Full TGIF Record # 317071
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Web URL(s):https://scisoc.confex.com/scisoc/2021am/meetingapp.cgi/Paper/135240
    Last checked: 03/28/2022
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Hampy, Halle
Author Affiliation:North Carolina State University, Raleigh, NC
Title:Targeted management: Delineating Pythium population dynamics in creeping bentgrass putting greens
Section:Turfgrass pest management oral II: Diseases (includes student competition)
Other records with the "Turfgrass pest management oral II: Diseases (includes student competition)" Section

C05 turfgrass science
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Meeting Info.:Salt Lake City, Utah: November 7-10, 2021
Source:ASA, CSSA and SSSA International Annual Meetings. 2021, p. 135240.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Pythium root rot (PRR) is a detrimental disease of creeping bentgrass (CRB) putting greens. Although the disease is typically managed with late spring/early summer fungicides, the timing of preventative applications is poorly understood, as are the Pythium species responsible for the initial inoculum. The objective of this study is to delineate the population shifts of Pythium species in a CRB putting green over time. From Jun 2020 until May 2021, ten 25.5 cm2 soil cores were randomly collected from each of six adjacent 2.4 m2 plots. Soil moisture and soil temperature data were recorded monthly. After washing cores, root tissue (2 cm) from each group were plated onto P5ARP media and pure cultures were obtained for sequencing. Candidates (n=196) were identified as Pythium species by comparing the ITS region with verified Pythium spp. using NCBI BLASTĀ®. Pythium torulosum (62.2%) was consistently isolated throughout the study. The second most frequently isolated species was P. volutum (27.0%), followed by P. catenulatum (6.1%) and with 75% of P. catenulatum isolates collected in Sep 2020 and 100% of P. volutum isolates collected in Feb and Mar 2021. Pythium vanterpoolii (2%) was isolated in Jul, Aug, and Dec 2020 and in Mar 2021. Pythium spinosum, P. rostratifingens, and P. dissotocum were the least abundant species isolated (1-2%), with the last two collected only in Apr 2021. These data indicate that Pythium populations shift throughout the year. Upon the completion of this study, linking species pathogenicity and population fluctuations with soil temperature and moisture will assist turfgrass managers with optimal PRR management through targeted fungicide programs."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hampy, H. 2021. Targeted management: Delineating Pythium population dynamics in creeping bentgrass putting greens. Agron. Abr. p. 135240.
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    Last checked: 03/28/2022
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