Full TGIF Record # 241573
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DOI:10.2134/agronj13.0366
Web URL(s):https://dl.sciencesocieties.org/publications/aj/articles/106/3/844
    Last checked: 11/02/2016
    Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/aj/pdfs/106/3/844
    Last checked: 11/04/2016
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    Access conditions: Item is within a limited-access website
Publication Type:
i
Refereed
Author(s):Gómez de Barreda, Diego; Sidhu, Sudeep S.; Yu, Jialin; Reed, Thomas V; McCullough, Patrick E.
Author Affiliation:Dep. of Crop and Soil Sciences, Univ. of Georgia, Griffin, GA
Title:Dithiopyr efficacy, absorption, and fate in annual bluegrass, goosegrass, smooth crabgrass, and tall fescue
Section:Agronomy soils & environmental quality
Other records with the "Agronomy soils & environmental quality" Section
Source:Agronomy Journal. Vol. 106, No. 3, May/June 2014, p. 844-850.
Publishing Information:Madison, Wisconsin: American Society of Agronomy
# of Pages:7
Related Web URL:https://dl.sciencesocieties.org/publications/aj/abstracts/106/3/844
    Last checked: 11/03/2016
    Access conditions: Item is within a limited-access website
    Notes: Abstract only
Keywords:TIC Keywords: Application timing; Digitaria ischaemum; Dithiopyr; Eleusine indica; Festuca arundinacea; Herbicide evaluation; Poa annua control; Postemergence weed control
Abstract/Contents:"Dithiopyr provides pre- and early postemergence (POST) control of smooth crabgrass [Digitaria ischaemum (Schreb.) Schreb. ex Muhl] in tall fescue (Festuca arundinacea Schreb.), and may allow greater application flexibility in spring than other herbicides. Dithiopyr also provides preemergence (PRE) control of annual bluegrass (Poa annua L.) and goosegrass [Eleusine indica (L.) Gaertn.], but POST applications are ineffective and may result from differential physiological fate compared to smooth crabgrass. Experiments were conducted to investigate efficacy, absorption, distribution, and metabolism of dithiopyr in annual bluegrass, goosegrass, smooth crabgrass, and tall fescue. From seven dithiopyr rates, 1.18, 1.03, 0.76, and >4.48 kg a.i. ha-1 were required to reduce shoot mass 50% from the nontreated for annual bluegrass, goosegrass, smooth crabgrass, and tall fescue, respectively. In laboratory experiments, smooth crabgrass had ≅75% more kBq kg-1 following root absorption of 14C-dithiopyr than annual bluegrass, goosegrass, and tall fescue after 72 h. All species recovered >90% of foliar-absorbed 14C in the treated leaf after 72 h, with limited 14C recovery (≤=5%) in roots and nontreated shoots. Metabolism of dithiopyr increased from 1 to 7 d after treatment (DAT) in all grasses. Final metabolism measured 69, 52, 33, and 27% of total 14C recovered in smooth crabgrass, goosegrass, annual bluegrass, and tall fescue, respectively. Results suggest relative herbicide concentration and greater metabolism is associated with dithiopyr selectivity for POST control of smooth crabgrass compared to other grassy weeds in turf."
Language:English
References:40
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gómez de Barreda, D., S. S. Sidhu, J. Yu, T. V. Reed, and P. E. McCullough. 2014. Dithiopyr efficacy, absorption, and fate in annual bluegrass, goosegrass, smooth crabgrass, and tall fescue. Agron. J. 106(3):p. 844-850.
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DOI: 10.2134/agronj13.0366
Web URL(s):
https://dl.sciencesocieties.org/publications/aj/articles/106/3/844
    Last checked: 11/02/2016
    Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/aj/pdfs/106/3/844
    Last checked: 11/04/2016
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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