304 Diseases of Truck Crops 



The trouble attacks the young as well as the mature 

 fruit. The winter or ascospore stage of the causative 

 fungus has not as yet been found. It is very prob- 

 able that the fungus is carried over as viable myce- 

 lium on the infected fruit left over in the field. Both 

 forms of anthracnose may be controlled by spraying 

 with Bordeaux mixture. 



Fruit Spot 



Caused by Macrosporium sp. 



This disease, which is as important as anthracnose, 

 attacks the fruit at the blossom end. Attacked 

 peppers are half rotted, black, and moldy. Little 

 is known about the causative fungus. It is probable 

 that the disease has the same origin as the blossom 

 end rot of tomatoes, and that the Macrosporium 

 fungus is only secondary. Spraying with Bordeaux 

 is recommended. 



Leaf Spot 



Caused by Cercospora capsisi H. and W. 



This disease is prevalent on peppers in Texas. The 

 same trouble may be found also in the more southern 

 States. It is characterized by roundish raised spots 

 on the upper surface, at first brown, later becoming 

 gray brown. They are limited by a dark zone, be- 

 yond which the leaf tissue is pale and chlorotic. 

 Where the spots are abundant the leaves turn yellow, 

 wilt, and fall off prematurely. 



