Investigating Critical Levels of Dry Rotting of Yellow Yam (Dioscorea Cayenesis) Planing Material, the Benefits of Disinfesting the Heads of Pratylechus Coffeae and of After-Planing Nematicide Treatments

Abstract

Several noxious nematodes are associated with yams in Jamaica but Pratylenchus coffea is the only one found infesting yellow yam tubers affected by a dry rot called "burning". There was significantly less bearing plants in plots planted with the heavity dry-rotted undisinfested heads; greatest gross weights of tubers and marketable yams were borne in plots planted with lightly dry-rotted undisinfested heads.

Varios nematodos nocivos están asociados con el ñame en Jamaica, pero Pratylenchus coffea es el único que infesta los tubérculos de ñame amarillo afectados por una podredumbre seca llamada "quema". Hubo significativamente menos plantas productoras en las parcelas plantadas con las cabezas no desinfectadas de podredumbre seca pesada; Los mayores pesos brutos de tubérculos y ñame comercializables se produjeron en parcelas plantadas con espigas no infestadas, levemente podridas en seco.