COTTON 
167 
In general the diseases affecting cotton may be 
divided into three classes : 
1. Diseases affecting bolls: 
Anthracnose 
Shedding bolls. 
2. Diseases affecting roots : 
Root Gall 
Root Rot. 
3. Diseases affecting leaves or stems or both : 
Anthracnose 
Leaf Blight 
Mildew 
Damping-off 
Wilt 
Mosaic 
Red Rust 
Angular Leaf Spot. 
WHAT THESE DISEASES DO 
In order to clearly understand these diseases 
each one will be discussed separately. 
Anthracnose: — The fungus causing this dis- 
ease is a well known parasite of the cotton plant 
in all its stages of growth. It attacks the stems 
of young seedlings near the ground and produces 
the disease similar to the well known "sore-shin" 
or damping-off of the same plant. The cotyle- 
dons or young seed leaves also are attacked 
frequently. The same fungus also produces spots 
on the leaves and on the stems, but it is perhaps 
best known as the cause of the anthracnose of the 
boll. 
When it attacks the bark of the stem, reddish- 
