TURF ORN WEED CONT
TURF ORN WEED CONT CS 053
Popular in Course
Popular in Crop and Soil Sciences
verified elite notetaker
This 61 page Class Notes was uploaded by Demarco Hansen on Thursday October 15, 2015. The Class Notes belongs to CS 053 at North Carolina State University taught by Leon Warren in Fall. Since its upload, it has received 51 views. For similar materials see /class/223659/cs-053-north-carolina-state-university in Crop and Soil Sciences at North Carolina State University.
Reviews for TURF ORN WEED CONT
Report this Material
What is Karma?
Karma is the currency of StudySoup.
Date Created: 10/15/15
Tough to Kill Weeds 5Perennial weeds EKEVines annual and perennial 5Controlled only at certain growth stages Weeds not controlled by glyphosate Perennial weeds reproduce by 39 39y Stolons Weedy Vines I Cannot selectively spray riiDif cult to hand remove L Virginia creeper Ivyleaf Morningglory Ipomoea hederacea 3 Hard to control summer annual Vine Germinates early summer Butter yshaped cotyledons Deeply 3lobed alternate leaves Optimum timing to treat with RoundupPro Weed Species Suggested application Solution timing for best control Trumpetcreeper 15 Late smmertoearly fall Vnginiacreeper 1 Late summerto 1 t fall color Poison ivy 2 lll bloom E summer Mugwort 2 Late summer to early fall Japanese knotweed 2 Late summerto early fall Greenbn39ar 3 ea y sp ng 5 Isms Pokeweed Phytolacca americana Seedpropagated perennial E Not well controlled by glyphosate Poisonous but edible if prepared correctly Controlling Hard to Kill Weeds 53Sarmation prevent introduction and spread Select the right tools herbicides or other options Eis ETreat at the best time Ex EDon t give up Most of these weeds require multiyear efforts Vetches Vicia spp fWinter annuals some perennial species SEPERelatiVely difficult to control S EiGerminate in fall or early spring Climbs by tendrils Fabaceae Legume Family Controlling annual weeds iMulch 5Select the best preemergence herbicide for the site 53Sanitation Keep them from going to seed Parasitic annual 5Yellow to orange 39 I Vining stems Y EiSeed propagated Dodder control EiSanitation 553Prevent introduction EiRemove plants before they ower Eston t try to hand weed just the dodder remove the host too E Plant resistant ornamentals EEDacthal is back Yellow and Purple Nutsedges Cyperus spp F fvEGrasslike but Sedges have edges 7 triangular stems A Senesao Eg Leaves emerge 3ranked Spread by rhizomes and overwinter as tubers EgTubers often introduced in 5 top soil Yellow Nutsedge Cyperus esculentus Pa Perennial with rhizomes and tubers gEmerge in late spring die in the fall FfE Daughter plants and tubers formed at tips of rhizomes 5 One plant can form as many as 6000 tubers PurpleNutsedge C yperus rotundus Rhizomatous and tuberous perennial Emerge in midspring die in the fall Forms tubers within 6 weeks of emergence V I Very hard to control m 51The world s worst quot 7 weed Yellow VS Purple Leaf tips Yellow nutsedge leaf tips taper to a long narrow point Yellow j Purple Purple nutsedge leaf tips rare pointed but not tapered Purple 01quot raddis Yellow fading to tan brown turning black a Yellow nutsedge control E Preemergence control with Pennant Magnum or Freehand E Selective POST control with Basagran or Sedgehammer EwiPOST control with Roundup or Finale Pennant Magnum EC metolachlor yellow nutsedge and annual grass control 5G no longer available iApply Pennant EC before budbreak to avoid foliar injury quot2 to 3 months residual Reapply as directed spray Freehand 175G dimethenamidp pendimethalin EEPreemergence control of annual grasses and small seeded broadleaf weeds Suppression of yellow nutsedge 5 Safe on most woody ornamentals F iiHerbaceous plants New for 2008 POST Yellow Nutsedge Control 33Basagran TO directed applications to most woody ornamentals except taxus sycamore amp rhododendron iiiSedgeharnmer directed applications around woody ornamentals Basagran TO bentazon lliControls yellow nutsedge and annual sedges 5Not effective on Purple nutsedge or kyllinga EEEAlso controls many seedling broadleaf weeds incl day ower smartweed ragweed amp pigweed Basagran TO bentazon E Use l to 2 lb aiA 2 applications 14 day interval EwiDirected applications around woody ornamentals Fr Silnjury reported on Rhododendron sycamore and taxus Sedgehammer halosulfuron giSelective Post control of sedges 0 yellow amp purple nutsedge oannual sedges ocertain kyllinga species 5 Apply to young nutsedge reapply in 6 weeks Sedgehammer halosulfuron 5 Safe on turf iDirected applications around woody ornamentals fi njury to contacted foliage Siglnjury to taxus Rhododendron amp arborvitae f V Purple Nutsedge Control Pennant or Basagran E ESedgehammer will require 3 applic at 4 to 6 week intervals Ef lmage requires 3 applications but injures many ornamentals Image imazaquin Pre and Post control of yellow and purple nutsedge in warmseason turf and around SOlVIE woody ornamentals 5 Treat in late spring and retreat 6 weeks later and again if needed DAMAGE to nonlabeled woody ornamentals such as river birch azalea leyland cypress Viburnum ligustrum EiFoliar and Root Uptake Image stunts 39 new growth Treatedggg 5 UriTreated Root uptake from directed applications Plants typically recover in about 8 weeks Why bother E lmage causes signi cant injury to ornamentals from root uptake EiiiBasagran amp Manage must be applied as directed sprays 380 why not just use Roundup or Finale Other Options iiRoundup amp Finale Repeat applications when new growth is observed E EBiobarrier Tre an impregnated fabric can hold back purple and yellow nutsedge Selective Methods to Use NonSelective Herbicides Directed applicatpggpg EWipers rope paint roller or sponge type devices Just wipe the weeds when they are taller than the ornainentals BiobarIier An Alternative Geotextile fabric impregnated With tri uralin Prevents most weeds from growing through the fabric Identi cation and Control of Nutsedges in Landscape Plantings See Horticulture Information Lea et Number 647 Study Questions 1 Describe three strategies for controlling yellow nutsedge in woody landscape plantings ie PRE POST Selective POST nonselective Be speci c products application timing and frequency of application Of the herbicides discussed in lecture which preemergence and postemergence herbicides are effective on 0 Yellow nutsedge only 0 Yellow nutsedge and purple nutsedge In a planting of annual bedding plants what can be done to control yellow nutsedge In a planting of annual bedding plants what can be done to control purple nutsedge Hard to control Weeds cont Perennial broadleaf weeds iMquOI t iFlorida betony iBamboo iDollarweed iBindweed iWOOdy weeds MquOI t 0r Chrysanthemu Weed Artemisia vulgaris ETEiPerennial W rhizomes Mugwort Control 53RoundupPro in May and August for two years fiiiLontrel in May is somewhat effective but needs to be reapplied whenever new growth is present EECasoron provides temporary control but needs to be paired with August Roundup Pennywort or Dollar Weed Hydrocolyle spp Spreading perennials Several species Spread by stolons rhizomes seed and occasionally by tubers Petiole in the center of the leaf Pennywort Control Eilmage applied in the spring Reapply 6 weeks later at ilmage can injure many omamentals from root uptake so use it only on labeled species iRoundup is not very effective EiCasoron provides temporary suppression but dissipates by the time pennywort is growing vigorously quot1 a5 Spreading perennial Square stems Rhizomes and rattlesnake tubers K K through late spring dormant in the summer M Florida Betony Control ii Winter application of Casoron Two Years in a row Supplement with RoundupPro as needed Alternative oRoundup Pro in the spring and fall for two years can provide up to 90 control FwEftTreat Turf and Landscape infestations w w lf these options are not possible 7 Fumigate Bamboo f 0ne of the hardest to kill landscape weeds EEPerennial with rhizomes growing to 18 inches depth mMany native and introduced species EEGrass family Controlling bamboo a f39iMultiyear effort is required EiRemove as much of the rhizome mat as possible iiCasoron in the Winter followed by Roundup throughout the summer EESpot spray With Fusilade or Envoy to suppress When above is not possible PrePost Weed Control With Casoron Ew39sriSafe on certain established trees amp shrubs iControls many perennial hardtokill weeds E39ESigni cant potential to injure nonlabeled species including hemlock r amp spruce EiApply in late fall or early Winter 557Residual lasts until early summer Casoron controls perennial weeds but can kill many ornamentals 39 quot z lw h I 1 H w VV Casomn diclobenil cont 5 Weeds controlled most herbaceous perennials and winter annuals including dandelion red sorrel clover mugwort Fl Betony etc Ei39EWeeds suppressed bindweed nutsedge quackgrass and other perennial grasses EiWeeds not controlled most woody weeds such as black locust sprouts mulberry catbriar brambles and late germinating summer annuals ELEApply in late fall or early winter Postemergence Herbicide Use Sites Ibrbicide Tree amp Ground Annual Perennials Shmbbeds com Flmvers Casotm Few No No D39quat directed No No No Finale directed No No No Roundup directed W1per No No Scythe directed No No No Goal lBasagan directed Few No No my Hedge Bindweed Calyslegia sepium White morningglorylike 7 I owers amp tr1angular leaves 1 herbaceous perennial Sprouts from if trailing Vining stem rhizomes in early spreads by creeping roots Spnng Field Bindweed C onvolvulus arvensis Reproduces by seed and creeping 39 roots 3 Vining h rbaceous perennial Arrowheadshaped leaves Leaves lobed hastate at base Bindweed Control 39 iHerbaceous perennial late summer is optimum time to apply RoundupPro 5Multiple years treatment Will be required EgCasoron provides suppression through early summer EELontrel not very effective EniGeotextile fabric impregnated with tri uralin E39sfiPrevents most weeds from growing through the fabric Woody weeds not well controlled by Casoron or glyphosate I b quot l u Green Poison ivy T oxidendron radican 39 Woody Vine 3Leaves 3 let it be Allergic dermatitis caused by urushiol in al plant parts Even dead stems Spread by birds that eat fruit and drop seeds Greenbriar or Catbriar Smilax spp Several species of semi evergreen woody Vines Very hard to control Sharp prickles Tendrils Japanese Honeysuckle Lonicerajaponica r iiiImported semi evergreen woody Vine E EFragrant and attractive owers Eilnvasive in landscapes and pubhc lands Oriental bittersweet Celastrus orbiculatus Imported woody Vine Spreading in public lands and landscapes 39 Imported for the Similar to and displacing macaw mutequot native American bittersweet fruit Woody Weeds 5 Deciduous plants RoundupPro in late summer or early fall EEvergreens RoundupPro in the spring when plants have 2 to 4 new leaves EggTriclopyr BrushBGone amp others in the spring on new growth This is a brush killer so use carefully around ornamentals FEClipper applications with Roundup or triclopyr Selective Methods to Use NonSelective Herbicides 5 Directed applications Avoid spraying green tissues 5Wipers rope paint roller 0r sponge type devices Just wipe the weeds when they are taller than the ornamentals iClippers wet clippers in RoundupPro and clip the weed Do not use RoundupPro over ornamentals Selective Methods to Use Non Selective Herbicides gift 39 gt d a mlicz atims ipers rope paint roller or sponge type devices Just Wipe the weeds when they are taller than the ornamentals KlipKleen Clippers 5 to 10 VV or Dip n Clip RoundupPro g 77 or Brush B Gone in water Clip close to the ground Works with other systemic herbicides Controlling Hard to Kill Weeds 53Sanitation prevent introduction and spread Select the right tools herbicides or other options Eis ETreat at the best time Ex EDon t give up Most of these weeds require multiyear efforts