Zone de Texte: Naturally infected material (positive or negative) Retained samples (eg. Sticky plates, pheromone traps, …) Material produced and collected from test fields (eg. Tubers, soil, …) Photographs, drawings Zone de Texte: Type of Reference Material Zone de Texte: Naturally infected material (positive or negative) Retained samples (eg. Sticky plates, pheromone traps, …) Material produced and collected from test fields (eg. Tubers, soil, …) Photographs, drawings Zone de Texte: Type of Reference Material

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