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| Web URL(s): | https://scisoc.confex.com/scisoc/2016am/webprogram/Paper99032.html
Last checked: 11/21/2016 |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Yu, Jialin;
McCullough, Patrick E.;
Czarnota, Mark |
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| Author Affiliation: | Yu and Czarnota: University of Georgia, Griffin, GA; McCullough: University of Georgia - Griffin, Griffin, GA |
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| Title: | Pronamide resistant annual bluegrass confirmed in Georgia |
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| Section: | Turfgrass management: Weeds
Other records with the "Turfgrass management: Weeds" Section
C05 turfgrass science
Other records with the "C05 turfgrass science" Section
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| Meeting Info.: | Phoenix, Arizona: November 6-9, 2016 |
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| Source: | ASA, CSSA and SSSA International Annual Meetings. 2016, p. 99032. |
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| Publishing Information: | [Milwaukee, Wisconsin]: [American Society of Agronomy and the Entomological Society of America] |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Application rates; Application timing; Biotypes; Herbicide resistance; Mechanism of resistance; Poa annua; Pronamide
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| Geographic Terms: | Georgia |
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| Abstract/Contents: | "A biotype of annual bluegrass with suspected resistance to pronamide was identified on a golf course in Georgia. The objectives of this research were to determine the level of resistance to pronamide and the mechanisms associated with resistance. From postemergence applications, the pronamide rate that reduced shoot biomass 50% from the nontreated measured >10-times higher for the resistant (R)-biotype as compared to susceptible (S)-biotypes. The R-biotype was not controlled by preemergence applications of dithiopyr or prodiamine, but was controlled >92% by PRE applications of pronamide at 0.56 and 1.68 kg ha-1. Mature plants (3 to 5-tiller) of the R-biotype absorbed 32% less 14C-pronamide than the S-biotype after 72 h in hydroponic culture and accumulated 39% less Bq g-1 of dry shoot mass. The R-biotype metabolized 14C-pronamide similar to the S-biotype, averaging 16% of the extracted radioactivity. The resistance to POST pronamide applications in the R-biotype is associated with reduced absorption and translocation from the S-biotype. This is the first report of pronamide-resistant annual bluegrass." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only!
"103-2" |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Yu, J., P. E. McCullough, and M. Czarnota. 2016. Pronamide resistant annual bluegrass confirmed in Georgia. Agron. Abr. p. 99032. |
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Last checked: 11/21/2016 |
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