 Zucchini yellow
mosaic virus
Devastation in 22 countries on 5 continents.
Originally discovered in France and Italy,
ZYMV has caused epidemics worldwide.
 Symptoms:
yellow mosaic, severe malformation. blisters, extreme reduction in the
size of leaf lamina, necrosis, and severe plant stunting. Squash also
develop knobby, malformed areas that develop deep longitudinal and
radial cracks. Control:
like all other aphid-transmitted viruses, ZYMV is extremely difficult
to control with insecticides, reflective mulches, and mineral oils.
Better results can be obtained with disease tolerant varieties like
Harris Moran's new varieties. |
