Problems
Strategies
Values
Legacy Data
About
Contact
uia.org
The Encyclopedia
of World Problems
& Human Potential
Search Problems
You are here
Home
English
Leaf spots
Nature
Leaf spots are delimited necrotic lesions. When numerous spots grow together the disease becomes a blight, a blotch, or scorch.
Broader
Symptoms of plant disease
Narrower
Tar spot of maple
Aggravated by
Pathogenic fungi
Environmental plant diseases
Alternaria diseases in plants
Particulate atmospheric pollution
Type
(E) Emanations of other problems