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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Rankins, A. Jr.;
Shaw, D. R.;
Boyette, M.;
Arnold, J. C. |
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| Author Affiliation: | Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS |
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| Title: | Effectiveness of perennial grasses for reducing herbicide and sediment losses in surface runoff |
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| Meeting Info.: | 51st Annual Meeting, Birmingham, AL, January 26-28, 1998 |
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| Source: | Southern Weed Science Society Proceedings. Vol. 51, January 1998, p. 250-51. |
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| Publishing Information: | Champaign, IL: Southern Weed Science Society. |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Herbicides; Fate; Sediment control; Surface runoff; Filter strips; Species trials; Arundo donax; Tripsacum dactyloides; Andropogon gerardii; Panicum virgatum; Festuca arundinacea; Fluometuron; Norflurazon; Agriculture
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| Abstract/Contents: | "Growing concerns of ground and surface water contamination has stimulated interest in filter strip use, as a best management practice for reducing the off-site movement of agrochemicals. Researchers have found that tall fescue (Festuca arundinacea Shreb.) filter strips effectively reduce sediment and herbicide losses in surface runoff. However, an array of choices for filter strip species is needed to broaden the utility of this technology due to morphological and physiological limitations of the filter strip species. Field studies were conducted in 1996 and 1997 at Brooksville, MS, to evaluate the effectiveness of giant reed (Arundo donox L.), eastern gammagrass (Tripsacum dactyloides L.), big bluestem (Andropogon gerardii Vitman), switchgrass (Panicum virgatum L.), and tall fescue for reducing sediment, fluometuron, and norflurazon losses in surface runoff. Cotton (Gossypium hirsutum L.) was planted in 4 x 22 m erosion plots, and fluometuron and norflurazon were each applied PRE at 1.68 kg/ha. Treatments consisted of a 0.3 m filter stip of each species and an untreated check with no filter strip. A rainfall simulator was used to supplement natural rainfall as needed to provide timely runoff events. Following each runoff event, runoff samples were collected from each plot and stored at 2 C until HPLC analysis. Sampling continued for 84 days after herbicide applications on July 10 and June 26 in 1996 and 1997, respectively. Sediment and herbicide loss data from both years were subjected to regression analysis to describe loss patterns, and the slope equality of regression equations were used to determine treatment differences. Across years, slope comparisons showed no difference in sediment, fluometron, and norflurazon loss patterns in runoff among filter strip species. However, the presence of a filter strip reduced cumulative runoff and sediment losses by at least 52 and 77%, respectively, when compared to the untreated check with no filter strip. Fluometuron and norflurazon concentration in runoff and losses were highest in the initial runoff events. By 84 d after treatment, filter strips reduced cumulative fluometuron and norflurazon losses in runoff by 66 to 84% and 70 to 83%, respectively. These results suggest that giant reed, eastern gammagrass, big bluestem, switchgrass, and tall fescue filter strips can each be best management practices for reducing sediment and herbicide losses in surface runoff." |
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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):
Rankins, A. Jr., D. R. Shaw, M. Boyette, and J. C. Arnold. 1998. Effectiveness of perennial grasses for reducing herbicide and sediment losses in surface runoff. South. Weed Sci. Soc. Proc. 51:p. 250-51. |
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MSU catalog number: SB 611 .S6 v.51 |
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