Accession Number : ADA304819

Title :   Field and Laboratory Studies of the Fungus Mycoleptodiscus Terrestris as a Potential Agent for Management of the Submersed Aquatic Macrophyte Hydrilla Verticillata.

Descriptive Note : Final rept.,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB

Personal Author(s) : Shearer, Judy F.

PDF Url : ADA304819

Report Date : JAN 1996

Pagination or Media Count : 33

Abstract : Laboratory and field studies were undeflaken to assess the potential of a fungal pathogen as a biocontrol agent for the management of Hydrilla verticillata (L. fil.) Royle. The pathogen previously reported to be Macrophornina phaseolina (Tassi) Goid was positively identified as a strain of Mycoleptodiscus terrestris (Gerd.) Ostazeski. Laboratory tests reconfirmed that M. terrestris produced characteristic disease symptoms on hydrilla tissues followed by a significant reduction in aboveground biomass. Assessment of M. terrestris in a field situation was conducted on hydrilla-planted ponds at the Lewisville Aquatic Ecosystem Research Facility. Aboveground biomass of the host plant was significantly reduced 4 weeks postinoculation with a mycelial matrix of the fungus.

Descriptors :   *FUNGI, *AQUATIC ORGANISMS, *AQUATIC PLANTS, LABORATORY TESTS, WATER, DISEASES, SIGNS AND SYMPTOMS, RESEARCH FACILITIES, ECOSYSTEMS, BIOMASS CONVERSION, BIOCIDES.

Subject Categories : Ecology
      Biology
      Hydrology, Limnology and Potamology

Distribution Statement : APPROVED FOR PUBLIC RELEASE