Florida Agricultural Experiment Station


the occurrence of the trouble. No evidence of the trouble was
observed on oranges or tangerines in the groves where it was
prevalent on grapefruit.
 STORAGE SPOT OR "POX"
 Storage spot or "pox" is a trouble characterized by the de-
velopment of more or less numerous shallow, sunken spots on
citrus fruit kept in storage, especially in cold storage. Cold stor-


 Fig. 77.-Storage spot or "pox" on grapefruit.
age spots are light-colored to brown sunken areas in the rind,
varying in size and shape with the variety, thickness of the
rind, storage conditions, etc. They appear to develop especially
readily on grapefruit. The spotting begins on grapefruit as
small indentations of the rind on any part of the surface. These
sunken areas increase in size and may become 1/2 inch or more
in diameter and usually average about 1/25 inch in depth (Fig.