Full TGIF Record # 294901
Item 1 of 1
DOI:10.1080/00275514.2017.1377587
Web URL(s):http://www.tandfonline.com/doi/full/10.1080/00275514.2017.1377587
    Last checked: 02/08/2018
    Access conditions: Item is within a limited-access website
http://www.tandfonline.com/doi/pdf/10.1080/00275514.2017.1377587?needAccess=true
    Last checked: 02/08/2018
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
Publication Type:
i
Refereed
Author(s):Koehler, Alyssa M.; Shew, H. David
Author Affiliation:Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, North Carolina
Title:Seasonal dynamics and fungicide sensitivity of organisms causing brown patch of tall fescue in North Carolina
Section:Plant pathogens
Other records with the "Plant pathogens" Section
Source:Mycologia. Vol. 109, No. 4, 2017, p. 667-675.
Publishing Information:Lancaster, Pennsylvania: New Era Print Co. for the New York Botanical Garden
# of Pages:9
Related Web URL:http://www.tandfonline.com/doi/abs/10.1080/00275514.2017.1377587
    Last checked: 02/08/2018
    Notes: Abstract only
Keywords:TIC Keywords: Chemical sensitivity; Comparisons; Disease control; Disease identification; Disease surveys; Festuca arundinacea; Fungicide efficacy; Fungicide evaluation; Isolation technique; Rhizoctonia blight; Seasonal variation
Geographic Terms:North Carolina
Abstract/Contents:"Brown patch, caused by multiple species of Rhizoctonia and Rhizoctonia-like fungi, is the most severe summer disease of tall fescue in home lawns across the southeastern United States. Home lawns were surveyed in central North Carolina from 2013 to 2015 to determine the organisms present during typical epidemics of brown patch in tall fescue. Isolates of Rhizoctonia and Rhizoctonia-like fungi were obtained by sampling 147 locations in July 2013 and May and July 2014. In addition, 11 sites were sampled once a week for 12 consecutive weeks from late May to the end of July 2015. All isolates were identified to species and anastomosis group with nuc rDNA internal transcribed spacer (ITS) sequence analysis. Isolations from brown patch lesions in May 2014 predominately yielded Ceratobasidium cereale (77% of the organisms recovered), whereas the organisms recovered in July 2013 and 2014 were R. solani AG 2-2-IIIB (44%), R. solani AG 1-IB (37%), and R. zeae (14%). In 2015, Ceratobasidium cereale was isolated from all 11 locations in May but was replaced by Rhizoctonia species in June and July. Sensitivity of the May 2014 isolates to multiple concentrations of the fungicides azoxystrobin, flutolanil, fluxapyroxad, and propiconazole was compared with sensitivity of isolates collected in 2003, to determine whether multiple years of exposure to fungicides applied for brown patch control had altered fungicide sensitivity. Historical isolates of R. solani, which had never been exposed to fungicide applications for brown patch control, were also included for comparison. Mean EC50 values (concentration of fungicide needed to inhibit mycelial growth by 50%) varied across fungicides and species, but no resistance was observed, and there was no apparent shift in sensitivity over the years. An additional 94 isolates from 2015 were screened against azoxystrobin, flutolanil, fluxapyroxad, and propiconazole, and fungicide insensitivity was not observed."
Language:English
References:25
Note:Pictures, color
Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Koehler, A. M., and H. D. Shew. 2017. Seasonal dynamics and fungicide sensitivity of organisms causing brown patch of tall fescue in North Carolina. Mycologia. 109(4):p. 667-675.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=294901
If there are problems with this record, send us feedback about record 294901.
Choices for finding the above item:
DOI: 10.1080/00275514.2017.1377587
Web URL(s):
http://www.tandfonline.com/doi/full/10.1080/00275514.2017.1377587
    Last checked: 02/08/2018
    Access conditions: Item is within a limited-access website
http://www.tandfonline.com/doi/pdf/10.1080/00275514.2017.1377587?needAccess=true
    Last checked: 02/08/2018
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
Find Item @ MSU
MSU catalog number: b2214983
MSU catalog number: b5343430
Find from within TIC:
   Digitally in TIC by record number.
Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)