Full TGIF Record # 317106
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Web URL(s):https://scisoc.confex.com/scisoc/2021am/meetingapp.cgi/Paper/134069
    Last checked: 03/30/2022
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Bolton, Connor; Tucker, Kevin; Henry, Gerald M.
Author Affiliation:Bolton and Henry: University of Georgia-Athens, Athens, GA; Tucker: Crop and Soil Sciences, University of Georgia-Athens, Athens, GA
Title:Response of weeds and bentgrass cultivars to plant growth regulators
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.:Salt Lake City, Utah: November 7-10, 2021
Source:ASA, CSSA and SSSA International Annual Meetings. 2021, p. 134069.
# of Pages:1
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
Abstract/Contents:"Frequent use of plant growth regulators (PGRs) may decrease turfgrass recovery from wear and competition with weeds. Several PGRs are utilized in turf and response of new creeping bentgrass cultivars is unknown. Therefore, the objective of our research was to evaluate the response of several creeping bentgrass cultivars and common turfgrass weeds to PGRs. Research was conducted in 2019 at the Athens Turfgrass Research and Education Center greenhouse complex in Athens, GA. Creeping bentgrass (Agrostis stolonifera L.) cultivars ('Penncross', 'L-93', '007', 'V-8', and 'Tour Pro') and weed species {goosegrass [Eleusine indica (L.) Gaertn.] and large crabgrass (Digitaria sanguinalis L.)} were examined. Plant growth regulator treatments consisted of trinexapac-ethyl (TE) (48 and 96 g ai ha-1) and prohexadione calcium (PC) (116 and 231 g ai ha-1). Plant pots were cut to 2.5 cm after two weeks of growth following PGR application and above-ground plant tissue was weighed to obtain biomass (g). Only 116 g ai ha-1 of PC was required to regulate creeping bentgrass cultivars, while the higher rate (96 g ai ha-1) of TE was needed to provide moderate regulation [40 to 50% growth inhibition (GI)], regardless of cultivar. Some creeping bentgrass cultivars exhibited a differential response to PGRs. The least amount of regulation in response to TE (22 to 33% GI) was observed by 'V-8'; however, 'V-8' was one of the most regulated cultivars by PC (79 to 80% GI). Neither PGR successfully regulated goosegrass (14 to 30% GI), regardless of rate, but moderate regulation of large crabgrass (40 to 49% GI) was observed in response to TE at 96 g ai ha-1 and PC at 116 and 231 g ai ha-1. Continual PGR applications may shift turfgrass-weed competition dynamics in favor of problematic weeds like goosegrass; however, this effect may be PGR specific."
See Also:Updated version appears in International Turfgrass Society Research Journal, 14(1) June 2022, p. 791-796, R=321454. R=321454
Note:"Poster # 1236"
Section "159"
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Bolton, C., K. Tucker, and G. M. Henry. 2021. Response of weeds and bentgrass cultivars to plant growth regulators. Agron. Abr. p. 134069.
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