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    • First Report of Potato Spindle Tuber Viroid in Costa Rica 

      Badilla Porras, Ramsés; Hammond, Rosemarie W.; Rivera Herrero, Carmen (1999-11)
      During 1997 to 1998, symptoms of leaf roll, dwarfism, chlorosis, and occasional leaf necrosis were observed on Solanum tuberosum in several plots in Cartago, the principal potato-production region of Costa Rica. Because ...