509 



Apple Scab ( Fusicladium dendriticum, Eckl.). 



BROWN ROT OF FRUIT (Manilla fructigena, Pers.). Attacks 

 apples, plums, cherries, peaches, almonds, and other kinds of 

 orcha.rd fruit. It is caused by a fungus which produces its spores 

 in chains, and hence called Monilia fructigena. 



Although more frequently observed on the fruit, it 'occurs also 

 on the young shoots, leaves, and even the flowers. 



On the leaves in the spring, it shows as thin, velvety, olive- 

 brown patches, consisting of barrel-shaped spores, originating from 

 mycelium present in the tissues of the leaf. 



At maturity the spores are carried by rain, wind, insects, birds, 

 and on the surface of healthy fruit. On these the disease first 



