Disease management module -
Fungal
Bacterial & Other Diseases
Bacterial Diseases : They can
cause a variety of symptoms including cankers, leaf spots, overgrowths, scabs,
wilts, and others
Others: This disease attack can
causes reduction in photosynthetic activity and defoliation of leaves thereby
reducing the vitality of the host plant.
Fungal Diseases-
Die back
Caused by Botryodiplodia theobromae
Discoloration and darkening of bark
some distance from the tip, This blackness
advances
Young green leaves start withering –
first at the base and extends outwards along the vein
Fungal disease - Die back
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Die back:
It attacks the plant; as a result the twigs dry off. Drying of twigs and
branches followed by complete defoliation gives the tree an appearance
of scorching by fire. Discoloration and darkening of the bark occurs
some distance from the tip of the twigs.
The dark area advances and young green leaves start withering
first at the base and then extending outwards along the vein. The
affected leaves turn brown and its margins roll upward. At this stage,
the twig or branch dies, leaves shrivel and fall. This may be
accompanied by exudation of gum. The infected twigs show internal
discoloration. The association of a beetle (Xyleborusaffinis) has also
known to increase the disease incidence and hence need to be controlled
for disease management.
