Full TGIF Record # 333510
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Web URL(s):https://scisoc.confex.com/scisoc/2023am/meetingapp.cgi/Paper/149576
    Last checked: 12/06/2023
Publication Type:
Content Type:Abstract or Summary only
Author(s):Koo, Daewon; Goncalves, Clebson G.; Askew, Shawn D.
Author Affiliation:Koo: Presenting Author and Blacksburg, VA; Goncalves: Agriculture & Natural Resources, University of California, Ukiah, CA; Askew: Plant Pathology, Physiology, and Weed Science, Virginia Tech, Blacksburg, VA
Title:Organic chemicals for weed control in dormant turf
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Meeting Info.:St. Louis, Missouri: October 29-November 1, 2023
Source:ASA, CSSA, SSSA International Annual Meeting. 2023, p. 149576.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Warm-season turfgrass such as bermudagrass (Cynodon dacdactylon (L.) Pers. Var. dactylon) and zoysiagrass (Zoysia japonica Steud.) remain dormant from late fall through the winter months in northern temperate climates. Winter annual weeds can still germinate during this time and infest the area while desirable turfgrass is not actively growing. Turf managers use selective and nonselective herbicides to control winter weeds during turf dormancy. Recent litigation issues regarding glyphosate, increasing cases of herbicide-resistant weeds, and heightened public pressure to reduce synthetic pesticide use have increased the need for alternative or organic weed control options in turfgrass. Multi-year field trials were conducted at the Glade Road Research Facility of Virginia Tech in Blacksburg, VA to evaluate organic chemicals to control winter annual weeds on bermudagrass and zoysiagrass fairways. Sequential applications of Axxe (ammonium nonanoate), AvengerAG (d-limonene), Green Gobbler (20, 30, 40% acetic acid), BurnOut (24% citric acid) were compared with single application of glufosinate (1400 g ai ha-1) and glyphosate (700 g ai ha-1). Trials were arranged as randomized complete block design with 4 replications. Treatments were initiated in late February in 2022 and 2023. At 21 DAT, Green Gobbler 30% and 40% controlled annual bluegrass 87 and 89%, respectively, which was equivalent to glufosinate. However, annual bluegrass was only transiently discolored from organic products other than Green Gobbler. At 91DAT, glufosinate and glyphosate controlled annual bluegrass more than all organic products, however, Green Gobbler 40% still controlled 70% of annual bluegrass. All Green Gobbler concentrations applied thrice controlled >93% corn speedwell and >95% common chickweed. The data suggest that organic products differed in weed control efficacy, but Green Gobbler might offer a costly alternative to synthetic herbicides in dormant turf."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Koo, D., C. G. Goncalves, and S. D. Askew. 2023. Organic chemicals for weed control in dormant turf. Agron. Abr. p. 149576.
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    Last checked: 12/06/2023
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