Principal source: Burma Reed Neyraudia reynaudiana (Kunth) Keng ex A.S. Hitchc. (Rasha, 1999)
Compiler: National Biological Information Infrastructure (NBII) & IUCN/SSC Invasive Species Specialist Group (ISSG)
Review: Joe Maguire, Natural Areas Manager. Park & Recreation Department, Florida USA and Renee Rasha, M.S., Nature Center Program Coordinator, Grassy Waters Preserve. West Palm Beach, Florida USA.
Publication date: 2005-07-03
Recommended citation: Global Invasive Species Database (2024) Species profile: Neyraudia reynaudiana. Downloaded from http://iucngisd.org/gisd/speciesname/Neyraudia+reynaudiana on 22-12-2024.
In South Florida Pine Rocklands, the native understory is typically 1-1.5 metres in height. Infestations of Neyraudia can raise the height of the understory to 4-5 metres. Neyraudia infestations of 30% cover increase the fuel load by 3 tons per 0.40 hectare (per acre). When wildfires occur under these conditions, Neyraudia promotes much higher flamelengths and increased heat transfer into the slash pine canopy, frequently killing the overstory (Joe Maguire., pers.comm., 2004).
Integrated management: Its deep roots make mechanical removal an extremely labor intensive and costly undertaking and causes extensive disturbance to the soil. A more effective management approach involves a combination of cutting or prescribed burning, followed by application of herbicides. A 90% kill rate can be achieved by cutting culms with a steel bladed weed eater, allowing resprouting to 15 - 20 centimetres and applying Roundup (George Gann-Matzen of Ecohorizons, Inc., in Guala, 1990). It is recommended that the remaining plants be removed by hand and that the site be monitored for at least two years (George Gann-Matzen of Ecohorizons, Inc., in Guala, 1990). The cut culms should be removed in pineland situations so as not to add nutrients to the soil and hence, make a more suitable environment for other exotics (George Gann-Matzen of Ecohorizons, Inc., in Guala, 1990). By applying Roundup at 1% with a surfactant (Improve or the cheaper brand Frigat) at 1%, without cutting the culms, a 100% kill rate can be achieved (Terry and Barbara Glancy, private land owners in Homestead, in Guala, 1990). Guala (1990) states that a wick application of Roundup might be a reasonable course of action especially in areas in which small native herbs are still persisting within the population. Cutting or mowing alone does not work. Fire may even compound the problem by introducing disturbance. Mechanical removal may work if done by hand but bulldozing may also compound the problem due to the ability of the grass to resprout from rhizome segments. Rasha (1999) states that a successful burn reduces the plant’s massive stalks to ash, eliminating the cost of vegetation removal.
The Natural Areas Management Division of Miami-Dade County's Park & Recreation Department uses the following treatment regime: Cut and haul culms of dense clumps of Neyraudia. After the plants regrow to about .5 metres, treat the foliage with 5% Round Up Pro with a marker dye. Follow up treatment on individual stems: cut the stem with hand clippers. Treat the cut surface of the stem with a few drops of 10% Garlon 4. Garlon 4 is used so crew members don't have to carry an assortment of herbicide mixes. Exotic hardwoods and resprout of Neyraudia can be treated with the same mix) (Joe Maguire., pers.comm., 2004).