Resumen
The chloroplast-agglutination serologic technique as used to determine the prevalence of infection by Potato Virus X in six commercial plantations of this crop ( Solanum tuberosum L. ) in the potato growing area near the Irazu Volcano, Cartago, Costa Rica. Of 611 plants examined 9 0% were infected. The use of the chloroplast-agglutination technique proved to be quite convenient in surveying a large number of plants for PVX.
Mediante el empleo de la técnica de aglutinación de cloroplastos se determinó la prevalencia del virus X en seis plantaciones comerciales de papa (Solanum tuberosum L.) de la zona papera del Volcán Irazú, Cartago, Costa Rica. De las 611 plantas examinadas el 90% resultaron infectadas.