Agriculture Reference
In-Depth Information
Table 11.6.
Some important diseases and disorders of papaya.
Common name
Organism
Parts affected
Distribution
Phytophthora blight
Root, stem, fruit
Widespread
Phytophthora palmivora
Pythium root rot
Root
Widespread
Pythium aphnidermatum
Damping off
Seedling stem at soil line
Widespread
Pythium aphanidermatum,
P. ultimum, Phytophthora
palmivora, Rhizoctonia
sp.
Collar rot
Base of trunk, crown roots
Hawaii, Thailand
Calonectria crotalariae
Powdery mildew
Underside of leaves, petioles
Widespread
Oidium caricae
Alternaria fruit rot
Fruit body
Widespread
Alternaria alternata
Blackspot
Fruit body
Widespread
Cercospora papayae
Anthracnose,
chocolate spot
Ripe fruit body
Widespread
Colletotrichum gloeosporioides
Soft rot
Injured mature fruit at stem end
Widespread
Rhizopus stoloifer
Stem-end rot
Wounded mature fruit at stem end
Widespread
Fusarium solani
