486 



PROTECTION AGAINST FUNGI. 



1). Sitbfecls of Attack, and Distribution. 



The fungus which occurs in Britain, is most destructive in 

 its attacks on the Caspian willow (Salix acutifolia, Willd.), but 

 also attacks S. daphnoides, viminalis, purpurea, etc. Yearling 

 shoots suffer most, and 2 to 4 years old shoots are less liable 

 to infection. 



c. Protective Rules. 



Cut off and burn all infected shoots as soon as they are 

 noticed. All infected dead leaves should be collected during 

 the autumn or spring and burned. 



Infected osier-beds may be sprinkled by means of an 

 ordinary white-washing brush with dilute carbolic acid, one 

 part to 500 of water. This should be repeated several times, 

 and costs about Is. an acre. Bordeaux mixture may be used. 



Cultivation of the Caspian willow may have to be abandoned 

 when the fungus is prevalent, which is much to be regretted as 

 this willow thrives on dry soils and has proved useful on railway 

 embankments, sand-hills, etc. 



Melampsora Salicis-Capreae, Pers., is common on S. Caprea, 

 L., S. aurita, L., and S. cinerea, L., and develops aecidia of 

 Caeoma Eronymi, Gmel., on the spindle-tree. 



Fig. 238. 



-Aspen leaf with sporocarps of Melampsora Tremulae, Tul. 

 After Hartig. 



