CURRANT LEAF SPOT 287 



a serious extent the leaves fall early, and the fruit does 

 not ripen properly, if at all. Further, such trees are unable 

 to accumulate the necessary amount of reserve material, 

 and consequently do not produce a good crop of fruit the 

 following season. 



The disease usually appears when the leaves are just 

 full-grown, appearing as minute blackish spots, chiefly on 

 the upper surface. These spots are caused by dense tufts 

 of mycelium in the tissues of the leaf, which increase in size 

 and eventually rupture the epidermis, the minute spores 

 escaping in the form of a tendril, being stuck together by 

 mucus. When on the surface, these strings of spores are 

 washed apart by dew or rain, and find their way to other 

 leaves, where they germinate, and thus spread the disease. 



Preventive Means. — Very dilute Bordeaux mixture, 

 or potassium sulphide solution, if applied sufficiently early, 

 checks the disease. 



Dudley, Corfiell Expt. Statio?i, U.S., No. 15. 



BANANA ANTHRACNOSE 



{Gloeospormm musarum, Cke. and Massee.) 



Forming blackish spots which gradually spread over the 

 entire surface of the fruit, causing rotting to take place. 

 The black spots are suffused with a roseate tint when the 

 spores are extruded. 



First described as occurring on ripe bananas at Bris- 

 bane ; afterwards met with in the United States on the 

 same host. 



Diseased fruit should be removed as soon as the small 



