Hostname: page-component-848d4c4894-cjp7w Total loading time: 0 Render date: 2024-07-07T22:29:48.476Z Has data issue: false hasContentIssue false
  • English
  • Français

Evaluation of Verticutting and Herbicides for Tropical Signalgrass (Urochloa subquadripara) Control in Turf

Published online by Cambridge University Press:  02 May 2018

David G. Pearsaul ,
Ramon G. Leon ,
Brent A. Sellers ,
Maria L. Silveira  and
D. Calvin Odero
David G. Pearsaul
Affiliation:
Graduate Student, Agronomy Department, University of Florida, Gainesville, FL, USA
Ramon G. Leon*
Affiliation:
Assistant Professor, Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, USA
Brent A. Sellers
Affiliation:
Professor, Agronomy Department, University of Florida Range Cattle Research and Education Center, Ona, FL, USA
Maria L. Silveira
Affiliation:
Associate Professor, Soil and Water Science Department, University of Florida Range Cattle Research and Education Center, Ona, FL, USA
D. Calvin Odero
Affiliation:
Associate Professor, Agronomy Department, University of Florida Everglades Research and Education Center, Belle Glade, FL, USA
*
Author for correspondence: Ramon G. Leon, Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC 27695. (Email: [email protected])
Get access Rights & Permissions [Opens in a new window]

Abstract

Tropical signalgrass (TSG) is one of the most problematic weeds found on golf courses, sports fields, and sod farms in south Florida. The recent ban of monosodium methane-arsonate (MSMA), an organic arsenical herbicide, from urban areas in Florida has left turfgrass managers searching for effective management options. In an effort to avoid relying solely on POST chemical control, this research examined the effect of combining a cultural practice, verticutting, along with PRE and POST herbicides as an integrated weed management approach to controlling TSG in hybrid bermudagrass. Field experiments were conducted at multiple locations over 2 yr in south Florida to: (1) determine whether verticutting before herbicide applications increases TSG control and (2) identify herbicide programs that effectively control TSG. No interactions between verticutting and herbicide programs were detected, but verticutting consistently provided a slight reduction (8% averaged across herbicide treatments) in TSG cover. Treatments containing a PRE herbicide resulted in a significant reduction (20% to 50%) in TSG cover at 52 wk after initial treatment (WAIT), while some POST herbicide treatments reduced TSG cover to <20% at 52 WAIT. A study was conducted to determine which POST herbicide combinations were most efficacious in controlling TSG. Amicarbazone alone provided ≤35% TSG control at 8 and 12 WAIT, but synergistic responses were observed between amicarbazone and mesotrione, trifloxysulfuron, and thiencarbazone+foramsulfuron+halosulfuron. Two- and three-way combinations of amicarbazone with these POST herbicides resulted in >80% TSG control at 4, 8, and 12 WAIT, with some reaching 100% TSG control at 4 WAIT. Based on these data, verticutting may provide limited complementary control, but certain combinations of POST herbicides exhibited excellent (>95%) TSG control.

Keywords

Patrick E. McCullough, University of GeorgiaAmicarbazoneforamsulfuronhalosulfuronmesotrionemonosodium methane-arsonate (MSMA)thiencarbazonetrifloxysulfuronhybrid bermudagrass, Cynodon dactylon (L.) Pers. X Cynodon transvaalensis Burtt-Davy, cv. ‘Tifway 419’smallflowered alexandergrass (syn. tropical signalgrass), Urochloa subquadripara (Trin.) R.D. WebsterCultural practicesintegrated weed managementverticutting
Type
Weed Management-Other Crops/Areas
Information
Weed Technology , Volume 32 , Issue 4 , August 2018 , pp. 392 - 397
Copyright
© Weed Science Society of America, 2018 

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

Abendroth, JA, Martin, AR, Roeth, FW (2006) Plant response to combinations of mesotrione and photosystem II inhibitors. Weed Technol 20:267–274 Google Scholar
Anonymous (2014) Xonerate® herbicide product label. Cary, NC: Arysta LifeScience North America, LLC. 30 pGoogle Scholar
Armel, GR, Rardon, PL, McComrick, MC, Ferry, NM (2007) Differential response to several carotenoid biosynthesis inhibitors in mixtures with atrazine. Weed Technol 21:947–953 Google Scholar
Bergkvist, G, Ringselle, B, Magnuski, E, Mangerud, K, Brandsaeter, L (2017) Control of Elymus repens by rhizome fragmentation and repeated mowing in a newly established white clover sward. Weed Res 57:172–181 Google Scholar
Brosnan, J, Steckel, L, Armel, G (2009) EPA Decision on the Use of Organic Arsenical Herbicides for Weed Management. University of Tennessee Agricultural Extension Service. W222 06/09 09-0266Google Scholar
Brosnan, JT, Breeden, GK, McCullough, PE, Henry, GM (2012) PRE and POST control of annual bluegrass (Poa annua) with indaziflam. Weed Technol 26:48–53 Google Scholar
Busey, P (2003) Cultural management of weeds in turfgrass. Crop Sci 43:1899–1911 Google Scholar
Busey, P, Johnston, DL (2006) Impact of cultural factors on weed populations in St. Augustine turf. Weed Sci 54:961–967 Google Scholar
Colby, SR (1967) Calculating synergistic and antagonistic responses of herbicide combinations. Weeds 15:20–22 Google Scholar
Cross, RB, McCarty, LB, Estes, AG (2016) Postemergence tropical signalgrass (Urochloa subquadripara) control with nonorganic arsenical herbicides. Weed Technol 30:815–821 Google Scholar
Danyal, S, Bhowmik, PC, Anderson, RL, Shrestha, A (2008) Revisiting the perspective and progress of integrated weed management. Weed Sci 56:161–167 Google Scholar
Dayan, FW, Trindale, MLB, Velini, ED (2009) Amicarbazone, a new photosystem II inhibitor. Weed Technol 57:579–583 Google Scholar
Harker, KN, O’Donovan, JT (2013) Recent weed control, weed management, and integrated weed management. Weed Technol 27:1–11 Google Scholar
Henry, GM, Brosnan, JT, Breeden, GK, Cooper, T, Beck, LL, Straw, CM (2012) Indaziflam programs for weed control in overseeded bermudagrass turf. HortTechnology 22:774–777 Google Scholar
Hugie, JA, Bollero, GA, Tranel, PJ, Riechers, DE (2008) Defining the rate requirements for synergism between mesotrione and atrazine in redroot pigweed (Amaranthus retroflexus). Weed Sci 56:265–270 Google Scholar
McCarty, B, Estes, A (2014) Tropical signalgrass control. Golf Course Manag 82:80–85 Google Scholar
McCarty, LB, Miller, LC, Colvin, DL (1991) Bermudagrass (Cynodon spp.) cultivar response to diclofop, MSMA, and metribuzin. Weed Technol 5:27–32 Google Scholar
McCullough, PE, Johnston, CR, Reed, TV, Yu, J (2015) Indaziflam enhances buckhorn plantain (Plantago lanceolata) control from postemergence herbicides. Weed Technol 29:147–153 Google Scholar
Murphy, TR, Colvin, DL, Dickens, R, Everest, JW, Hall, D, McCarty, LB (1992) Weeds of southern turfgrasses. Gainesville, FL: Florida Cooperative Extension Service. 208 pGoogle Scholar
Shaner, DL (2014) Herbicide Handbook. 10th ed. Lawrence, KS: Weed Science Society of America. Pp 234–235, 245–246, 443–444, 463–464Google Scholar
Speedy, A (2002) Brachiaria subquadripara (Tan.) Hitchc. Food and Agricultural Organizations of the United States. http://www.fao.org/ag/agp/agpc/doc/gbase/data/pf000194.htm. Accessed: October 17, 2002Google Scholar
Swanton, CJ, Mahoney, KJ, Chandler, K, Gulden, RH (2008) Integrated weed management: knowledge-based weed management systems. Weed Sci 56:168–172 Google Scholar
Teuton, TC, Brecke, BJ, Unruh, JB, Macdonald, GE, Miller, GL, Ducar, JT (2004a) Factors affecting seed germination of tropical signalgrass (Urochloa subquadripara). Weed Sci 52:376–381 Google Scholar
Teuton, TC, Unruh, JB, Brecke, BJ, MacDonald, GE, Miller, GL, Ducar, JT (2004b) Tropical signalgrass (Urochloa subquadripara) control with preemergence- and postemergence-applied herbicides. Weed Technol 18:419–425 Google Scholar