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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=233
Last checked: 08/12/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Beckworth, L. C.;
Byrd, J. D.;
Taylor, J. M.;
Barksdale, N.;
Zaccaro, M. L. |
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| Author Affiliation: | Mississippi State University, Mississippi State, MS |
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| Title: | Evaluation of new herbicides, mowing, and application timing on cogongrass (Imperata cylindrica) stand reduction and control |
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| Section: | Graduate student oral paper contest
Other records with the "Graduate student oral paper contest" Section
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| Meeting Info.: | Houston, Texas: January 28-30, 2013 |
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| Source: | Proceedings of the Southern Weed Science Society: 66th Annual Meeting. Vol. 66, 2013, p. 146. |
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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; Comparisons; Control methods; Herbicide evaluation; Imperata cylindrica; Mowing; Plant density
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| Abstract/Contents: | "Cogongrass (Imperata cylindrical (L.) Beauv.) is a highly invasive grass species that continues to infest forests, pasture, and rights-of-way throughout the southeastern United States. Currently, there are only two herbicides, glyphosate and imazapyr, that provide satisfactory control of cogongrass. Recently, granular formulations of imazapyr, as well as, herbicide combinations with aminocyclopyrachlor, have both been suggested to help control this species. Field trials were established in Forrest County, Mississippi in 2011 to evaluate the effectiveness of these treatments for cogongrass control. A split-plot study was designed to evaluate these treatments on both mown and unmown plots with both summer and fall application timings. Plot size was 3.1 by 6.1 meters, with subplots measuring 3.1 by 3.1 m. Two weeks prior to the applications, the mown subplots were trimmed to 12.7 cm in height. Summer applications were made in June, and fall applications were made in late September. A backpack sprayer was used to apply the liquid treatments and a 0.5 liter shaker, with calibration blanks to aid in even distribution, was used to distribute granular formulations. Treatments applied were 120 + 40 g ai/ha soluble granule (SG) aminocyclopyrachlor + (SG) metsulfuron methyl with 1% v/v MSO, 87 + 35 g ai/ha (SG) aminocyclopyrachlor + (SG) chlorsulfuron and 1% v/v MSO, 101 + 73 + 26 g ai/ha (SG) imazapyr + (SG) aminocyclopyrachlor +(SG) metsulfuron methyl and 1% v/v MSO, 315 g ai/ha liquid (L) aminocyclopyrachlorand 1% v/v MSO, 315 g ai/ha (SG) aminocyclopyrachlor and 1% v/v MSO, 140 + 1064 g ai or ae/ha (SG) aminocyclopyrachlor + 2,4-D amine and 1% v/v MSO, 140 + 280 g ai or ae/ha (SG) aminocyclopyrachlor + triclopyr ester and 1% v/v MSO, 840 g ai/ha (L) imazapyr and 1% v/v MSO, 1120 g ae/ha potassium salt of glyphosate and 840 g ai/ha granular (G) imazapyr. Visual evaluation of the plots began 1 month after treatment (MAT) and was continued until 15 MAT. Shoot height was measured at application, 12 MAT, and 15 MAT. Culm density was measured using a 930 cm2 quadrat. Density measurements were taken at application, 1 MAT, and 15 MAT. Rhizome biomass samples were also collected dried and weighed. In all subplots that were mown, significant reductions in shoot heights were present at 12 MAT. Fall applications of (L) imazapyr, glyphosate,(G) imazapyr, and (SG) aminocyclopyrachlor +(SG) imazapyr + (SG) metsulfuron greatest level of visual control for both mown and unmown plot, as well as providing the greatest reduction in culm densities. Rhizome biomass data was inconclusive." |
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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):
Beckworth, L. C., J. D. Byrd, J. M. Taylor, N. Barksdale, and M. L. Zaccaro. 2013. Evaluation of new herbicides, mowing, and application timing on cogongrass (Imperata cylindrica) stand reduction and control. South. Weed Sci. Soc. Proc. 66:p. 146. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=233
Last checked: 08/12/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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