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Merremia tuberosa (vine, climber)    |
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Management Information
Preventative measures: A Risk Assessment of Merremia tuberosa for Hawai‘i and other Pacific islands was prepared by Dr. Curtis Daehler (UH Botany) with funding from the Kaulunani Urban Forestry Program and US Forest Service. The alien plant screening system is derived from Pheloung et al. (1999) with minor modifications for use in Pacific islands (Daehler et al. 2004). The result is a 'High Risk' score of 12 and a recommendation of: "Likely to cause significant ecological or economic harm in Hawai‘i and on other Pacific Islands as determined by a high WRA score, which is based on published sources describing species biology and behaviour in Hawai‘i and/or other parts of the world." Chemical: A study evaluated two types of herbicide applied by backpack sprayer for the treatment of M. tuberosa in Florida. Garlon 4 at 10% concentration applied to the basal surface of M. tuberosa was evaluated to achieve excellent control. Garlon 3A at 50% applied to cut surfaces of M. tuberosa achieved good control. Both herbicides are recommended to be applied to cut stems as it is evident which stems were effectively treated and which were missed within a week of application (Kline & Duquesnel, 1996; Langland & Stocker, 2001). Physical: Seedlings of M. tuberosa may be hand-pulled (PIER, 2008).
Biological control: The use of a biological control for M. tuberosa has been recommended and is being investigated (Dovey et al, 2004).
Location Specific Management InformationFlorida (USA)
Merremica tuberosa was included as a category II invasive on Florida's 2009 List of Invasive Plant Species. It is also a Miami-Dade County prohibited plant that may not be planted in Dade County and must be removed from sites upon development. It has also been included in a "do not sell" list of plant species released by Florida Nursery, Growers & Landscape Association in 2001 (FLEPPC, 2009; Hunsberger, 2001; USDA-APHIS, 2005). Samoa
Merremia tuberosa has been included on Samoa's invasive or potentially invasive plant species in Samoa list. It is being monitored for invasive impacts (Govt of Samoa, 2004; Space & Flynn, 2002).
Management Resources/Links
1. Daehler, Curtis C. & Debbie A. Carino., 2000. Predicting invasive plants: prospects for a general screening system based on current regional models. Biological Invasions 2: 93–102, 2000. 2. Daehler, Curtis C., 1998. The taxonomic distribution of invasive angiosperm plants: Ecological insights and comparison to agricultural weeds. Biological Conservation Volume 84, Issue 2, May 1998, Pages 167-180 3. Dovey, L., Orapa, W. and Randall, S. 2004. The need to build biological control capacity in the Pacific. In: Proceedings of the XI International Symposium on Biological Control of Weeds (eds Cullen, J.M., Briese, D.T., Kriticos, D.J., Lonsdale, W.M., Morin, L. and Scott, J.K.) pp. 36 - 41. CSIRO Entomology, Canberra, Australia. 7. Hunsberger, Adrian G. B., 2001. Invasive and Banned Plants of Miami-Dade County. University of Florida Extension 9. Langeland, K.A. and R.K. Stocker., 2001. Control of Non-native Plants in Natural Areas of Florida. University of Florida Extension. This document is SP 242, one of a series of the Department of Agronomy, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. First printed: 1997. Revised: April, 2001. 10. Motooka, P. et al. 2003. Merremia tuberosa: Weeds of Hawai‘i’s Pastures and Natural Areas; An Identification and Management Guide, College of Tropical Agriculture and Human Resources, University of Hawai‘i at Mänoa. Results Page: 1
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