Turf Weed and HTurf Weed and H

8:30 8:30 –– 9:30 am Presentation at the Oct 19 9:30 am Presentation at the Oct 19 CC2010 Pesticide Applicator Con2010 Pesticide Applicator Con

Dennis MProfessor & TurProfessor & Tur

SpecOkl h StOklahoma Sta

Herbicide UpdateHerbicide Updatepp

(Tulsa) and Nov 4(Tulsa) and Nov 4thth (Oklahoma City) Fall (Oklahoma City) Fall tinuing Education Workshopstinuing Education Workshops

artin, PhDfgrass Extensionfgrass Extension

cialistt U i itate University

TypeTypeBroad

– Nofl

Grass– P

rafl

SedgeSedge– P

le

Image credit

es of Turfgrass Weedses of Turfgrass WeedsdleavesNet venation, opposite, alternate , pp ,or whorled leaves, showy lowers.sesParallel venation, alternate or 2-

k d l d danked leaves, rounded or lattened stems.esesParallel venation, 3-ranked eaves, triangular stems, g

t: Dr. John Boyd, Univ of Arkansas

b t h d l fboat-shaped leaf tip

winter annual

aImage credit: Dr. John Boyd, Univ of Ar

annual bluegrassrkansas

winter an

iprominauricle

A lAnnual ryegrass

Image credit: Dr. John Boyd, Univ o

nnual

tnent es

of Arkansas

winter annual

parsleyImage credit: Dr. John Boyd, Univ o

y piertof Arkansas

fruit

lawn burweed

Image credit: Dr. John Boyd, Univ of Arkwinter annual

kansas

henhen

Image cre

nbitnbit

i t lwinter annual

dit: Dr. John Boyd, Univ of Arkansas

Image credit: Dr. John Boyd, Univ of

winter annual

sticky chickweed

f Arkansas

common chickweed Image cr

winter annual

redit: Dr. John Boyd, Univ of Arkansas

Johnny Jummp-up violet

WinterAnnualBroadleafBroadleaf

i t lwinter annual

Image credit: Dr. John Boyd, Univ o

field madder

of Arkansas

winter annual corn spewinter annual corn speImage credit: Dr. John Boyd, Univ of A

seedling

edwelledwellArkansas

winter annual

Image credit: Dr. John Boyd, Univ of

hairy bittercress –i t lwinter annual

f Arkansas

field madder

winter annual

Noxious Weed Noxious Weed –– mustmustfrom setting seed as from setting seed as from setting seed as from setting seed as

1st year: vegetativ1st year: vegetativ2nd year: flowers

Musk thistle rosette -vegetative stage

t control to keep it t control to keep it per the lawper the lawper the lawper the law

ve growthve growthand dies.

Flower - reproductive ststage

winter annualwinter annual

Image credit: Dr. John Boyd, Univ of A

h h d’shepherd’s purse

fruit

Arkansas

winter annuals

red deadnettle

Image credit: Dr. John Boyd, Univ of A

henbit

Arkansas

winter annual

Image credit: Dr. John Boyd, Univ of A

Spotted burclover

Arkansas

oniononiongarlic

wildd garlic – winter perennial

large crabgrass

Image credit: Dr. John Boyd, Univ of A

summer annualsummer annual

Arkansas

Summer AnnuaSummer Annua

crabgrass

goosegrass

l Grassy Weedsl Grassy Weeds

crabgrass

sandbur

Image credit:

summer perennial

: Dr. John Boyd, Univ of Arkansas

goosegrass seedlinggoosegrass seedling

Summer Annual GrassSummer Annual Grass

This is a monocot because it h s 1 s d l fit has 1 seed leaf

Image credit: Dr. John Boyd, Univ of Ark

henbit seedlinghenbit seedling

Broadleaf, Winter Annual

This is a dicot because it has 2 seed leavesit has 2 seed leaves

kansas

summer annual

goosegrassgoosegrass

Image credit: Dr. John Boyd, Univ of AArkansas

Annual or perennial

Image credit: Dr. John Boyd, Univ of A

oxalisArkansas

summer annual

prostrate spurge

Image credit: Dr. John Boyd, Univ of A

milky sap

Arkansas

Summer Annual BrSummer Annual Br

knotweed prostrate spurge prostrate spurge

roadleaf Weedsroadleaf Weeds

yellow nutsedgeImage credit: Dr. John Boyd, Univ of A

Summer perennials

purple nutsedgeArkansas

purple and yellowpurple and yellowpurple and yellow purple and yellow

purple nutsedge

Image credit: Dr. John Boyd, Univ of A

nutsedge flowersnutsedge flowersnutsedge flowersnutsedge flowers

yellow nutsedge

Arkansas

yellow and purple yellow and purple

purple nutsedge

nutsedge leaf tipsnutsedge leaf tips

yellow nutsedge

yellow and purpleyellow and purple

purple nutsedge tuber

e nutsedge tuberse nutsedge tubers

yellow nutsedge tuber

Annual Sedge (Cg (

Image credit: Dr. John Boyd, Univ of A

Cyperus compressus)yp p )

Arkansas

summersummer perennial

Image credit: Dr. John Boyd, Univ of A

green kyllingagreen kyllinga

Arkansas

seedheadb hibahiagras

Image credit: Dr. John Boyd, Univ of A

rhizome

i ls – summer perennialArkansas

b dbermudagImage credit: Dr. John Boyd, Univ of A

i lgrass – summer perennialArkansas

summer perennial dalli

Image cr

isgrass

redit: Dr. John Boyd, Univ of Arkansas

cool-season perennial

Image credit: Dr. John Boyd, Univ of A

tall fesc etall fescue

Arkansas

Virginia buttonImage credit: Dr. John Boyd, Univ of A

nweed summer perennialArkansas

i lperennial

white clover

Image credit: Dr. John Boyd, Univ of f Arkansas

winter perennial

Image credit: Dr. John Boyd, Univ of A

dandeliondandelion

Arkansas

i lperennial

Image credit: Dr. John Boyd, Univ of Ark

ground ivy

kansas

lespedezaImage credit: Dr. John Boyd, Univ of A

summer annualArkansas

perennial

Image credit: Dr. John Boyd, Univ of Arblackseed plantain

rkansas

perennial

Image credit: Dr. John Boyd, Univ of Ark

buckhorn plantain

kansas

perennialImage credit: Dr. John Boyd, Univ of Ark

violetkansas

Phase II of MSPhase II of MS For golf courses:

– Spot treatments only (100p y (exceed 25 percent of the tyear O b d t t t t f– One broadcast treatment fonly

For sod farms: For sod farms: – 1-2 broadcast application– 25 foot buffer around per25 foot buffer around per

For highway rights-of-way: – Two broadcast applicatiopp

of-way – 100 foot buffer around pe

SMA Phase OutSMA Phase Out

0 sq feet per spot), not to q p p )total golf course acreage per

f l t t dfor newly constructed courses

ns rmanent water bodiesrmanent water bodies

ns ONLY on highway rights-g y g

ermanent water bodies

Golf Course Sod FaGolf Course Sod FaGolf Course, Sod FaGolf Course, Sod Fa

Sale of MSMA by Registra Sale of MSMA by RegistraDecember 31, 2012;Di ib ll MSMA Distributors can sell MSMA2013.

Use of MSMA on golf courDecember 31, 2013.

arm & Rightarm & Right--ofof--WayWayarm & Rightarm & Right ofof WayWay

ants is prohibited afterants is prohibited after

A il h l f J 30A until the close of June 30,

rses is prohibited after

Residential ComResidential ComResidential, ComResidential, ComField TuField Tu

Distributors are able to sbefore December 31, 20,2010.

After December 31 201 After December 31, 201MSMA can legally be usresidential commercial aresidential, commercial athey are exhausted, provcomply with the EPA-apcomply with the EPA apof the affected product.

mmerical & Sportsmmerical & Sportsmmerical & Sports mmerical & Sports rf Areasrf Areas

sell products purchased 09, until December 31, , ,

0 existing stocks of0, existing stocks of sed for weed control on and sports field turf untiland sports field turf until

vided that these uses pproved label and labelingpproved label and labeling

New Turf HerbNew Turf Herbbicide Productsbicide Products

CelsCelsCelsCelssiussiussiussius

CelsiuCelsiu From Bayer 68% WG formulation 8.7% Iodosulfuron-methyl so Combined post-emergent conp g

few annual grasses Moderate post brome control p

crabgrass not listed and have n Label claims post sandbur con

it for this use, repeat apps may Labeled for St. Aug, bermuda Do not use on bahia or cool-s

s WGs WG

odium + 1.9% dicambantrol of many broadleaves and a y

and large crabgrass. Small g gnot tried it on smooth crabgrassntrol at high rate, have not tried y be neededa, buffalo, centipede, zoysia.eason grasses

Certainty receives sCertainty receives sl dl dlandscape areas landscape areas

From Monsanto a i is sulfosulfuron a.i. is sulfosulfuron Major use was post-nuts

season turfgrassseason turfgrass Now has supplimental la

/ l fnursery/ornamentals for Over the top post-emerg

of nutsedge in Lirope or

supplimental label in supplimental label in d ld land ornamentalsand ornamentals

sedge control in warm-

abel in icertain uses

gence application/control Monkeygrass

EchelonEchelonEchelonEchelon From FMC Prodiamine + sulfentrazone in Prodiamine + sulfentrazone in 4SC formulation:2.67 lbs prod

sulfentrazone Combined pre and post-emerg

and sedges Post-goosegrass and crabgras

post S d b t t Sedge pre-emergence but not Post control of many broadlea

applicationapplication Label for warm and cool-seas

n 4SCn 4SCn 4SCn 4SC

n 2:1 ration 2:1 ratiodiamine and 1.33 lbs of

gent annual grass, broadleaves

s control is pre and very early

f llfull seasonaves present at time of

son grasses

Dismiss hDismiss hDismiss hDismiss h From FMC

i i S lf a.i. is Sulfentrazone Labeled for residential, golf

d f t fi ld lsod farms, sports fields, plu 4-12 fl oz/A rates

b l d f i l d Labeled for use in cool and Controls a number of sedge

ti d dapps sometimes needed Early post-goosegrass contr Surfactant not recommende

herbicideherbicideherbicideherbicide

f course, commercial lawns, s.

fwarm-season turfgrassess and broadleaf weeds, split

rol, pre-tillerd

KataKata From PBI Gordon a i is flazasulfuron a sulfon a.i. is flazasulfuron, a sulfon 1.5 to 3 oz/A use rate

P b Post-emergent on some broaremoval in bermudagrass, so

Good safety on many bermu Do not use in cool-season tu

anaana

nylureanylurea

dl ll f ladleaves, tall fescue clump ome sedge suppressionudagrasses and zoysaigrasses.urf

OnetOnet From Bayer Quinchlorac + MCPP + dicam 1.5 + 0.75 + 0.2 lbs per gallon 32 fl oz/A use rate Post-emergent crabgrass + wi

weeds Good tolerance but slight disc

zoysiagrass, buffalograss, talld i l St Aand perennial ryegrass. St. Au

Note phytotoxicity increase w21 64 fl /A 21 to 64 fl oz/A use rate

timetime

mban

ide spectrum of broadleaf

coloration of bermudagrasses, l fescue, Kentucky bluegrass

ti i itiugustinegrass is sensitivewith higher temperatures

Q4 PQ4 PQ4 PQ4 P From PBI Gordon a.i. are quinchlorac (0.75 lb),

(0.88 lb) and dicamba (0.10 l Post-emergent crabgrass, earl

nutsedge, post-emergent agaig , p g g Labeled for use in cool-seaso

labeled for dormant applicatilabeled for dormant applicatiand buffalograss

5 7 pints/A use rate 5 – 7 pints/A use rate

PlusPlusPlusPlus

sulfentrazone (0.06 lb), 2,4-D lb per gallon)ly post goosegrass, post inst most broadleaf speciespon grasses. Currently only on to bermuda zoysiagrasson to bermuda, zoysiagrass

SoliSoliSoliSoli From FMC a.i. are Sulfentrazone 18.75% Post-crabgrass post-broadlea Post crabgrass, post broadlea

some pre-emergent control, p See label for rates and specie See label for rates and specie Labeled across most warm an

ispecies 16 to 32 fl oz/A use rate

taretaretaretare

% + quinchlorac 56.25%af early post goosegrassaf, early post goosegrass, post nutsedge controleses.nd cool-season turfgrass

Specticle Specticle Bayer Environmental Science Active ingredient indaziflamg Labeled for most warm seaso

bermuda buffalo centipedebermuda, buffalo, centipede, zoysiagrass.

Do not use on cool season tu Do not use on cool-season tu Pre-emergent for many annua

f d lgoosegrass, tufted lovegrass, 2.5 to 5 fl oz/A use rate

20 WSP20 WSPe

on turfgrasses including bahia, St Augustine andSt. Augustine, and

rfgrassesrfgrassesal grasses including crabgrass,

d l b dland many annual broadleaves.

TenaTenaTenaTena From Syngenta

i i i a.i. is mesotrione Labeled for use in post-crab

b dl i l tbroadleaves in cool-season t Not for use in bermuda or z

li bl hi Foliar bleaching symptoms See label for various restrict Labeled for a number of tur

only on cool-season lawns 4 – 8 fl oz/A use rate, seque

acityacityacityacity

bgrass and some pre/post t fturfoysiagrass

f i i iof sensitive speciestions

rf use sites but spot treatments

ential application allowed.

TowTowTowTow From BASF Active ingredient Dimethen 6 lbs ai/gallon g Not currently labeled for law Currently turf usage is for G Currently turf usage is for G

a supplimental label, not on P f Pre-emergent for spurge, go

21 – 32 fl oz/A in up to 2 sp

werwerwer wer

namid-P

wns, grounds or sports fieldsGolf Course Turf only throughGolf Course Turf only, through

putting greensl doosegrass, annual sedges

plit applications

QuestQuest

This presentation will bewww.turf.okstate.edu sh

tions?tions?

e mounted to the web at hortly.y