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Response of Perennial Grasses Potentially Used as Filter Strips to Selected Postemergence Herbicides

Published online by Cambridge University Press:  20 January 2017

Alfred Rankins Jr. ,
David R. Shaw  and
Joel Douglas
Alfred Rankins Jr.*
Affiliation:
Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS 39762
David R. Shaw
Affiliation:
Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS 39762
Joel Douglas
Affiliation:
USDA Natural Resources Conservation Service Jamie Whitten Plant Materials Center, Coffeeville, MS 38922-9263
*
Corresponding author's E-mail: arankins@pss.msstate.edu
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Abstract

Recent research at Mississippi State has shown that eastern gamagrass, switchgrass, and tall fescue grown as filter strips reduce herbicide losses in runoff from cotton. Field experiments were conducted in 1997 and 1998 to evaluate the response of these perennial grasses to postemergence drift and registered rates of glyphosate and paraquat in mid-April and clethodim, fluazifop-P, glyphosate, MSMA, pyrithiobac, quizalofop-P, and sethoxydim in early June. Results indicate that filter strip implementation will not simply involve establishment and maintenance. In most instances, reductions in harvested biomass were as high or higher than visual injury assessments in mid-June. This finding suggests an inability of these perennial grasses to recover from an accidental overspray or drift, within the year of the event. Management decisions must be made to protect the filter strips from contact with herbicides used in the production system to ensure filter strip integrity and survival.

Keywords

Clethodimfluazifop-PglyphosateMSMAparaquatpyrithiobacquizalofop-Psethoxydimeastern gamagrass, Tripsacum dactyloides L.switchgrass, Panicum virgatum L. # PANVItall fescue, Festuca arundinacea Schreb. # FESARcotton, Gossypium hirsutum L. # GOSHIDrift ratesfilter strip integrityrunoffPOSTpostemergence
Type
Research Article
Information
Weed Technology , Volume 19 , Issue 1 , March 2005 , pp. 73 - 77
Copyright
Copyright © Weed Science Society of America 

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