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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2010.pdf#page=80
Last checked: 07/22/2013
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Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | McDonald, S. |
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| Author Affiliation: | Turfgrass Disease Solutions, LLC Spring City, PA |
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| Title: | Goosegrass control in fairway height annual bluegrass and perennial rye |
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| Meeting Info.: | Cambridge, MA: January 4-7, 2010 |
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| Source: | Proceedings: 64th Annual Meeting of the NortheasternWeed Science Society. Vol. 64, 2010, p. 64. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Golf fairways; Goosegrass control; Herbicide efficacy; Herbicide evaluation; Lolium perenne; Poa annua
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| Abstract/Contents: | "Goosegrass (Eleusine indica) is a difficult annual grass to control in fairway height cool-season turfgrass. Two trials were conducted on the fourth fairway of Reston National Golf Course, located in Reston, VA. In 2008, the turfgrass was comprised of 80% perennial ryegrass (Lolium perrene) and 20% annual bluegrass (Poa annua). A different portion of the fairway was selected for use in 2009 and was comprised on 80% annua bluegrass and 20% perennial ryegrass. The site was mowed three times per week at 0.50 inches using a reel mower. Treatments were arranged in a randomized complete block design using four replications. Individual plots were 5 ft X 5 ft. Treatments were applied in 50 gallons per acre (468 L per ha) in the late morning with a partially wet canopy. Overhead irrigation was supplied at 1/8 inch following treatment. In 2008, sprayable formulations of oxadiazon, dithiopyr and pendimethalin followed by (FB) granular formulations of dimethenamid were evaluated as pre-emergent treatments. Post emergent treatments of sulfentazone and sulfentrazone tank mixed with fenoxaprop were also evaluated. These treatments were applied on 11 April (pre-emergent), 10 June (sequential) and 24 June (Post). Although the sprayable formulations of oxadiazon did cause injury to the desirable turfgrass at 14 and 45 days following treatment, these materials provided for the highest level of goosegrass control in late summer. Pendimethalin FB granular formulations of dimethenamid, dithiopyr and the post-emergent treatments of sulfentazone and sulfentrazone tank mixed with fenoxaprop did not provide control that should be considered commercially acceptable. Acceptable control should be considered 85% under heavy pressure. In 2009, all treatments were applied at goosegrass pre-emergence on 10 April. Sequential applications were applied on 22 May. These treatments included pendimethalin 1.5 lb ai/A FB pendimethalin at 1.5 lb ai/A; pendimethalin at 1.5 lb ai/A FB dimethenamid at 1.5 lb ai/A; dimethenamid at 1.5 lb ai/A FB dimethenamid at 1.5 lb ai/A; a tank mixture of pendimethalin at 1.5 lb ai/A and dimethenamid at 1.5 lb ai/A; oxadiazon as a sprayable at various rates and formulations with and without a chelated iron source granular oxadiazon, a pre-mixture of prodiamine plus sulfentrazone and dithiopyr. The 2009 data indicate that tank mixing a chelated iron source with liquid formulations of oxadiazon may help to mitigate some of the herbicide induced injury in cool-season turf. Dimethenamid applied alone or in various programs with pendimethalin due cause unacceptable injury to annual bluegrass turf following application. The top performers for goosegrass control were oxadiazon applied as a granular followed by sprayable forumulations at highest rates. All the various pendimethalin, dimethenamid, prodiamine plus sulfentrazone and dithiopyr failed to provide commercially acceptable levels of goosegrass control when applied as a pre-emergent treatment. Future trials with the newer chemistry, dimethenamid, should look at split rates throughout the growing season." |
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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):
McDonald, S. 2010. Goosegrass control in fairway height annual bluegrass and perennial rye. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 64:p. 64. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2010.pdf#page=80
Last checked: 07/22/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 v. 60 |
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