Abstract:
Varieties of Egyptian and sea-island {G. harhadense L.) are more
susceptible to the disease than varieties of upland cotton {0. hirsutum
L.). In the western part of the Cotton Belt bacterial blight is considered second in importance only to cotton root rot. Losses due to the
disease are difficult to estimate because its effects are cumulative.
Plants are rarely killed, and destructive epidemics are infrequent, but
when these do occur, the affected leaves and bolls tend to shed rapidly.
Thus the set-back to the crop is not readily recognized as brought
about by disease except when stands of seedling plants are destroyed
by black arm