International Weed Science Congress

The International Weed Science Society (IWSS) was formed in 1975, by individuals from Europe, North America, South America, and the Asian-Pacific area, to deal with global weed science issues. The Society has held six highly successful International Weed Control Congresses, in Australia (1992), Denmark (1996), Brazil (2000), South Africa (2004), Canada (2008) and China (2012).

The IWSS is a worldwide scientific organization, open to all who are interested in weeds and their control. The formation of IWSS was promoted actively by the six existing regional weed science societies. The purpose of IWSS is to supplement and complement their vital role. Additionally, IWSS provides benefits and functions of a weed science society not currently existing at a national or regional level.

The IWSS publishes a newsletter that is sent to members twice a year and holds the International Weed Control Congress every four years.

The objectives of the Society, as cited in its constitution include:

• Encourage, promote, and assist development of global weed science and weed control technology
• Promote and assist international communications between individuals and organizations
• Promote and assist development of special symposia on topics of international interest
• Encourage and assist education and training in weed science and technology
• Provide a calendar of important weed science events
• Maintain liaison with relevant national and international organizations
• Stimulate research, extension, and regulatory programs to answer changing weed problems
• Encourage and assist in development of weed science societies.

To provide an international forum to deal with global weed problems by:

• organizing congresses, and collaborating in organizing meetings and courses.
• publishing and participating in publishing newsletters, proceedings, and monographs.

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