Zone de Texte: Often greater in assessment of environmental risks than in risks to cultivated plants due to lack of information additional complexity associated with ecosystems variability associated with pests, hosts or habitats Phytosanitary measures are intended to account for uncertainty and should be designed in proportion to the risk. ? Intentional introduction of plants with a high level of uncertainty: possibly no phytosanitary measures at import, but surveillance after entry. The phenomenon of Zone de Texte: Uncertainty 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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