Zone de Texte: PRA: Differences in the assessment of plants Zone de Texte: invasive plants have effects on the environment, impacts are generally described in qualitative rather than in economic terms unintentional introduction: seeds or other propagules contaminating imported commodities intentional introduction: plants for agricultural or horticultural purposes from a traditional pest, you know before that it is able to cause damage - from a plant often not Zone de Texte: G. Schrader Federal Biological Research Centre for Agriculture and Forestry Zone de Texte: May 2005 Department for Plant Health

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