ABSTRACT

TUBERS: The nematode enters through lenticels, and white mealy spots form beneath the surface. Infested areas enlarge and coalesce, and the spots become light brown lesions visible from the surface (124). The texture of the lesion is granular and dry. As the infestation progresses, the affected tissues desiccate and shrink. The skin becomes dry, papery and cracked. With time, infested tissues darken and are prone to secondary invasion and rotting.