Full TGIF Record # 317082
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Web URL(s):https://scisoc.confex.com/scisoc/2021am/meetingapp.cgi/Paper/139215
    Last checked: 03/29/2022
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Goncalves, Clebson Gomes; Askew, Shawn D.; de Castro, Edicarlos; McCurdy, James D.
Author Affiliation:Goncalves: Duotorando em Agronomia, Virginia Tech, Blacksburg, VA; Askew: Plant Pathology, Physiology, and Weed Science, Virginia Tech, Blacksburg, VA; de Castro: Mississippi State University, Mississippi State, MS; McCurdy: Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS
Title:A comparison of chemical and nonchemical approaches for annual bluegrass control in turf
Section:Turf pest managment oral III
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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. 139215.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Organic weed control options for turfgrass systems remain in high demand. For annual bluegrass (Poa annua), the problem has intensified because of resistance to many once-effective synthetic herbicides. Although there are few products and strategies that are labeled as organic options, the viability, practicality, and efficiency of these alternative strategies for weed control in turfgrass system is poorly understood. Field trials were conducted during the 2020 and 2021 growing season at Virginia Tech in Blacksburg, VA, and Mississippi State University Starkville, MS, to examine the efficacy of alternative strategies for annual bluegrass control in perennial ryegrass, tall fescue, and bermudagrass turf. The organic treatments included hand weeding, boiling water, flaming, sod replacement, solarization (4000 W/m2) and (8000 W/m2), and shading (six weeks). Also, were included a selective herbicide (Methiozolin) and a non-selective herbicide (Glufosinate) as a standard treatment, and a nontreated check. Herbicides treatments were applied with a CO2-powered boom sprayer calibrated to deliver 40 gal/ac. Results from these trials indicate that manual weed control and sod replacement may be great options, but may be costly. Shading was minimally effective at controlling annual bluegrass and may require more than six weeks disruption of turf use. Solarization appears to be seasonally dependent such that cool, low-radiation, conditions in spring will be less effective than warm, highly radiant summer conditions in the state of Virginia. Solarization (8000 W/m2) showed non-selective annual bluegrass control of perennial ryegrass and tall fescue turf and injury were greater than 95%, however, our data suggest that solarization can selectively control annual bluegrass in the bermudagrass lawn. Flaming and Boiling-water treatments killed all annual bluegrass and turf vegetation greater than or equal to glufosinate. Boiling water resulted in less subsequent weed germination than flame and overall showed quicker tall fescue and perennial ryegrass recovery than flame or glufosinate."
See Also:See also related item "Non-chemical approaches to annual bluegrass control in perennial ryegrass and tall fescue" Proceedings of the Sixth Annual Meeting of the Northeastern Plant, Pest, and Soils Conference, Vol. 6 2021, p. 11, R=329610. R=329610
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Goncalves, C. G., S. D. Askew, E. de Castro, and J. D. McCurdy. 2021. A comparison of chemical and nonchemical approaches for annual bluegrass control in turf. Agron. Abr. p. 139215.
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