See also:

• Science: Environment: Biodiversity: Invasive Species: Terrestrial: Plants  (41)

• Amenity Weed Identification - Photographs of weed species commonly found in the UK and information on herbicides from Bayer Environmental Science.
• California Noxious Weed Control Projects Inventory - A combined government/private/non-profit endeavour to establish a database, accessible through the Internet, containing information on noxious weed control in California.
• Environmental Weeds Action Network (EWAN) - A community initiative to tackle the problem of environmental weeds in bushland and waterways in Australia.
• Environmental Weeds in Australia - Brief introduction to some major environmental weeds in Australia, with photos.
• Flame Weeding for Agronomic Crops - Article discussing the use of flame weeders to control weeds before or after germination of the crop.
• HDRA Organic Weed Management - This project aims to be a primary resource on weed management for organic farms, reporting on the latest weed information, weeding techniques and weed research.
• Identification of Vine Weeds in Florida Citrus - Photographs and identifying features of the commonly occurring climbing weeds.
• Integrated Weed Control - Biological products and consulting services for weed management. Montana.
• International Parthenium Research News Group - Resources on this noxious weed for scientists and researchers. Includes a news group, picture gallery, scientists directory, references and links.
• International Survey of Herbicide Resistant Weeds - Information about weeds and their identification, control and herbicide resistance. A global collaborative effort.
• Iowa State Weed Science - Detailed information and articles covering all aspects of agricultural weed science.
• King County Noxious Weed List - Weed identification in Washington State, USA.
• Management of Problematic Aquatic Weeds in Africa - Information from the FAO on this subject with particular reference to water hyacinth, water lettuce and water fern.
• National Weeds Strategy - Weeds of National Significance - Australian site promoting key weed policies, regulations, current issues, national initiatives, research, extension training and personnel.
• New Jersey Agricultural Weed Gallery - Includes brief details, and photographs of the important weeds of NE United States.
• Noxious Weeds in the US and Canada - Searchable database of the noxious weed lists for all U.S. states and six southern provinces of Canada.
• Pacific North West Weed Management Handbook - Information on dealing with weeds found in this region including a weed identification image collection.
• Principles of Sustainable Weed Management for Croplands - Article discussing several alternatives to conventional tillage systems, including allelopathy, intercropping, crop rotations and a weed-free cropping design.
• Procedures for Weed Risk Assessment - Information from the FAO on what should be done prior to the importation of plants to evaluate the likelihood of them becoming nuisance weeds. [PDF]
• A Review of Non-Chemical Weed Management - Organic farmers cite weed control as the most significant problem they encounter. This article discusses possible solutions in depth. [PDF]
• Turf Weed Identification - Photographs of weed species that may invade grassland and information on herbicides from Bayer Environmental Science.
• UNL Weedscience - This University of Nebraska program conducts research into herbicides and weed types. Page includes list of publications and news.
• Virginia Tech Weed Identification Guide - Images and descriptions of many species of terrestrial and aquatic weeds in Virginia.
• Weed Definitions and FAQs - Information from the NSW Department of Primary Industries in Australia on weeds classed as noxious that need to be eliminated, those that threaten the environment and agricultural weeds.
• Weed Identification - Key and species accounts for 172 species from the University of Illinois.
• Weed Management for Developing Countries - Information from the FAO on improved weed management, problem weeds in crop and non-crop situations and management options and perspectives.
• Weed Research and Information Center - An interdisciplinary collaboration that fosters research in Weed Management and facilitates distribution of associated knowledge for the benefit of agriculture and for the preservation of natural resources.
• Weed Science Society of America - Publishers of Weed Technology, which includes original research on weed biology and control, weed and crop management systems and reports of new problems.
• Weeds Australia - Australian Weeds Committee site promoting key weed policies, regulations, current issues, national initiatives, research, extension training and personnel.
• Weeds Management - Information on Australian weeds with guides to identification and control.
• Weeds Society of Western Australia - Includes scientists, consultants, company representatives, conservationists, other practitioners and members of the public who have an interest in weed management