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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2009 Proceedings-SWSS.pdf#page=545
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Blanton, R. |
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| Author Affiliation: | Entolology [Entomology], Soils & Plant Sci, Clemson University, Clemson, SC |
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| Title: | Postemergence annual bluegrass control and preemergence crabgrass control with February application |
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| Section: | Horticultural crops
Other records with the "Horticultural crops" Section
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| Meeting Info.: | Orlando, Florida: February 9-12, 2009 |
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| Source: | 2009 Proceedings, Southern Weed Science Society. Vol. 62, 2009, p. 475. |
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| Publishing Information: | Champaign, Illinois: Southern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Application timing; Digitaria; Diquat dibromide; Foramsulfuron; Glufosinate; Glyphosate; Herbicide combinations; Poa annua; Postemergence weed control; Preemergence weed control; Prodiamine; Simazine; Trifloxysulfuron
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| Trade Names: | Reward; Barricade; Roundup; Finale; Revolver; Monument; Princep |
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| Abstract/Contents: | "Annual Bluegrass is a cool season grass native to Europe and is a troublesome, bunch- grass weed in most turfgrass situations. It is the most troublesome winter annual grass weed on golf courses. Its prolific seed production capability disrupts the appearance and uniformity of the turf stand. It has a competitive growth habit and has poor heat and disease tolerance, which often leaves bare or thin areas in the turf. Crabgrass is a summer annual that reproduces primarily by seeds and is low-growing, which makes control by mowing difficult. Crabgrass is tolerant of hot, dry, compacted soils after establishment, and may spread aggressively to crowd out desirable grasses. In February 2008, a study was conducted to evaluate the efficacy of several combinations of herbicides for postemergent annual bluegrass and preemergent crabgrass control. Initial applications were made on February 8, 2008 followed by sequential applications 60 days after initial treatments (DAIT). The study, located in Pickens County, SC at Clemson University was conducted on a Tifway Bermudagrass experimental turf plot with a history of crabgrass infestation. Plot size measured 2.0 m by 3.0 m, replicated three times. Treatments were applied using a CO2 backpack sprayer calibrated at 20 GPA, at 30 p.s.i., with 8003 flat fan spray tips. Treatments were: Reward (diquat) at 0.93 lb ai/A + Barricade (prodiamine) at 0 .5 lb ai/A (Initial) followed by Barricade at 0.5 lb ai/A 60 DAIT; Roundup (glyphosate) at 0.5 lb ai/A + Barricade at 0 .5 lb ai/A (Initial) followed by Barricade at 0.5 lb ai/A 60 DAIT; Finale (glufosinate) at 1.5 lb ai/A + Barricade at 0.5 lb ai/A followed by Barricade at 0.5 lb ai/A 60 DAIT; Revolver (foramsulfuron) at 0.025 lb ai/A + Barricade at 0 .5 lb ai/A (Initial) followed by Barricade at 0.5 lb ai/A 60 DAIT; Monument (trifloxysulfuron) at 0.03lb ai/a + Barricade at 0 .5 lb ai/A + non-ionic surfactant at 0.25% V/V (Initial) followed by Barricade at 0.5 lb ai/A 60 DAIT; Princep (simazine) at 2lb ai/A + Barricade at 0 .5 lb ai/A (Initial) followed by Barricade at 0.5 lb ai/A 60 DAIT; Barricade alone at 0 .5 lb ai/A (Initial); and Barricade at 0 .5 lb ai/A (Initial) followed by Barricade at 0 .5 lb ai/A. Ratings taken throughout the study included annual bluegrass and crabgrass control on a 0 to 100% scale, where 0 = no control and 100 = complete control. Tifway Bermudagrass phytotoxicity was rated on a 0 to 100% scale, where 0 = no injury and 100 = dead turf. Thirty percent was deemed the maximum acceptable level of turf injury. With the preemergent crabgrass study, on July 30, 2008 (173 DAIT) and for the remainder of the study, control was observed to be 70-73%. Roundup + Barricade (Initial) followed by Barricade 60 DAIT, Revolver + Barricade (Initial) followed by Barricade 60 DAIT, and Princep + Barricade (Initial) followed by Barricade 60 DAIT provided 73% control for the remainder of the study. Turf injury was minimal. Future research at Clemson University will be to evaluate new and existing herbicides for postemergence annual bluegrass and preemergence crabgrass control. We will also evaluate various herbicide combinations, rates, and timings for improved annual bluegrass and crabgrass efficacy." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Blanton, R. 2009. Postemergence annual bluegrass control and preemergence crabgrass control with February application. South. Weed Sci. Soc. Proc. 62:p. 475. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2009 Proceedings-SWSS.pdf#page=545
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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