Full TGIF Record # 325002
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Web URL(s):https://scisoc.confex.com/scisoc/2022am/meetingapp.cgi/Paper/143629
    Last checked: 01/31/2023
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Begitschke, Erick; Tucker, Kevin; Wang, Julie; Henry, Gerald M.
Author Affiliation:Begitschke: Presenting Author and University of Georgia-Athens; Tucker, Wang and Henry: University of Georgia-Athens
Title:Preemergence pyrimisulfan applications affect purple nutsedge survival and reproduction
Section:Turfgrass pest management oral I (includes student competition)
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C05 turfgrass science
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Meeting Info.:Baltimore, Maryland: November 6-9, 2022
Source:ASA, CSSA, SSSA International Annual Meeting. 2022, p. 143629.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"PPurple nutsedge (Cyperus rotundus L.) is one of the most problematic turfgrass weeds due to a high growth rate, aggressive rhizomes, and prolific tuber production. Currently there are limited preemergence herbicide options that provide efficacious purple nutsedge control. Therefore, the objective of this research was to examine the preemergence activity of two formulations of pyrimisulfan on purple nutsedge control and reproduction. Purple nutsedge tubers were planted in 1 L pots containing native soil at the Athens Turfgrass Research and Education Center greenhouse complex in Athens, GA in 2021. Treatments were initiated on July 14, 2021 and consisted of single and sequential applications of pyrimisulfan (Vexis) at 49 g ai ha-1, EH1663 (liquid formulation of pyrimisulfan) at 52.5 g ai ha-1, and EH1663 + dithiopyr at 500 g ai ha-1. Sequential applications were made on September 3, 2021. A non-treated check was added for comparison. Pots were destructively harvested one month after sequential treatments. Shoot dry weight (g), rhizome dry weight (g), and tuber number were determined for each pot. Tubers were cut in half longitudinally and soaked in tetrazolium chloride for 3 hours to determine tuber viability (%). The liquid formulation of pyrimisulfan (EH 1663) was more efficacious than the dry formulation (Vexis). EH1663 resulted in shoot dry weight, rhizome dry weight, and viable tuber reductions of 100%, 99%, and 100%, respectively, 12 weeks after initial treatment (WAIT). Neither a sequential application nor the addition of dithiopyr increased the efficacy of EH1663."
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Begitschke, E., K. Tucker, J. Wang, and G. M. Henry. 2022. Preemergence pyrimisulfan applications affect purple nutsedge survival and reproduction. Agron. Abr. p. 143629.
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    Last checked: 01/31/2023
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