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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2003%20Proceedings-SWSS.pdf#page=248
Last checked: 07/15/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Faircloth, W. H.;
Patterson, M. G.;
Teem, D. H.;
Miller, J. H. |
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| Author Affiliation: | Faircloth, Patterson and Teem: Auburn University; Miller: U.S. Forest Service, Southern Research Station, Auburn, AL |
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| Title: | Cogongrass (Imperata cylindrica): Management tactics on rights-of-way |
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| Section: | Utility, railroad and highway right-of-way and industrial sites
Other records with the "Utility, railroad and highway right-of-way and industrial sites" Section
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| Meeting Info.: | Houston, Texas: January 27-29, 2003 |
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| Source: | Proceedings: Southern Weed Science Society: 56th Annual Meeting. Vol. 56, 2003, p. 162. |
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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: Chemical weed control; Evaluations; Imperata cylindrica; Revegetation plants; Rights-of-way; Weed control
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| Abstract/Contents: | "Cogongrass [Imperata cylindrical (L.) Beauv] is a non-native plant rapidly invading right-of-way areas throughout the Gulf coastal plain of Alabama. Cogongrass is an undesired species on highway rights-of-way due to its displacement of native and/or more manageable grasses, unsightly growth characteristic, and propensity for fire which not only poses a danger to motorists but could cause property loss to adjoining landowners. In addition, rights-of-way provide corridors to uninfested areas, therefore, expanding the range of this noxious plant. As one phase of a comprehensive cogongrass management effort, studies were begun in Alabama in the fall of 2000 to study economical methods of cogongrass control in right-of-way areas. Two projects were located on Interstate 10 in Baldwin Co., near the towns of Loxley (est. 2000) and Malbis (est. 2001). Both projects integrated chemical control with the revegetation of more desirable grass species. Herbicides used in cluded glyphosate (2.2 lb ae/A), imazapyr (0. 75 lb ai/A), and glyphosate plus imazapyr at 1/2 x rates. Replacement species were bahiagrass (Paspalum notatum var. Pensacola), common bermudagrass (Cynodon dactylon ), and browntop millet (Panicum ramosum ). Winter cover crops that served as soil stabilizers and also as early season competitors were crimson clover (Trifolium incarnatum var. AU Robin) and annual ryegrass (Lolium multiflorum var. Gulf). Treatments consisted of various combinations of herbicides and replacement plants with four replications: Loxley,14 treatments plus untreated check; Malbis, seven treatments plus untreated check. Studies were established in triplicate such that a time factor could be examined (i.e. all studies treated year one, two of three treated year two, and one treated year three). Plots were 10ft.x25ft. and herbicides applied at 15 GPA with an ATV-mounted CO2 sprayer. Replacement species were broadcast at Loxley and drilled at Malbis. All treatments reduced cogongrass cover significantly from the untreated after one year of treatment, however, cogongrass remained in all plots. Imazapyr, whether alone or tankmixed with glyphosate, gave most consistent control without affecting replacement species. Imazapyr reduced cogongrass populations >80% after two years of continuous treatment. Glyphosate plus imazapyr (fall) followed by (fb) crimson clover (fall) fb glyphosate (spring) fb bahiagrass (spring) gave complete above-ground control with two years continuous treatment. The presence of a winter cover crop reduced the incidence of cogongrass versus no cover. Revegetation with bahiagrass and bermudagrass was not achieved at the Loxley location, but was more effective at the Malbis site, likely due to the drought conditions that persisted from summer 2000 through spring 2001. At least two years of continuous treatment is needed to obtain practical cogongrass control at both locations. A third study was conducted during the summer of 2002 in Mobile Co., near Theodore, to examine the effect of intense mowing, a common form of right-of-way management, on cogongrass. Treatments consisted of a 5 (mowing) by 4 (herbicide) factorial arrangement in a RCB design. Mowing schedules were: 1x/month, 2x/month, 1x/2 months, 1x/3 months, and none. Herbicides were: glyphosate (2.2 lb ae/A) , imazapyr (0.5 lb ai/A), glyphosate applied twice (1.1 lb ae/A), and none. Plots were 10ft.x20ft. and maintained for a 6 month period from May-Oct. A herbicide main effect superceded all other effects or interactions. The split application of glyphosate reduced cogongrass coverage 99% regardless of mowing treatment. Mowing alone decreased cogongrass coverage a maximum of 3%. This study will be continued in 2003." |
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| Language: | English |
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| References: | 0 |
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| Note: | "Invasive weeds: Real or imagined threat?"
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Faircloth, W. H., M. G. Patterson, D. H. Teem, and J. H. Miller. 2003. Cogongrass (Imperata cylindrica): Management tactics on rights-of-way. South. Weed Sci. Soc. Proc. 56:p. 162. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2003%20Proceedings-SWSS.pdf#page=248
Last checked: 07/15/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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