oz/acre per year• Controls crabgrass (Early-Post), goosegrass, smutgrass,

oxalis, & spurges

Preemergence HerbicidesTower• Single product – Dimethenamid-P• Uses: golf, athletic, & residential turf

– Excluding golf course putting greens and collars• Do not apply more than 32 oz/acre per app• Do not apply more than 64 oz/acre per year• Irrigation after application increases effectiveness• Controls sedges, goosegrass, & spurges

Preemergence HerbicidesSpecticle• Single product – Indaziflam• Uses: golf, athletic, & residential turf

– Excluding golf course putting greens• Do not apply more than 5 oz/acre per app• Do not apply more than 7.1 oz/acre per year• Do not apply to turf showing signs of stress• Irrigation required for activation• Controls crabgrass, goosegrass, spurges, & oxalis

Preemergence HerbicidesRonstar G• Single product – Oxadiazon• Uses: golf, athletic, & residential turf

– Excluding golf course putting greens and tees• Do not apply more than 200 lbs/acre per app (4.5 lbs ai/acre)• Do not apply more than twice a year• Do not apply to wet turf• Irrigation after application increases effectiveness• Controls crabgrass, goosegrass, & other annual weeds

Preemergence HerbicidesAnderson’s Goosegrass/Crabgrass Control• Two products – Oxadiazon & Bensulide• Uses: golf, athletic, & residential turf

– Bermudagrass greens– Seashore paspalum not on label

• Do not apply more than 305 lbs/acre per app• Do not apply more than 610 lbs/acre per year• Do not apply more than twice a year• Controls crabgrass & goosegrass

Postemergence Herbicides: Broadleaf

Trimec Southern• Mixture of 3 herbicides, no MSMA• Uses: golf, athletic, & residential turf• Do not apply more than 48 oz/acre per app• No more than 2 apps per year• Maximum recommended rate = 24 oz/acre

– Seashore paspalum sensitive to 2,4-D

Postemergence Herbicides: BroadleafSpeedZone Southern• Mixture of 4 herbicides, less 2,4-D to reduce injury to

warm season turf (no MSMA)• Adds carfentrazone to Trimec Southern for faster activity• Uses: golf, athletic, & residential turf• Do not apply more than 96 oz/acre per app• Do not apply more than 192 oz/acre per year• No more than 2 apps per year

Postemergence Herbicides: BroadleafQuicksilver T & O• Single product – Carfentrazone-ethyl• Uses: golf, athletic, & residential turf

– Excluding golf course greens & collars• Do not apply more than 6.7 oz/acre per app• Do not apply more than 26.8 oz/acre per year• Contract herbicide• Control of select broadleaf weeds and moss

– Burndown algae & cyanobacteria

Postemergence Herbicides: Broadleaf & Sedges

Basagran T & O• Single product – Sodium bentazon• Uses: golf, athletic, & residential turf

– Excluding golf course greens & collars• Do not apply more than 32 oz/acre per app• Do not apply more than 64 oz/acre per year• Best results: do not mow within 5 days of app• Selective control of broadleaf weeds and yellow nutsedge

Postemergence Herbicides:Broadleaf, Grass & Sedges

Katana• Single product – Flazasulfuron• Uses: golf, athletic, & sod farms

– Residential turf limited to spot applicaitons• Do not apply more than 1.5 oz/acre per app• Do not apply more than 9.0 oz/acre per year• Max 3 apps per year• Controls kyllinga, nutsedge, & crabgrass

Postemergence Herbicides:Broadleaf, Grass & Sedges

Certainty• Single product – Sulfosulfuron• Uses: golf, athletic, & residential turf

– Excluding golf course greens• Do not apply more than 2.66 oz/acre per year

– Standard initial app: 1.25 – 2 oz/acre• Systemic, best results when weeds actively growing• Controls kyllinga, nutsedge, & dallisgrass (suppression)

Postemergence Herbicides:Broadleaf, Grass & Sedges

Image 70DG• Single product – Imazaquin• Uses: golf, athletic, & residential turf

– Excluding golf course greens• Do not apply more than 11.4 oz/acre per app• Sufficient rainfall or irrigation necessary for best results• Controls nutsedge, kyllinga, sandbur, & crabgrass

(suppression)

Postemergence Herbicides:Broadleaf, Grass & Sedges

Dismiss• Single product – Sulfentrazone• Uses: golf, athletic, & residential turf

– Excluding golf course greens & tees• Do not apply more than 12 oz/acre per app• Controls kyllinga, nutsedge, goosegrass, & brd lf weeds

– Best if applied before pre tiller stage of goosegrass

Postemergence Herbicides: SedgesProSedge/SedgeHammer• Single product – Halosulfuron-methyl• Uses: golf, athletic, & residential turf

– Excluding golf course greens• Do not apply more than 2/3 – 1 1/3 oz/acre per app• Do not apply more than 2 2/3 oz/acre per year• Best results: do not mow within 5 days of app• Control of purple/yellow nutsedge & kyllingas (less

effective)

Postemergence Herbicides: NonselectiveRoundup Custom• Single product – Glyphosate (no surfactant)

– Needs surfactant for best weed control• Uses: golf, sod farms, & residential turf• Do not apply more than 12 oz/acre per app

– Temporary turf discoloration• Do not apply more than 256 oz/acre per year• Spot treatments common• Aquatic sites okay

Postemergence Herbicides: GrassesCutless 50W – Growth Regulator• Single product – Flurprimidol• Uses: turf other than turf grown for sale

– Excluding golf course greens• Do not apply more than 1 lb/acre per app• Do not apply more than 6 lbs/acre per year• Increases turf density

– Reduces leaf blade length & stem internode elongation– Root growth and lateral expansion not affected

Postemergence Herbicides: GrassesPrograss• Single product – Ethofumesate• Uses: golf, athletic, & residential turf

– Excluding golf course greens• Do not apply more than 1/3 gal/acre per app• Do not apply more than 6 gal/ acre per year• Bermudagrass suppression (mult. apps)• PRE & early POST activity: crabgrass• Reduce completion from nutsedge

Postemergence Herbicides: GrassesPylex• Single product – Topramezone• Uses: golf, athletic, & residential turf

– Excluding golf course greens & collars• Do not apply more than 2 oz/acre per app• Do not apply more than 4 oz/acre per year• Do not apply more than 3 times per year• Crop oil recommended as spray enhancer• Controls goosegrass & crabgrass

Pylex Supplemental Label

Postemergence Herbicides: GrassesTenacity• Single product – Mesotrione• Uses: golf, athletic, & residential turf

– Excluding golf course greens w/ 5’ buffer zone b/w treated area• Do not apply more than 16 oz/acre per year• Controls goosegrass, crabgrass, & lovegrass• Precaution:

Postemergence Herbicides: Grasses

Sencor 75DW• Single product – Metribuzin• Uses: golf, athletic, & park turf

– Excluding golf course greens, tees, & aprons• Estb. Bermudagrass ½” or higher• Seashore paspalum not on label

Postemergence Herbicides: Grasses

Sencor 75DW• Do not apply more than 32 oz/acre per year• Do not apply more than 2 times per year• Rates: 5.3 – 10.7 oz/acre per app• Use low rate w/Ph > 7.5• Delay mowing for 3 days• Controls goosegrass