Full TGIF Record # 309575
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Web URL(s):https://scisoc.confex.com/scisoc/2019am/meetingapp.cgi/Paper/121398
    Last checked: 12/04/2019
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Publication Type:
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Report
Content Type:Abstract or Summary only
Author(s):Wilber, Amy L.; McCurdy, James D.; Richard, Michael P.
Author Affiliation:Wilber and Richard: Mississippi State University, Mississippi State, MS; McCurdy: Plant and Soil Sciences, Mississippi State University, Starkville, MS
Title:Effects of preemergence herbicides on St. Augustinegrass (Stenotaphrum secundatum) sod grow-in
Section:C05 turfgrass science
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Turfgrass pest management poster: Diseases, insects, weeds (includes student competition)
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Meeting Info.:San Antonio, Texas: November 10-13, 2019
Source:ASA, CSSA and SSSA International Annual Meetings. 2019, p. 121398.
# of Pages:1
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
Keywords:TIC Keywords: Grow in; Herbicide evaluation; Percent living ground cover; Preemergence herbicides; Sod production; Sod strength; Spectral reflectance; Stenotaphrum secundatum
Abstract/Contents:"St. Augustinegrass (Stenotaphrum secundatum) sod is widely produced in the southeastern and gulf-coastal United States. Producers apply preemergence herbicides to prevent annual weed emergence. Those herbicides may negatively affect sod grow-in and harvest characteristics. Our objective is to characterize the effects of commonly used preemergence herbicides upon St. Augustinegrass grow-in and sod tensile strength. Field research was conducted as a randomized complete block design at Mississippi State University during summer 2019. Within each experimental unit (2.32 m2), ten plugs (232 cm2 apiece) of MS-B-2-3-98 St. Augustinegrass were planted on June 12. Herbicide treatments were applied on June 13 with a CO2 pressurized back-pack sprayer in a water carrier volume of 374 L ha-1. Treatments included a non-treated check, prodiamine (0.595 kg pendimethalin (1.66 kg ha-1), oxadiazon (2.24 kg ha-1), S-metolachlor (2.78 kg ha-1), atrazine (2.24 kg ha-1), atrazine + S-metolachlor (2.24 + 1.74 kg ha-1), and dithiopyr (0.42 kg ha-1), as well as the treated-check, indaziflam (0.0327 kg ha-1). Visual green cover and spectral reflectance (╬╗=670, 730, and 780 nm) were observed weekly. ANOVA (╬▒ = 0.05) suggests responses differed due to week after treatment (WAT). Means were separated by 95% confidence limits using the GLIMMIX procedure (SAS 9.4 SAS Institute Inc., Cary, NC). For brevity, 5 WAT results are discussed. Prodiamine, indaziflam, and S-metolachlor inhibited growth, causing lower visual cover (6.9, 5.8, 7.4%, respectively) and lower adjusted NDVI values (0.006, -0.029, 0.011, respectively) than the non-treated check (9.8% and 0.049). Pendimethalin reduced visual cover (7.7%) compared to the non-treated check (9.8%). Dithiopyr reduced adjusted NDVI (0.013) compared to the non-treated check (0.049). Oxadiazon, atrazine, and atrazine + S-metolachlor did not reduce visual cover or adjusted NDVI relative to the non-treated check. Research is ongoing. Sod tensile strength will be measured at maturity."
Language:English
References:0
Note:This item is an abstract only!
"181"
"Poster #1639"
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wilber, A. L., J. D. McCurdy, and M. P. Richard. 2019. Effects of preemergence herbicides on St. Augustinegrass (Stenotaphrum secundatum) sod grow-in. Agron. Abr. p. 121398.
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    Last checked: 12/04/2019
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