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1 Wilson County Landscapers January 30, 2004
2 NCSU Turf Website
3 Weed Control With Preemergence Herbicides Herbicides do not prevent weeds from germinating, they kill weeds as they grow through the herbicide treated zone.
4 Weed Control With Preemergence Herbicides Large gaps in herbicide barriers result in weed escapes.
5 PRE Smooth Crabgrass Control With Barricade Treatment Lbs AI/A % Control Nontreated -- 0 Barricade 65 WG Barricade 0.5 G Barricade 0.29 G LSD Experimental Barricade Formulations, Hidden Valley GC, Applied March 4, evaluated Sept. 26
6
7 Size of Particle is Critical
8 Uniformity of Particle Size
9 Coverage with Granular vs Spray
10 Particles Have A Sphere of Influence
11 Particles Have A Sphere of Influence
12 Major Preemergence Crabgrass/Goosegrass Herbicides Dinitroanalines - DNAs: prodiamine (Barricade) oryzalin (Surflan) pendimethalin (Pendulum, Pre-M, etc.) Team Pro (trifluralin + benefin) XL (oryzalin + benefin)
13 Major Preemergence Crabgrass/Goosegrass Herbicides Oxadiazole oxadiazon (Ronstar) Pyridines dithiopyr (Dimension)
14 DNA herbicides can injure stoloniferous turf species that are not well established
15 Turfgrasses may have difficulty rooting where DNA herbicides have been used
16 Ronstar does not inhibit rooting of stoloniferous turf species
17 % Control PRE Control of Crabgrass Pendimeth DG 3 lb ai Pendimeth G 3 lb ai Barricade WG.75 lb ai Ronstar WP 3 lb ai 40 Ronstar G 3 lb ai 20 0 Ratings taken Sept 19. Rates are per acre applied 3-1. Thorndale CC, 2002
18 % Control PRE Control of Crabgrass Surflan L 3 lb ai Dimension Ultra.5 lb ai Regalstar 200 lb Regalstar II 200 lb Team Pro G 3 lb ai 20 0 Ratings taken Sept 19. Rates are per acre applied 3-1. Thorndale CC, 2002
19 % Control PRE Control of Crabgrass Team Pro 2 lb ai + Surflan 1.5 lb ai Team Pro 2+2 lb ai 60 Pendimeth G lb ai 40 Pendimeth lb ai 20 0 Ratings taken Sept 19. Rates are per acre applied 3-1. Thorndale CC, 2002
20 New & Experimental Herbicides foramsulfuron (Revolver) Bayer rimsulfuron (Tranxit) Griffin sulfosulfuron Monsanto Trifloxysulfuron (Monument) Syngenta Flazasulfuron ISK Biotech Velocity Valent Carentrazone (Quicksilver) - FMC
21 New Herbicide foramsulfuron Bayer Trade Name - Revolver
22 Foramsulfuron - Revolver Weeds Controlled: Perennial ryegrass, Poa annua, goosegrass, Maybe: Dallisgrass????
23 Dallisgrass (Paspalum dilatatum)
24 Foramsulfuron - Revolver Dallisgrass: Apply MSMA 2 lbs ai/a Apply Revolver at the spot spray rate 2 wks after MSMA Apply MSMA 2 lbs ai/a when dallisgrass starts to regrow
25 New Herbicide Carfentrazone - FMC Trade Name - Quicksilver
26 Trifloxysulfuron - Monument Weeds Controlled: Yellow nutsedge, purple nutsedge, green kyllinga, Poa annua, Perennial ryegrass, dollarweed, Virginia buttonweed, Lawn burweed, wild violet
27 Spurweed (Soliva pterosperma)
28 Monument Active ingridient: trifloxysulfuron Sulfonylurea developed by Syngenta 75WG formulation Caution signal word
29 Monument Currently labelled for bermudagrass, zoysiagrass, buffalograss, and St. Augustinegrass grown on golf courses, sod farms, athlethic fields, and other non-crop areas including airports and cemetaries Applications include: POST control of many perennial and annual grasses, sedges, and broadleaf weeds
30 Wild Violet (Viola spp.)
31 Field Pansy (Viola rafinesquii)
32 Monument Applications include: POST control of selected annual grasses Transition in spring from overseeded perennial ryegrass to bermudagrass
33 Turfgrass Tolerance to Trifloxysulfuron Common bermudagrass Tifway bermudagrass El Toro & Meyer zoysiagrass Highly Tolerant Common centipedegrass Susceptible
34 And very phytotoxic to perennial ryegrass Metsulfuron is highly water soluble
35 Sedge Control With New Herbicides Sulfonylurea herbicides included: Flazasulfuron (ISK) Manage Monument Sulfosulfuron (Monsanto)
36 Research Trials False green kyllinga (Kyllinga gracillima) Purple nutsedge (Cyperus rotundus) Yellow nutsedge (Cyperus esculentus)
37 Purple and Yellow Nutsedge and False Green Kyllinga Rapidly spreading perennial weed species Commonly found in moist areas
38
39 Purple Nutsedge (Cyperus rotundus)
40 Yellow Nutsedge (Cyperus esculentus)
41 % Control Purple Nutsedge (Cyperus rotundus) Control a 80 80b 86ab 86ab 84ab Monument.35 oz c Monument.47 oz Monument.59 oz Monument.35 oz + Bueno pt Manage 1.27 oz 0 2 WAIT Image 2.67 pt Rates are per acre. Trial initiated All treatments received sequential applied 8-2.
42 % Control Purple Nutsedge (Cyperus rotundus) Control bc 85ab 94a 63d 14 WAIT Monument.35 oz Monument.47 oz Monument.59 oz Monument.35 oz + Bueno pt Manage 1.27 oz Image 2.67 pt Rates are per acre. Trial initiated All treatments received sequential applied cd 63d
43 Purple Nutsedge (Cyperus rotundus)
44 % Control Purple Nutsedge (Cyperus rotundus) Control with Single Application a b Monument.56 oz Manage 1.33 oz 0 12 WAT Rates are per acre. All trts included 0.25% v/v NIS. Trial initiated 6-21.
45 Green Kyllinga (Kyllinga brevifolia) & False Green Kyllinga (K. gracillima)
46 % Control False Green Kyllinga (Kyllinga gracillima) Control a 87 ab Monument.47 oz b 18 WAT Manage 1.33 oz Image + MSMA.5 fb 2 lb ai
47 Poa annua Control Revolver Bayer Tranxit Griffin sulfosulfuron Monsanto Monument Syngenta Flazasulfuron ISK Biotech
48 % Control Poa annua Control in Non- Overseeded Bermudagrass for 18 fl oz for 36 fl oz for 54 fl oz Roundup Pro 1 qt WAT 6 WAT 10 WAT Rates are product per acre applied Poa annua was 0-2 tiller at application. Quail Ridge, 2001
49 % Control Poa annua Control in Non- Overseeded Bermudagrass for 18 fl oz for 36 fl oz for 54 fl oz Roundup Pro 1 qt WAT 4 WAT 8 WAT Rates are product per acre applied Poa annua was 3-8 tiller w/ seedheads at application. Quail Ridge, 2001
50 Nontreated
51 Foramsulfuron 18 fl oz/a
52 Foramsulfuron 36 fl oz/a
53 Foramsulfuron 54 fl oz/a
54 Roundup Pro 1 qt/a
55 % Control Perennial Ryegrass Control for Transition for 9 fl oz for 18 fl oz for 28 fl oz Manor.5 oz Kerb.5 lb ai 0 2 WAT 4 WAT 8 WAT Rates are per acre applied Prestonwood CC, 2001
56 Foramsulfuron 9 fl oz/a Foramsulfuron 18 fl oz/a 3 WAT
57 Foramsulfuron 28 fl oz/a Manor.5 oz/a 3 WAT
58 Kerb.5 lb ai/a Nontreated 3 WAT
59 Perennial Ryegrass (Lolium perenne)
60
61 utc Revolver 0.4 oz
62
63 The best way to control clumpy ryegrass is to prevent it from establishing in nonoverseeded areas
64 Barricade applied at 0.5 lbs ai/a the day before overseeding.
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