Full TGIF Record # 302251
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Web URL(s):https://scisoc.confex.com/scisoc/2018am/meetingapp.cgi/Paper/113386
    Last checked: 11/19/2018
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Beck, Leslie; Serena, Matteo
Author Affiliation:New Mexico State University, Las Cruces, NM
Title:Evaluations of sequential-application herbicide efficacy for control of bermudagrass (Cynodon dactylon)
Section:C05 turfgrass science
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Turfgrass science - II poster
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Meeting Info.:Baltimore, Maryland: November 4-7, 2018
Source:ASA, CSSA and SSSA International Annual Meetings. 2018, p. 113386.
# of Pages:1
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Canadian Society of Agronomy]
Abstract/Contents:"During the summer of 2017, a field study was conducted to evaluate the efficacy of herbicide combinations and sequential applications on bermudagrass (Cynodon dactylon L.) control in Las Cruces, NM. Applications of the labeled rates of fluazifop-p-butyl, clethodim, and low (L) and high (H) rates of glyphosate were applied alone as a single application (SA), or followed by one (1) or two (2) sequential applications of glyphosate (L) or (H). Digital image analysis for bermudagrass cover (%) and visual ratings for bermudagrass injury (%) were collected weekly until 78 Days after initial treatment (DAIT). The glyphosate SA(H) treatment displayed significantly greater injury (13.3%) than the other herbicide SA treatments (0 - 4.17%) at 78 DAIT. Additionally, digital images indicated that the glyphosate SA(L) and SA(H) treatments displayed significantly less cover than all other SA herbicide treatments in at 78 DAIT. With clethodim, additions of 1(L), 1(H), 2(L), and 2(H) applications of glyphosate significantly increased the amount of injury (93.5 - 99.83%), and significantly decreased the cover (4.82 - 16.63%) over the clethodim SA at 78 DAIT. This indicated that there is no need for additional applications and increase amounts of glyphosate beyond clethodim + 1(L). With fluazifop-p-butyl; however, 2(H) and 1(H) applications increased injury significantly (99.5 and 94.3%), while applications of 2(H) and 1(H) decreased percent cover (4.88 and 21.46%) compared to the fluazifop-p-butyl + 1(L) application, respectively, indicating that 1 or 2 sequential applications of glyphosate(H) may increase bermudagrass management over SA(L). Single application sequences were inferior to 1 or 2 sequential applications for bermudagrass control. There was no evidence that glyphosate 1(L) performs differently than 1(H), and little evidence for 2(H) performs better than 1(H), indicating there is no need for increased rates of glyphosate or applications needed for improved bermudagrass control beyond one sequential application at the low rate."
See Also:See also related article "Sequential-application herbicides for bermudagrass control" Golf Course Management, 87(10) October 2019, p. 77, R=308657. R=308657
Note:This item is an abstract only!
"Poster Number: 1236"
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Beck, L., and M. Serena. 2018. Evaluations of sequential-application herbicide efficacy for control of bermudagrass (Cynodon dactylon). Agron. Abr. p. 113386.
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