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Brazilian peppertree and mangrove species response to foliar-applied novel auxin-type herbicides

Published online by Cambridge University Press:  05 May 2020

Stephen F. Enloe*
Associate Professor, Agronomy Department, University of Florida, Center for Aquatic and Invasive Plants, Gainesville, FL, USA
James K. Leary
Assistant Professor, Agronomy Department, University of Florida, Center for Aquatic and Invasive Plants, Gainesville, FL, USA
Candice M. Prince
Assistant Professor, Agronomy Department, University of Florida, Center for Aquatic and Invasive Plants, Gainesville, FL, USA
Benjamin P. Sperry
Research Assistant Scientist, University of Florida, Agronomy Department, Center for Aquatic and Invasive Plants, Gainesville, FL, USA
Dwight K. Lauer
Analyst, Silvics Analytic, Wingate, NC, USA
Author for correspondence: Stephen F. Enloe, Center for Aquatic and Invasive Plants, 7922 NW 71st Street, Gainesville, FL32653 (Email:


Brazilian peppertree (Schinus terebinthifolia Raddi) is an invasive shrub that is problematic in both freshwater wetlands and brackish mangrove communities. The complex structure, geographic remoteness, and general herbicide sensitivity of mangrove systems have resulted in great technical challenges for managers attempting selective S. terebinthifolia control. Recent advances in auxin herbicide technologies warrant herbicide screening to address this growing problem. Therefore, greenhouse experiments were conducted in 2018 and 2019 to evaluate four non-target mangrove species and S. terebinthifolia response to the three herbicides: aminocyclopyrachlor, aminopyralid, and florpyrauxifen-benyzl. Aminocyclopyrachlor controlled S. terebinthifolia, but was highly injurious to black mangrove [Avicennia germinans (L.) L.], red mangrove (Rhizophora mangle L.), white mangrove [Laguncularia racemosa (L.) C.F. Gaertn.], and buttonwood mangrove (Conocarpus erectus L.). Aminopyralid also controlled S. terebinthifolia but its impact varied across mangrove species. Laguncularia racemosa and C. erectus were highly sensitive to aminopyralid, R. mangle exhibited dose-dependent tolerance, and A. germinans was highly tolerant. Florpyrauxifen-benzyl failed to control S. terebinthifolia and resulted in severe injury to all four mangrove species. These results indicate differential responses to newer auxins in both the target response and non-target plant community of interest. The efficacy of aminopyralid on S. terebinthifolia, coupled with its selectivity on A. germinans warrants further testing.

Research Article
© Weed Science Society of America, 2020

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Associate Editor: Ryan M. Wersal, Minnesota State University


Alongi, DM (2002) Present state and future of the world’s mangrove forests. Environ Conserv 29:33134910.1017/S0376892902000231CrossRefGoogle Scholar
Anonymous (2017) Method® 240 SL product label. Cary, NC: Bayer CropScience LP. 10 pGoogle Scholar
Anonymous (2018a) Milestone® product label. Dow Publication No. D02-879-007. Indianapolis, IN: Dow AgroSciences LLC. 10 pGoogle Scholar
Anonymous (2018b) ProcellaCOR™ SC product label. SePRO Publication No. ProcellaCOR SC Spec_3-23-18_PA. Carmel, IN: SePRO Corporation. 5 pGoogle Scholar
Bell, M (2019) Evaluation of Novel Herbicides and Application Techniques for Brazilian Peppertree (Schinus terebinthifolia Raddi) Management. MS thesis. Gainesville: University of Florida. 127 pGoogle Scholar
Blouin, DC, Webster, EP, Bond, JA (2011) On the analysis of combined experiments. Weed Technol 25:165169CrossRefGoogle Scholar
Boyer, JN (2006) Shifting N and P limitation along a north-south gradient of mangrove estuaries in South Florida. Hydrobiologia 569:16717710.1007/s10750-006-0130-3CrossRefGoogle Scholar
Chen, R, Twilley, RR (1999) Patterns of mangrove forest structure and soil nutrient dynamics along the Shark River Estuary, Florida. Estuaries 22:95597010.2307/1353075CrossRefGoogle Scholar
Doren, RF, Jones, DT (1997) Management in Everglades National Park. Pages 275286in Simberloff, D, Schmitz, DC, Brown, TC, eds. Strangers in Paradise: Impact and Management of Nonindigenous Species in Florida. Washington, DC: Island PressGoogle Scholar
Enloe, SF, Lauer, DK (2017) Uruguay waterprimrose control with herbicides. J Aquat Plant Manag 55:7175Google Scholar
Enloe, SF, Loewenstein, NJ, Streett, D, Lauer, DK (2015) Herbicide treatment and application method influence root sprouting in Chinese tallowtree (Triadica sebifera). Invasive Plant Sci Manag 8:160168CrossRefGoogle Scholar
Ewe, S, Sternberg, L (2007) Water uptake patterns of an invasive exotic plant in coastal saline habitats and source. J Coastal Res 23:25526410.2112/1551-5036(2007)23[255:WUPOAI]2.0.CO;2CrossRefGoogle Scholar
Farnsworth, E, Ellison, A (1997) The global conservation status of mangroves. Ambio 26:328334Google Scholar
Glueckert, J, Enloe, SF (2019) Out with the Old World climbing fern, in with the new: evaluation of florpyrauxifen-benzyl and triclopyr for Lygodium microphyllum control in south Florida. Weed Science Society of America Abstracts 59:303Google Scholar
Jones, DT, Doren, RF (1997) The distribution, biology and control of Schinus terebinthifolius in southern Florida, with special reference to Everglades National Park. Pages 8193in Brock, JH, Wade, M, Pysek, P, Green, D, eds. Plant Invasions: Studies from North America and Europe. Leiden, Netherlands: BackhuysGoogle Scholar
Laegdsgaard, P, Johnson, C (2001) Why do juvenile fish utilise mangrove habitats? J Exp Mar Bio Ecol 257:22925310.1016/S0022-0981(00)00331-2CrossRefGoogle ScholarPubMed
Langeland, KA, Cherry, HM, McCormick, CM, Craddock Burks, KA (2008) Identification and Biology of Nonnative Plants in Florida Natural Areas. Gainesville, FL: University of Florida IFAS Communications Services. 193 pGoogle Scholar
Leary, J, Gooding, J, Chapman, J, Radford, A, Mahnken, B, Cox, L (2013) Calibration of an herbicide ballistic technology (HBT) helicopter platform targeting Miconia calvescens in Hawaii. Invasive Plant Sci Manag 6: 29230310.1614/IPSM-D-12-00026.1CrossRefGoogle Scholar
Littell, RC, Milliken, GA, Stroup, WW, Wolfinger, RD, Schabenberger, O (2006) SAS® for Mixed Models. 2nd ed. Cary, NC: SAS Institute. 814 pGoogle Scholar
Manrique, V, Diaz, R, Erazo, L, Reddi, N, Wheeler, GS, Williams, D, Overholt, WA (2014) Comparison of two populations of Pseudophilothrips ichini (Thysanoptera: Phlaeothripidae) as candidates for biological control of the invasive weed Schinus terebinthifolia (Sapindales: Anacardiaceae). Biocontrol Sci Technol 24:51853510.1080/09583157.2013.878310CrossRefGoogle Scholar
Mikkelson, JR, Lym, RG (2013) Effects of aminopyralid on desirable forb species. Invasive Plant Sci Manag 6:303510.1614/IPSM-D-12-00034.1CrossRefGoogle Scholar
Mytinger, L, Williamson, GB (1987) The invasion of Schinus into saline communities of Everglades National Park. Florida Scientist 50:911Google Scholar
Nagelkerken, I, Blaber, SJM, Bouillon, S, Green, P, Haywood, M, Kirton, LG, Meynecke, JO, Pawlik, J, Penrose, HM, Sasekumar, A, Somerfield, PJ (2008) The habitat function of mangroves for terrestrial and marine fauna: a review. Aquat Bot 89:155185CrossRefGoogle Scholar
Odum, WE, McIvor, CC (1990) Mangroves. Pages 517548in Myers, RL, Ewel, JJ, eds. Ecosystems of Florida. Orlando: University of Central Florida PressGoogle Scholar
Richardson, RJ, Haug, EJ, Netherland, M (2016) Response of seven aquatic plants to a new arylpicolinate herbicide. J Aquat Plant Manag 54:2631Google Scholar
Snedaker, SC, Lahmann, EJ (1988) Mangrove understorey absence: a consequence of evolution? J Trop Ecol 4:31131410.1017/S0266467400002881CrossRefGoogle Scholar
Snedecor, GW, Cochran, WG (1989) Statistical Methods. 8th ed. Ames, IA: Iowa State University Press. 503 pGoogle Scholar
Sperry, BP, Dias, JLCS, Prince, CM, Ferrell, JA, Sellers, BA (2020) Relative activity comparison of aminocyclopyrachlor to pyridine carboxylic acid herbicides. Weed Technol 10.1017/wet.2019.129CrossRefGoogle Scholar
Teas, HJ (1976) Herbicide Toxicity in Mangroves. EPA-600/3-76-004. Gulf Breeze, FL: U.S. Environmental Protection Agency. 33 pGoogle Scholar
Tomlinson, PB (1994) The Botany of Mangroves. Cambridge: University of Cambridge Press. 419 pGoogle Scholar
Thayer, GW, Colby, DR, Hettler, WF (1987) Utilization of the red mangrove prop root habitat. Mar Ecol Prog Ser 35:253810.3354/meps035025CrossRefGoogle Scholar
Wang, L, Mu, M, Li, X, Lin, P, Wang, W (2011) Differentiation between true mangroves and mangrove associates based on leaf traits and salt contents. J Plant Ecol 4:292301CrossRefGoogle Scholar
Westing, AH (1971) Ecological effects of military defoliation on forests of South Vietnam. Biosci 21:893898CrossRefGoogle Scholar
Westing, AH (1972) Herbicides in war: current status and future doubt. Biol Cons 4:322327CrossRefGoogle Scholar