Full TGIF Record # 309576
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Web URL(s):https://scisoc.confex.com/scisoc/2019am/meetingapp.cgi/Paper/121849
    Last checked: 12/04/2019
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Carroll, Devon; Brosnan, James T.; McCullough, Patrick E.; McCurdy, James D.; Patton, Aaron J.; Castro, Edicarlos; Liu, Wenwen
Author Affiliation:Carroll: Pennsylvania State University, Thornhurst, PA; Brosnan: Department of Plant Sciences, University of Tennessee-Knoxville, Knoxville, TN; McCullough: University of Georgia, Griffin, GA; McCurdy: Plant and Soil Sciences, Mississippi State University, Starkville, MS; Patton: Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN; Castro: Mississippi State University, MS; Liu: Purdue University, West Lafayette, IN
Title:When is Poa annua seed most germinable during spring in the transition zone and Southern United States?
Section:C05 turfgrass science
Other records with the "C05 turfgrass science" Section

Turfgrass pest management poster: Diseases, insects, weeds (includes student competition)
Other records with the "Turfgrass pest management poster: Diseases, insects, weeds (includes student competition)" Section
Meeting Info.:San Antonio, Texas: November 10-13, 2019
Source:ASA, CSSA and SSSA International Annual Meetings. 2019, p. 121849.
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: Clipping removal; Germination rate; Growing degree days; Poa annua; Poa annua control; Seed bank; Seed germination; Transition zone
Geographic Terms:Southern United States
Abstract/Contents:"Soil seedbank management is an important means of combatting herbicide resistance in weeds such as annual bluegrass (Poa annua L.). Minimizing deposition of germinable annual bluegrass seed into the soil via clipping collection could be a non-chemical means of reducing annual bluegrass populations in turfgrass. Our objective was to assess the germinability of annual bluegrass seed in spring to determine when clipping collection could be most impactful. Research was conducted at the University of Tennessee (Knoxville, TN) as well as at the University of Georgia, Mississippi State University, and Purdue University. Annual bluegrass seed was harvested from plots (1 m2) at each location arranged in randomized complete block designs with four replications. Unique growing degree-day (GDD0C; base 0 C with accumulation totaled from 1 January 2019) benchmarks were assigned to each plot. Seed was collected every 100 GDD0C from 400 to 1,100 GDD0C. Harvested seed was dried at 36°C for 7 d, screened with sieves to remove chaff, and stored at -18°C for a minimum of 7 d. Four 50-seed aliquots from each plot were placed on moistened blotter paper in petri dishes (100 mm). These were sealed with parafilm and randomized in a growth chamber set to 25/20°C on an 8/16 hr light/dark cycle. Germination was assessed every three days from days 6 to 21 after incubation. Seed was deemed to have germinated after coleoptile emergence and was removed thereafter. Two experimental runs were conducted at each location during 2019. In Tennessee, growing degree-day significantly affected germination from nine to 21 days after seeding. Results of this study indicate annual bluegrass seeds are most germinable from 700 to 900 GDD0C in spring. Clipping collections at these timings may reduce annual bluegrass populations over time."
See Also:See also related article "When is Poa annua seed most germinable in spring?" Golf Course Management, 88(2) February 2020, p. 79, R=310674. R=310674
Note:This item is an abstract only!
"Poster #1640"
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Carroll, D., J. T. Brosnan, P. E. McCullough, J. D. McCurdy, A. J. Patton, E. Castro, et al. 2019. When is Poa annua seed most germinable during spring in the transition zone and Southern United States?. Agron. Abr. p. 121849.
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