Biology Reference
In-Depth Information
“red disease” caused by mites. The spores are var-
iable in size and number of cells, one to six. They
are embedded in a gelatinous matrix and are dis-
seminated in rain. The fungus apparently winters in
or on bulbs, infecting new leaves as they grow out
in spring.
Control
Treat suspected narcissus bulbs before
planting. Control secondary infection in the field
with bordeaux mixture. Discard seriously dis-
eased amaryllis bulbs; remove infected leaves
and bulb scales; avoid syringing and heavy
watering.
