See weed identification resources.
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Composite List of Weeds (Search the database)
Herbicide-resistant biotypes are becoming increasingly common since the first reports of their occurrence in the 1950s. These biotypes survive herbicide application at doses that usually give effective control of the species
It is the position of the WSSA to promote the development and implementation of biological control methods as a component of weed management strategies.
See chemical structures, common herbicide names and manufactures, regulatory links and time-lapsed photos.
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USDA, APHIS, PPQ’s Center for Plant Health Science and Technology began staffing scientists in 1997 for what was to become the newly created Plant Epidemiology and Risk Analysis Laboratory (PERAL).
Plants that are allergenic or that cause dermatitis or mechanical injury are annoying, but the victim usually recovers. Plants that are poisonous when eaten, however, may cause serious illness or even death.
For the 40-50 million allergy sufferers in America, inhaling airborne allergens can produce a variety of allergic symptoms and because pollen grains are small and buoyant, they can remain airborne for hundreds of miles.
- Chair, Department of Plant & Soil Science with Texas Tech University in Lubbock, TX
- Post Doctoral Associate in Weed Science with University of Arkansas in Fayetteville, AR
- Biological Control of Aquatic Weeds with USDA-ARS Invasive Plant Research Lab in Ft. Lauderdale, Florida
- Small Farms Advisor with University of California, Agriculture and Natural Resources in Fresno, California
- Area Viticulture Advisor: UCCE Kern, Kings, Tulare with UC Agriculture and Natural Resources in Bakersfield
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