Full TGIF Record # 333517
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Web URL(s):https://scisoc.confex.com/scisoc/2023am/meetingapp.cgi/Paper/152025
    Last checked: 12/06/2023
Publication Type:
Content Type:Abstract or Summary only
Author(s):Anders, Jessica; Sekyere, Emmanuel; Battaglia, Mike; Hutchens, Wendell J.
Author Affiliation:Anders: Presenting Author and University of Arkansas, Fayetteville, AR; Sekyere: University of Arkansas, Fayetteville, AR; Battaglia: Horticulture, University of Arkansas, Little Rock, AR; Hutchens: School of Plant and Environmental Science, UofA - Cooperative Extension Service, Little Rock, AR
Title:Demethylation inhibiting (DMI) fungicide safety screening on creeping bentgrass putting greens in Arkansas
Section:Turf pest management oral II
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C05 turfgrass science
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Meeting Info.:St. Louis, Missouri: October 29-November 1, 2023
Source:ASA, CSSA, SSSA International Annual Meeting. 2023, p. 152025.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Demethylation inhibiting (DMI) fungicides are documented to cause injury to turfgrass when applied at suboptimal temperatures during periods of high stress. Demethylation inhibiting fungicides have historically exhibited both phytotoxic and potential growth regulating effects on susceptible turfgrass. A study using four randomized complete block replications was conducted during the summer of 2023 at the University of Arkansas Horticulture Research Farm, Fayetteville, AR on a 'Pure Eclipse' creeping bentgrass [Agrostis stolonifera] putting green to determine the safety of various DMI fungicides. This study was conducted in the absence of plant growth regulators and focused on chemical applications of the following nine DMI fungicides: flutriafol, mefentrifluconazole, metconazole, myclobutanil, propiconazole, prothioconazole, tebuconazole, triadimefon, and triticonazole. A nontreated control was included for comparison of fungicides. The study was conducted from 23 Jun 2023 to 1 Sep 2023, with six applications made at the highest labeled rate every two weeks. Applications were made with a CO2-pressurized backpack sprayer delivering solution at 814 L ha-1, with individual plots measuring 1 m x 2.5 m. Data collected included: visual assessment of turfgrass quality (1 = dead turfgrass; 6 = acceptable turfgrass; 9 = excellent turfgrass), visual phytotoxicity percentage, and clipping yield (g). Clippings were collected, dried, and weighed weekly to measure plant growth regulating effects. Root length (mm) data was collected at the end of the study. Throughout the entirety of the study triadimefon, propiconazole, and myclobutanil were the most damaging, while all other fungicides resulted in similar phytotoxicity to the nontreated control. Fungicides that caused the greatest phytotoxicity also increased clipping weights. No differences in root length were detected. By characterizing the most damaging active ingredients, turfgrass professionals can use this information in creating their agronomic and fungicide programs."
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Anders, J., E. Sekyere, M. Battaglia, and W. J. Hutchens. 2023. Demethylation inhibiting (DMI) fungicide safety screening on creeping bentgrass putting greens in Arkansas. Agron. Abr. p. 152025.
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    Last checked: 12/06/2023
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