Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-23T05:56:17.602Z Has data issue: false hasContentIssue false
  • English
  • Français

Seashore Paspalum Tolerance to Amicarbazone at Various Seasonal Application Timings

Published online by Cambridge University Press:  20 January 2017

Jialin Yu ,
Patrick E. McCullough  and
Mark A. Czarnota
Jialin Yu
Affiliation:
Department of Crop and Soil Sciences and Department of Horticulture, University of Georgia, 1109 Experiment Street, Griffin, GA 30223
Patrick E. McCullough*
Affiliation:
Department of Crop and Soil Sciences and Department of Horticulture, University of Georgia, 1109 Experiment Street, Griffin, GA 30223
Mark A. Czarnota
Affiliation:
Department of Crop and Soil Sciences and Department of Horticulture, University of Georgia, 1109 Experiment Street, Griffin, GA 30223
*
Corresponding author's E-mail: [email protected].
Get access Rights & Permissions [Opens in a new window]

Abstract

Turfgrass injury from triazines has limited the use of photosystem II (PS II) inhibitors for weed control in seashore paspalum. Amicarbazone is a new PS II inhibitor with potential safety in seashore paspalum, but the effects of application timing on turf tolerance has received limited investigation. Field experiments were conducted in Griffin, GA to evaluate the tolerance of ‘Sea Isle 1’ seashore paspalum to amicarbazone applications in winter, spring, and summer. Seashore paspalum had minimal injury (< 5%) from amicarbazone treatments (98, 196, and 392 g ai ha−1) applied for annual bluegrass control in winter and spring. By 6 wk after treatment (WAT), amicarbazone at 392 g ha−1 provided 78 and 90% annual bluegrass control in 2013 and 2014, respectively, and was similar to pronamide at 1,680 g ai ha−1. Amicarbazone at 196 g ha−1 provided 71% control of annual bluegrass in 2014, but control was poor (< 70%) in 2013. Sequential amicarbazone applications at 98 g ha−1 provided poor control in both years by 6 WAT. From six amicarbazone rates (up to 984 g ha−1) applied in summer, seashore paspalum required 510 and < 123 g ha−1 for 20% turfgrass injury (I20) and 20% clipping reduction (CR20), respectively, whereas I20 and CR20 measured > 984 g ha−1 for ‘Tifway’ bermudagrass. Overall, amicarbazone may be safely applied to seashore paspalum in winter, spring, and summer at rates and regimens evaluated. However, seashore paspalum may exhibit shoot growth inhibition up to 4 WAT, suggesting that end users should be cautious when using amicarbazone during active growth in summer.

El daño al césped causado por triazines ha limitado el uso de inhibidores del fotosistema II (PSII) para el control de malezas en Paspalum vaginatum. Amicarbazone es un inhibidor PSII nuevo con potencial de ser seguro en P. vaginatum, pero los efectos del momento de aplicación sobre la tolerancia del césped han sido investigados poco. Se realizaron experimentos de campo en Griffin, Georgia para evaluar la tolerancia de P. vaginatum 'Sea Isle 1′ a aplicaciones de amicarbazone en el invierno, la primavera, y el verano. P. vaginatum tuvo daño mínimo (<5%) con tratamientos de amicarbazone (98, 196, y 392 g ai ha−1) aplicados para el control de Poa annua en el invierno y la primavera. A 6 semanas después del tratamiento (WAT), amicarbazone a 392 g ha−1 brindó 78 y 90% de control de P. annua en 2013 y 2014, respectivamente, y fue similar a pronamide a 1,680 g ai ha−1. Amicarbazone a 196 g ha−1 brindó 71% de control de P. annua en 2014, pero el control fue pobre (<70%) en 2013. Aplicaciones secuenciales de amicarbazone a 98 g ha−1 brindaron control pobre en ambos años a 6 WAT. A partir de seis dosis de amicarbazone (hasta 984 g ha−1) aplicadas en el verano, P. vaginatum requirió 510 y <123 g ha−1 para causar 20% de daño al césped (I20) y 20% de reducción en los residuos de corta o clippings (CR20), respectivamente, mientras I20 y CR20 fue >984 g ha−1 para Cynodon dactylon × C. transvaalensis Burtt-Davy 'Tifway'. En general, amicarbazone puede ser aplicado en forma segura a P. vaginatum en el invierno, la primavera, y el verano a las dosis y regímenes evaluados. Sin embargo, P. vaginatum podría exhibir inhibición en el crecimiento del tejido aéreo hasta 4 WAT, lo que sugiere que los usuarios deberían ser cuidadosos cuando usen amicarbazone durante el crecimiento activo en el verano.

Keywords

Annual bluegrass, Poa annua L.bermudagrass, Cynodon dactylon × C. transvaalensis Burtt-Davy ‘Tifway’seashore paspalum, Paspalum vaginatum Sw. ‘Sea Isle 1’Annual bluegrassinjuryphotosystem IIturfgrass
Type
Research Article
Information
Weed Technology , Volume 29 , Issue 1 , March 2015 , pp. 42 - 47
Copyright
Copyright © Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

Anonymous (2012) Xonerate herbicide label. Cary, NC: Arysta LifeScience North America, LLC.Google Scholar
Askew, SD (2011) Movement of sulfonylurea herbicides to nontarget site. Page 168 in Proceedings of 51st Annual Meeting of Weed Science Society of America. Lawrence, KS 66044.Google Scholar
Dudeck, AE, Peacock, CH (1985) Effects of salinity on seashore paspalum turfgrasses. Agron J 77:47–50 Google Scholar
Duncan, RR, Carrow, RN, eds (2000) Seashore Paspalum—The Environmental Turfgrass. Chelsea, MI: Ann Arbor Press. Pp 4–13 Google Scholar
Elmore, MT, Brosnan, JT, Breeden, GK, Patton, AJ (2013) Mesotrione, topramezone, and amicarbazone combinations for postemergence annual bluegrass (Poa annua) control. Weed Technol 27:596–603 Google Scholar
Johnson, BJ (1983) Response to ethofumesate of annual bluegrass (Poa annua) and overseeded bermudagrass (Cynodon dactylon). Weed Sci 31:385–390 Google Scholar
Johnson, BJ, Duncan, R (2000) Timing and frequency of ethofumesate plus flurprimidol treatments on bermudagrass (Cynodon spp.) suppression in seashore paspalum (Paspalum vaginatum). Weed Technol 14:675–685 Google Scholar
Johnston, CR, McCullough, PE (2014) Flazasulfuron tank mixtures with amicarbazone for annual bluegrass control in seashore paspalum. Appl Turfgrass Sci DOI: Google Scholar
McCullough, PE, Hart, SE, Weisenberger, D, Reicher, ZJ (2010) Amicarbazone efficacy on annual bluegrass and safety on cool-season turfgrasses. Weed Technol 24:461–470 Google Scholar
McCullough, PE, Yu, J, Barreda, DG (2012) Seashore paspalum (Paspalum vaginatum) tolerance to pronamide applications for annual bluegrass control. Weed Technol 26:289–293 Google Scholar
Philbrook, BD, Kremer, M, Mueller, KH, Deege, R (1999) BAY MKH 3586—a new herbicide for broad spectrum weed control in corn (maize) and sugarcane. Brighton Conference. Weeds 1:29–34 Google Scholar
Senseman, SA, ed (2007) Herbicide Handbook. 9th edn. Lawrence, KS: Weed Science Society of America, Pp 128–129; 288–289.Google Scholar
Toler, JE, Wills, TG, Esters, AG, McCarty, LB (2007) Postemergent annual bluegrass control in dormant nonoverseeded bermudagrass turf. HortScience 42:670–672 Google Scholar
Trenholm, LE, Carrow, RN, Duncan, RR (2000) Mechanisms of wear tolerance in seashore paspalum and bermudagrass. Crop Sci 40:1350–1357 Google Scholar
Unruh, JB, Stephenson, DO, Brecke, BJ, Trenholm, LE (2006) Tolerance of ‘Salam' seashore paspalum to postemergence herbicides. Weed Technol 20:612–616 Google Scholar
Yu, J, McCullough, PE (2012) Summer amicarbazone applications control tall fescue in bermudagrass. in Proceedings of the ASA, CSSA, and SSA International Annual Meeting. Cincinnati, OH. https://scisoc.confex.com/crops/2012am/ webprogram/Paper70867.html. Accessed July 7, 2014Google Scholar