Full TGIF Record # 333575
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Web URL(s):https://scisoc.confex.com/scisoc/2023am/meetingapp.cgi/Paper/150254
    Last checked: 12/08/2023
Publication Type:
Content Type:Abstract or Summary only
Author(s):Powlen, Jada; Bigelow, Cale; Richmond, Douglas S.
Author Affiliation:Powlen: Presenting Author and Purdue University, West Lafayette, IN; Bigelow: Purdue University, West Lafayette, IN; Richmond: Entomology, Purdue University, West Lafayette, IN
Title:Bluegrass billbug populations and response among Kentucky bluegrass cultivars
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Meeting Info.:St. Louis, Missouri: October 29-November 1, 2023
Source:ASA, CSSA, SSSA International Annual Meeting. 2023, p. 150254.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Kentucky bluegrass (Poa pratensis L.: KBG) is a common turfgrass species grown in temperate regions throughout the world. Various billbug species (Coleoptera: Dryophthoridae: Sphenophorus spp. Schönherr) can infest and cause turf damage to KBG. Identifying KBG cultivars with increased tolerance to billbug larval feeding or reduced suitability is one method to potentially reduce insecticide needs. Information regarding KBG resistance to billbugs among modern cultivars remains limited. A field study was conducted to evaluate billbug populations and summer visual turf quality for 81 KBG cultivars in the 2017 National Turfgrass Evaluation Program (NTEP) Kentucky Bluegrass Test in West Lafayette, IN. Destructive soil sampling was used to determine billbug larval populations in July of 2020 and 2021. Turfgrass visual quality was rated monthly (1-9 scale, 9=optimal), and growth characteristics (canopy growth rate and lateral spreading) were visually rated during 2020. Billbug populations in 2020 and 2021 ranged from 0.0 to 287.4 and 0.0 to 96.6 billbugs m-2, respectively. Visual quality among cultivars throughout the summer ranged from 2.7 to 7.3 and 3.0 to 7.3 in 2020 and 2021, respectively. Billbug populations were negatively correlated with visual quality in August and September in both evaluation years. Faster spring canopy growth rates and increased lateral spreading were correlated with lower billbug population density during 2020. Overall, this field study reinforces the importance of selecting resistant KBG cultivars to reduce billbug damage, improve overall summer performance, and limit potential insecticide needs."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Powlen, J., C. Bigelow, and D. S. Richmond. 2023. Bluegrass billbug populations and response among Kentucky bluegrass cultivars. Agron. Abr. p. 150254.
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    Last checked: 12/08/2023
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