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	Full TGIF Record # 325013 Item 1 of 1
Web URL(s):	https://scisoc.confex.com/scisoc/2022am/meetingapp.cgi/Paper/144811     Last checked: 01/31/2023     Requires: JavaScript; HTML5
Publication Type:	Report
Content Type:	Abstract or Summary only
Author(s):	Joseph, Mikerly; Harris, James; McElroy, J. Scott
Author Affiliation:	Joseph: Presenting Author and Aubrun University; Harris and McElroy: Auburn University
Title:	Response of yellow foxtail (Setaria pumila) and knotroot foxtail (Setaria parviflora) to flucarbazone for possible use in turfgrass
Section:	Turfgrass pest management poster: Diseases, insects, weeds I (includes student competition) Other records with the "Turfgrass pest management poster: Diseases, insects, weeds I (includes student competition)" Section C05 turfgrass science Other records with the "C05 turfgrass science" Section
Meeting Info.:	Baltimore, Maryland: November 6-9, 2022
Source:	ASA, CSSA, SSSA International Annual Meeting. 2022, p. 144811.
Publishing Information:	[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:	1
Keywords:	Author-Supplied Keywords: Knotroot; Yellow; Foxtail; Turfgrass
Abstract/Contents:	"Yellow and knotroot foxtail are problematic weeds infesting golf courses, athletic fields, and lawns with limited control options. Flucarbazone is an acetolactate synthase herbicide labeled to control yellow and green foxtail. However, the activities of flucarbazone on knotroot foxtail and common southern turfgrass species are not fully understood. The efficacy of flucarbazone against yellow and knotroot foxtail was evaluated in a rate-response study. Non-linear regression models were performed to determine the application rate at which 50% (I50) and 90 % ( I90%) of the weed species injury occurred, with an application rate of 0.125X to 8X, where X equals 29.36 g ha-1. We also assessed the tolerance of the centipedegrass, bermudagrass, St. Augustinegrass, and zoysiagrass to flucarbazone (29.36 and 58.72 g ha-1) and thiencarbazone+Dicamba+Iodosulfuron (230 g ha-1) in a greenhouse evaluation. Thiencarbazone+Dicamba+Iodosulfuron was the control herbicides. The results indicate that yellow and knotroot foxtail responded differently to the rate response screens, with knotroot foxtail more challenging to control. The estimated I90 was 7.66288 and 174.96 g hai-1, respectively, for yellow and knotroot foxtail. Flucarbazone injured all the grass species less than 5% at 21 and 28 days after application (DAA), except for St. Augustine grass which was injured by more than 15%. Flucarbazone caused less damage on all the grass species than thiencarbazone+dicamba+iodosulfuron at 28 DAA. Those results suggest that flucarbazone is a viable option for yellow foxtail in southern turfgrass with less control activity on knotroot foxtail. Future research is needed to evaluate the morphological difference between yellow and knotroot foxtail and the flucarbazones control of other grasses in turf. More extensive field trials are needed to assess the response of those turfgrass species to flucarbazone in natural conditions."
Language:	English
References:	0
Note:	"204" This item is an abstract only!
	ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Joseph, M., J. Harris, and J. S. McElroy. 2022. Response of yellow foxtail (Setaria pumila) and knotroot foxtail (Setaria parviflora) to flucarbazone for possible use in turfgrass. Agron. Abr. p. 144811.
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