Hostname: page-component-76fb5796d-2lccl Total loading time: 0 Render date: 2024-04-25T11:48:58.442Z Has data issue: false hasContentIssue false
  • English
  • Français

Triclopyr Absorption and Translocation by Eurasian Watermilfoil (Myriophyllum spicatum) Following Liquid and Granular Applications

Published online by Cambridge University Press:  20 January 2017

Joseph D. Vassios ,
Scott J. Nissen ,
Tyler J. Koschnick  and
Mark A. Heilman
Joseph D. Vassios
Affiliation:
Aquatic Territory Manager, United Phosphorous Incorporated, 630 Freedom Business Center, Suite 402, King of Prussia, PA 19408
Scott J. Nissen*
Affiliation:
Department of Bioagricultural Sciences and Pest Management, Colorado State University, Fort Collins, CO 80523
Tyler J. Koschnick
Affiliation:
SePRO Corporation, 11550 North Meridian Street, Suite 600, Carmel, IN 46032
Mark A. Heilman
Affiliation:
SePRO Corporation, 11550 North Meridian Street, Suite 600, Carmel, IN 46032
*
Corresponding author's E-mail: Scott.Nissen@Colostate.edu
Get access Rights & Permissions [Opens in a new window]

Abstract

One method that appears promising for the treatment of Eurasian watermilfoil in areas of high water exchange is the use of herbicide-impregnated granules. Experiments were conducted using liquid triclopyr-triethylamine and granules impregnated with triclopyr-triethylamine to test this theory. Uniform, multistemmed Eurasian watermilfoil plants were selected for these experiments. Plants were treated in clear acrylic cylinders containing 7 L of water with 0.5 mg/L triclopyr as the liquid triethylamine plus 20 kBq 14C-triclopyr or blank granules impregnated with triclopyr triethylamine plus 20 kBq of 14C-triclopyr. Plants were harvested 6, 12, 24, 48, 96, and 192 h after treatment (HAT) and the radioactivity in the apical meristems, remaining shoot and root was determined with sample oxidation and liquid scintillation spectroscopy. There were no significant differences in overall herbicide absorption by Eurasian watermilfoil following liquid and granular triclopyr treatments; however, differences were observed between plant parts. Apical meristems accumulated the most radioactivity, whereas roots accumulated very little radioactivity following liquid treatment. Granular applications resulted in 7.5 times more radioactivity in the Eurasian watermilfoil roots then the liquid triclopyr application; therefore, long-term control of well-established Eurasian watermilfoil plants could improve with granular applications, especially in areas where rapid herbicide dilution could be an issue.

Keywords

TriclopyrEurasian watermilfoil, Myriophyllum spicatum LAquatic applicationsgranular formulationsherbicide absorptionherbicide translocationliquid formulationstriclopyr
Type
Physiology, Chemistry, and Biochemistry
Information
Weed Science , Volume 62 , Issue 1 , March 2014 , pp. 22 - 28
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

Barko, JW, Hardin, DG, Matthews, MS (1982) Growth and morphology of submersed fresh-water macrophytes in relation to light and temperature. Can J Bot. 60:877–887 CrossRefGoogle Scholar
Fox, AM, Haller, WT, Getsinger, KD, Petty, DG (2002) Dissipation of triclopyr herbicide applied in Lake Minnetonka, MN concurrently with Rhodamine WT dye. Pest Manage Sci. 58:667–686 Google Scholar
Getsinger, KD, Petty, DG, Madsen, JD, Skogerboe, JG, Houtman, BA, Haller, WT, Fox, AM (2000) Aquatic dissipation of the herbicide triclopyr in Lake Minnetonka, Minnesota. Pest Manag Sci. 56:388–400 3.0.CO;2-U>CrossRefGoogle Scholar
Gettys, LA, Haller, WT, Bellaud, M (2009. Biology and Control of Aquatic Plants: A Best Management Practices Handbook. Marietta, GA Aquatic Ecosystem Restoration Foundation. 214 pGoogle Scholar
Green, WR, Westerdahl, HE (1990) Reponse of Eurasian watermilfoil to 2,4-D concentration and exposure times. J Aquat Plant Manage 28:27–32 Google Scholar
Kniss, AR, Vassios, JD, Nissen, SJ, Ritz, C (2011) Nonlinear regression analysis of herbicide absorption studies. Weed Sci. 59:601–610 CrossRefGoogle Scholar
Koschnick, TJ, Petty, DG, Johnson, B, Hulon, C, Hastie, B (2010) Comparative aquatic dissipation rate following applications of Renovate OTF granular herbicide and Rhodamine WT liquid. J Aquat Plant Manage 48:34–39 Google Scholar
Netherland, MD, Getsinger, KD (1992) Efficacy of triclopyr on Eurasian watermilfoil—concentration and exposure time effects J Aquat Plant Manage. 30:1–5 Google Scholar
Netherland, MD, Getsinger, K., Turner, EG (1993) Fluridone concentration and exposure time requirements for control of Eurasian watermilfoil and hydrilla. J Aquat Plant Manage 31:189–194 Google Scholar
Senseman, SA (2007. Herbicide Handbook. 9th edn. Lawrence, KS Weed Science Society of America. 458 pGoogle Scholar
[USDA] U.S. Department of Agriculture. (2011) Myriophyllum spicatum L. Eurasian watermilfoil. Available at http://plants.usda.gov/java/profilesymbol=MYSP2. Accessed October 24, 2011.Google Scholar
Vassios, JD, Nissen, SJ, Brunk, GR (2011a) Imazamox absorption, desorption, and metabolism by Eurasian watermilfoil. J Aquat Plant Manage 49:44–49 Google Scholar
Vassios, JD, Nissen, SJ, Koschnick, TJ, Heilman, MA (2011b. Fluridone, penoxsulam, and triclopyr absorption and by Eurasian watermilfoil and hydrilla. Proceedings of the 51st Annual Meeting, Baltimore, MD, July 24–27. Vicksburg, MS Aquatic Plant Management Society. 46 pGoogle Scholar
Wetzel, RG (2001. Limnology: Lake and River Ecosystems. 3rd edn. San Diego, CA Academic Press. 1006 pGoogle Scholar