agriculture
anthracnose
bacteria
black rot
blight
canker
cercospora
chlorosis
crops
damping
dead
dieback
disease
eye
fire
forest
frog
fruit
gall
green
gummosis
infections
leaf
malformations
mildew
nature
off
othalanga
pathology
phyllody
pongpong
powdery
rosette
rot
rust
scabs
scorch
seed
smut
spot
streak
stripe
suicide tree
symptoms
tips
tree
virescence
virus
wilt
yellowing