Air Potato (Dioscorea Bulbifera)

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Air potato (Dioscorea bulbifera) What is it? A vigorously twining, very invasive vine with heart-shaped leaves growing from an underground tuber. The Florida Exotic Pest Plant Council (www.fleppc.org) considers this one of Florida’s worst weed pests. Where is it from? Native to tropical Asia. How did it get here and when? Likely introduced as an ornamental and food plant around 1905. What harm does it cause? Grows rapidly, covering and displacing desirable native plant species needed by wildlife. How can I help? 1. Learn to identify air potato vines. Please don’t transport or plant the vines or “potatoes.” 2. Remove them from your home landscape and neighborhood. 3. If you see the vines or “potatoes” along our trails, please remove and bag them. Be sure to dispose of them in the trash cans on site. What more can I do? 1. Join the Friends of Red Bug Slough Preserve to help out with organized air potato removal events and “spud busting” work days. 2. Educate others to help them identify and remove this highly invasive pest plant. 3. For additional information on control, go to: http://bcrcl.ifas.ufl.edu/airpotatobiologicalcontrol.shtml The good news is…there is HOPE!! 1. The air potato leaf beetle (Lilioceris cheni) from China has been studied for several years and tested on hundreds of plant species to make sure it only feeds on air potato vines. 2. Extensive testing resulted in essentially no damage to any other plants. 3. The USDA has determined it’s now safe to request and release these beetles in Florida. 4. Air potato leaf beetles are now present at Red Bug Slough Preserve. Look for these small, bright red and black beetles on air potato vines showing extensive leaf damage. 5. Homeowners can order beetles for release in residential areas by filling out a request form at: http://bcrcl.ifas.ufl.edu/airpotatobiologicalcontrol.shtml www.scgov.net / Access19 / (941) 861-5000 .

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Weed Notes: Dioscorea Bulbifera, D. Alata, D. Sansibarensis Tunyalee
Weed Notes: Dioscorea bulbifera, D. alata, D. sansibarensis TunyaLee Morisawa The Nature Conservancy Wildland Invasive Species Program http://tncweeds.ucdavis.edu 27 September 1999 Background: Dioscorea bulbifera L. is commonly called air-potato, potato vine, and air yam. The genus Dioscorea (true yams) is economically important world-wide as a food crop. Two-thirds of the worldwide production is grown in West Africa. The origin of D. bulbifera is uncertain. Some believe that the plant is native to both Asia and Africa. Others believe that it is a native of Asia and was subsequently introduced into Africa (Hammer, 1998). In 1905, D. bulbifera was imported into Florida for scientific study. A perennial herbaceous vine with annual stems, D. bulbifera climbs to a height of 9 m or more by twining to the left. Potato vine has alternate, orbicular to cordate leaves, 10-25 cm wide, with prominent veins (Hammer, 1998). Dioscorea alata (white yam), also found in Florida, is recognizable by its winged stems. These wings are often pink on plants growing in the shade. Unlike D. bulbifera, D. alata twines to the right. Native to Southeast Asia and Indo-Malaysia, this species is also grown as a food crop. The leaves are heart-shaped like D. bulbifera, but more elongate and primarily opposite. Sometimes the leaves are alternate in young, vigorous stems and often one leaf is aborted and so the vine appears to be alternate, but the remaining leaf scar is still visible. Stems may root and develop underground tubers that can reach over 50 kg in weight if they touch damp soil.
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Air Potato Leaf Beetle Scientific Name:Lilioceris Cheni Gressitt and Kimoto (Coleoptera: Chrysomelidae)
Air Potato Leaf Beetle Scientific name: Lilioceris cheni Gressitt and Kimoto (Coleoptera: Chrysomelidae) Introduction Air potato, Dioscorea bulbifera L. (Dioscoreales: Dioscoreaceae), is a fast- growing perennial vine native to Asia and Africa. It has been introduced into the southeastern United States on multiple occasions and has become established in Hawaii, Florida, Georgia, Alabama, Mississippi, Louisiana and Texas. Currently air potato is registered as a noxious weed in Florida and Alabama (USDA 2015). In Louisiana, populations of D. bulbifera have been recorded in 13 parishes (Figure 1). The air potato vine quickly grows to cover large areas and outcompetes native vegetation. It proliferates freely from vegetative bulbils Figure 1. Distribution of air potato (Dioscorea bulbifera) in the United States. Source: EDDMapS.org formed in the leaf axils and is difficult to remove, requiring repeated mechanical and herbicidal treatments. A successful biological control program against D. bulbifera was initiated in Florida in 2011 using the air potato leaf beetle, Lilioceris cheni (Rayamajhi et al., 2014). Extensive laboratory and open field studies showed L. cheni to be extremely host-specific, feeding and developing only on D. bulbifera and not on related species of Dioscorea found in Florida including D. floridana, D. villosa, and D. sansibarensis (Lake et al., 2015). Rearing and release of L. cheni on public and private lands is currently conducted by the United States Department of Agriculture (USDA), the Florida Department of Agriculture and Consumer Services (FDACS) and the University of Florida. Establishment of the beetle has been confirmed across Florida. Based on its success in Florida, there is reason to believe that L.
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Dioscorea Bulbifera) in Florida Author(S): Matthew D
Geographic Origins and Genetic Diversity of Air-Potato (Dioscorea bulbifera) in Florida Author(s): Matthew D. Croxton, Michael A. Andreu, Dean A. Williams, William A. Overholt, and Jason A. Smith Source: Invasive Plant Science and Management, 4(1):22-30. 2011. Published By: Weed Science Society of America DOI: http://dx.doi.org/10.1614/IPSM-D-10-00033.1 URL: http://www.bioone.org/doi/full/10.1614/IPSM-D-10-00033.1 BioOne (www.bioone.org) is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Web site, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/page/terms_of_use. Usage of BioOne content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. Invasive Plant Science and Management 2011 4:22–30 Geographic Origins and Genetic Diversity of Air-Potato (Dioscorea bulbifera) in Florida Matthew D. Croxton, Michael A. Andreu, Dean A. Williams, William A. Overholt, and Jason A. Smith* In Florida, air-potato is an invasive weed with high management priority, which may soon be targeted using classical biological control.
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Biological Control for Air Potato Has Arrived!
Biological Control for Air Potato Has Arrived! By Min Rayamajhi1, Eric Rohrig2, Ted Center1, Ellen Lake1, Melissa Smith1, Veronica Manrique3, Rodrigo Diaz3, Stephen Hight4, Allen Dray1, Kenneth Hibbard5 and William Overholt3 ir potato (Dioscorea bulbifera) in Florida may have finally met its match — a voracious leaf-feeding beetle from Asia named Lilioceris cheni. The beetle Awas first discovered in Nepal by scientists from the USDA/ARS Invasive Plant Research Laboratory in Fort Lauderdale (IPRL), and later the same species was found in the Yunnan Province of China. Adult beetles are either bright red (Chinese biotype) or brown (Nepalese biotype), and about 9 mm (3/8”) long (Figure 1). They live for up to six months, during which they lay as many as 4,000 eggs. Females lay eggs in clusters on the undersides of young, expanding S. PORTER S. Figure 1a. Adult Lilioceris cheni, Chinese. air potato leaves (Figure 2). Adult females bite the veins of the leaves on which they oviposit, causing the expanding leaves to curl at the edges and cup the eggs, perhaps providing some protection from inclement weather or egg predators. Eggs hatch in about 4 days, and the reddish colored larvae feed on leaves for around 10 days (Figure 3). Late stage larvae and adults occasionally feed on bulbils (aerial tubers). Fully mature larvae drop to the ground and burrow into the soil where they secrete a whitish oral substance that hardens into a cocoon. Several pupae often clump together within this material. Adults emerge from the soil after about 16 days and begin to lay eggs 15 days later (Tishechkin et W.
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Lilioceris Egena Air Potato Biocontrol Environmental Assessment
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Orange River Preserve Plant Species List
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Air Potato, Dioscorea Bulbifera 1 Christopher Kerr2 and Ryan Poffenberger2
Methods Circular No. 1 Florida Department of Agriculture and Consumer Services October 2016 Division of Plant Industry Quick Identification Guide: Air Potato, Dioscorea bulbifera 1 Christopher Kerr2 and Ryan Poffenberger2 INTRODUCTION: The invasive air potato vine has become a major concern throughout Florida and neighboring states. Currently, the air potato leaf beetle, Lilioceris cheni, is being mass-reared and released across the region through collaborative efforts between the United States Department of Agriculture, Agricultural Research Service (USDA-ARS); the Florida Department of Agriculture and Consumer Services, Division of Plant Industry (FDACS-DPI); and the University of Florida (UF). A major component of this biological control program is the inclusion of releases on private lands which allows the identification of and release onto infestation sites which otherwise may not have been found or accessible. The air potato leaf beetle will only feed on air potato (Pemberton and Witkus 2015); shipping beetles to sites that do not contain the target plant will hinder the success of this biological control program. The following identification guide provides individuals the tools needed to verify that weedy vines are actually air potato. This helps to avoid disappointment from lack of results on the part of the requesting individual(s) and limits unnecessary costs to the program. C. Kerr (FDACS DPI) 1 Methods Contribution No. 1, Bureau of Methods Development and Biological Control 2 Florida Department of Agriculture and Consumer Services, Division of Plant Industry, Gainesville, FL 32608 AIR POTATO VINE: Growth Characteristics Air potato is a perennial, inedible yam; while it will die back during the winter months, it will readily grow back each spring from its underground tuber.
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Flora of Australia, Volume 46, Iridaceae to Dioscoreaceae
FLORA OF AUSTRALIA Volume 46 Iridaceae to Dioscoreaceae This volume was published before the Commonwealth Government moved to Creative Commons Licensing. © Commonwealth of Australia 1986. This work is copyright. You may download, display, print and reproduce this material in unaltered form only (retaining this notice) for your personal, non-commercial use or use within your organisation. Apart from any use as permitted under the Copyright Act 1968, no part may be reproduced or distributed by any process or stored in any retrieval system or data base without prior written permission from the copyright holder. Requests and inquiries concerning reproduction and rights should be addressed to: [email protected] FLORA OF AUSTRALIA The nine families in this volume of the Flora of Australia are Iridaceae, Aloeaceae, Agavaceae, Xanthorrhoeaceae, Hanguan- aceae, Taccaceae, Stemonaceae, Smilacaceae and Dioscoreaceae. The Xanthorrhoeaceae has the largest representation with 10 genera and 99 species. Most are endemic with a few species of Lomandra and Romnalda extending to neighbouring islands. The family includes the spectacular blackboys and grass-trees. The Iridaceae is largely represented by naturalised species with 52 of the 78 species being introduced. Many of the introductions are ornamentals and several have become serious weeds. Patersonia is the largest genus with all 17 species endemic. Some of these are cultivated as ornamentals. The Dioscoreaccae is a family of economic significance, particularly in the old world tropics where some species are cultivated or collected for their tubers and bulbils. In Australia there are 5 species, one of which is a recent introduction. The endemic and native species, commonly known as yams, are traditionally eaten by the Aborigines.
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Air Potato (Dioscorea Bulbifera) Plants Displaying Virus-Like Symptoms Are Co-Infected with a Novel Potyvirus and a Novel Ampelovirus
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TROPICAL YAMS and THEIR POTENTIAL Part 2. Dioscorea Bulbifera
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Potentiality of Underutilized Crop Dioscorea Spp.: a Source of Nutraceutical
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