Florida Agricultural Experiment Station


maturity of the fruit. The breakdown of the rind is greatly ac-
centuated when such fruit is placed in cold storage.
 GREASY SPOT
 Greasy spot, black melanose, or false melanose as this trouble
is variously termed, is a characteristic spotting of citrus leaves


 Fig. 78.-Storage spot developed on Pineapple orange while in the
 coloring room.
that is of general occurrence throughout the groves of Florida,
especially in the southern part of the state. Greasy spot also
occurs in the West Indies, China, Japan, Java, and the Philip-
pine Islands. While severe cases of greasy spot may cause more
or less injury to the affected leaves, this trouble usually is re-
garded as a relatively unimportant one.
 SYMPTOMS OF GREASY SPOT
 Greasy spot, which is known to occur only on the leaves, is
especially common on grapefruit, although it is found frequently