Full TGIF Record # 309452
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Web URL(s):https://scisoc.confex.com/scisoc/2019am/meetingapp.cgi/Paper/118917
    Last checked: 11/26/2019
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Doherty, Joseph; Roberts, Joseph Anthony
Author Affiliation:Doherty: Plant Science and Landscape Architecture, University of Maryland, College Park, MD; Roberts: University of Maryland, College Park, MD
Title:Using niche-clearing practices for improvement of biological control of brown patch in home lawn turf
Section:C05 turfgrass science
Other records with the "C05 turfgrass science" Section

Turfgrass pest management oral 1 (includes student competition)
Other records with the "Turfgrass pest management oral 1 (includes student competition)" Section
Meeting Info.:San Antonio, Texas: November 10-13, 2019
Source:ASA, CSSA and SSSA International Annual Meetings. 2019, p. 118917.
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: Biological control organisms; Brown patch; Disease control; Hydrogen peroxide; Lawn turf; Lolium perenne; Microbial activity
Cultivar Names:Express II
Abstract/Contents:"There is an abundance of microorganisms present in turfgrasses for an introduced biological control agent (BCA) to overcome. Competition from these resident microbial populations may be one reason why there are inconsistencies in the efficacy of introduced BCAs. A greenhouse experiment was established on pots of perennial ryegrass (Lolium perenne L. cv. "Express II") to explore the possibility of niche-clearing practices to reduce existing microbial populations thereby improving the establishment and efficacy of BCAs. A split-split plot experimental design was used with a factorial treatment arrangement to assess combinations of hydrogen peroxide with BCAs (Bacillus subtilis QST-713, B. subtilis Exp. W9, Pseudomonas chlororaphis AFS009). Two experimental runs were conducted. Treatments were applied four times at label rate on a 14 d interval with hydrogen peroxide applications occurring 3 h prior to BCA applications. Half of the pots were inoculated with Rhizoctonia solani Kuhn five weeks after trial initiation. Samples of foliage were collected at 0, 2, 4, 7, 10, and 14 days after each application, and leaf washings were plated onto selective media to enumerate culturable bacterial communities (Bacillus spp., Pseudomonas spp., and general bacteria). In both experimental runs brown patch developed quickly, and all inoculated pots were 100% infected by 10 d after inoculation, however treatments including hydrogen peroxide survived on average 48 h longer. Similar trends in microbial communities were observed in both experimental runs. Pots treated with hydrogen peroxide prior to BCA introduction had higher Bacillus and Pseudomonas populations following the third treatment application. These data show that hydrogen peroxide may help with the establishment of BCAs, but more research is needed to understand this interaction in the field."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Doherty, J., and J. A. Roberts. 2019. Using niche-clearing practices for improvement of biological control of brown patch in home lawn turf. Agron. Abr. p. 118917.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=309452
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    Last checked: 11/26/2019
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