Full TGIF Record # 309444
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Web URL(s):https://scisoc.confex.com/scisoc/2019am/meetingapp.cgi/Paper/121313
    Last checked: 01/13/2020
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Russell, Travis R.; Lulis, Tim; Aynardi, Brian; Tang, Kaiyuan; Kaminski, John E.
Author Affiliation:Russell, Lulis, Tang, and Kaminski: Plant Science, The Pennsylvania State University, University Park, PA; Aynardi: PBI-Gordon Corp., Bellefonte, PA
Title:2,4-D-resistant buckhorn plantain (Plantago lanceolata) in Pennsylvania and alternative control options
Section:C05 turfgrass science
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Turfgrass pest management oral 1 (includes student competition)
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Meeting Info.:San Antonio, Texas: November 10-13, 2019
Source:ASA, CSSA and SSSA International Annual Meetings. 2019, p. 121313.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Keywords:TIC Keywords: 2,4-D; Auxins; Cultivar evaluation; Herbicide resistance; Mechanism of resistance; Plantago lanceolata; Weed control
Geographic Terms:Pennsylvania
Abstract/Contents:"Two buckhorn plantain populations in central Pennsylvania were purported to be resistant to herbicide applications containing 2,4-D after long term use of the active ingredient. The objectives of this study were to confirm and assess 2,4-D resistance and to evaluate buckhorn plantain control with additional synthetic auxin herbicides from different chemical families. Suspected resistant and susceptible buckhorn plantain populations were screened against eight concentrations of 2,4-D (phenoxycarboxylic acid) and halauxifen-methyl (arylpicolinate) in dose-response experiments. Buckhorn plantain populations were evaluated for epinasty, necrosis, chlorophyll content index, fresh/dry weight, and plant regrowth during separate greenhouse experiments in 2018 and 2019. Concentrations of 2,4-D that resulted in 50% necrosis were more than 10 times greater for suspected resistant populations compared to susceptible populations. Comparatively, necessary halauxifen-methyl concentrations were similar for both populations. Field trials evaluated buckhorn plantain control with synthetic auxin herbicides from differing chemical families as individual or multiple active ingredient treatments in each population. Treatments containing 2,4-D and other phenoxycarboxylic acid herbicides (MCPA and mecoprop) provided acceptable control in susceptible populations (>75%) and poor control (<36%) in resistant populations. Products containing dicamba (benzoic acid) provided poor control and did not differ between populations. Buckhorn treated with halauxifen-methyl (arylpicolinate) resulted in excellent control (>98%) in resistant and susceptible populations. This is the first report of buckhorn plantain resistance to 2,4-D in Pennsylvania and confirms previous reports that the resistance mechanism is restricted to phenoxycarboxylic chemical family of synthetic auxin herbicides."
See Also:See also related article "Alternative control options for 2,4-D-resistant buckhorn plantain" Golf Course Management, 88(1) January 2020, p. 135, R=309992. R=309992
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Russell, T. R., T. Lulis, B. Aynardi, K. Tang, and J. E. Kaminski. 2019. 2,4-D-resistant buckhorn plantain (Plantago lanceolata) in Pennsylvania and alternative control options. Agron. Abr. p. 121313.
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