Zone de Texte: Prevention of introduction of invasive alien species harmful to plants or selection of adequate control strategies if introduction could not be prevented Assessment of intentionally imported plants Consequences on environment and biodiversity Differentiation intended / unintended habitat Indirect effects on plants or on plant health in ecosystems or habitats Precautionary approach Zone de Texte: Guidance on PRA: Standards by IPPC and EPPO 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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