Surveys for Pathogens of Monoecious Hydrilla 2014
Abstract
This technical note describes the results of 2014 surveys in the Eastern United States for pathogenic agents on monoecious hydrilla. Monoecious hydrilla is increasingly becoming a problem in the United States. It was first discovered in Delaware in 1976 and later in the Potomac River (Haller 1982, Steward et al. 1984). Shortly after its discovery in 1982, Steward et al. (1984) predicted that monoecious hydrilla could potentially invade all of the lower 48 states as well as southern and central Canada. As of 2011, it had been reported from 23 states: Delaware, California, Connecticut, Maryland, North Carolina, Virginia, Pennsylvania, Washington, Indiana, Iowa, Kentucky, Massachusetts, Maine, Wisconsin, New Jersey, West Virginia, New York, Ohio, Missouri, South Carolina, Tennessee, Georgia, and Alabama1. Although the infestation in Iowa was never positively identified as monoecious, it is highly likely it was because the pistillate dioecious biotype is much more common in the Southeast than the Midwest. The Washington State population no longer exists due to an aggressive eradication program2. It is believed that populations in Iowa and Wisconsin have also been eradicated1. The most recent invasions have appeared in Lake Cayuga, the Erie Canal at North Tonawanda, upstate New York (Lansing Star 2012), and in the Croton River near New York City (DEC 2015).
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 2016
- Accession Number
- AD1010290
Entities
People
- Judy F. Shearer
Organizations
- Engineer Research and Development Center