Symptoms 



Cherby. 



Root.— Large globular swellings on root = 

 Crown gaU ; see Apple. 



Stem. — Gummy exudations through wounds 

 in stem or bark of twigs. Remove and burn 

 diseased branches, painting over all large 

 woimds. 



Foliage. — Small round brown spots which 

 fall out, leaving a hole with a brown margin. 

 Shot-hole due to Gercospora circumscissa. Spray 

 with Bordeaux mixture (including soil surface). 

 Leaves , wither, but remain hanging dead 

 on tree through winter. Collect and burn dead 

 foliage. Spray with Bordeaux mixture (7). 

 Leaves silvery or ashen. Silver leaf, see Plum. 

 Flower. — ^Withering and browning of flowers 

 prematurely, and rotting of young fruits due to 

 Monilia fructigena. See treatment for Apple 

 brown-rot. 

 Chionodoxa. 



Flower. — Brownish-violet masses of spores 

 in place of pollen. Smut, due to Ustilago 

 Vaillantii. Plants are attacked in the seedling 

 stage and never recover. Destroy them (4). 

 The same fungus attacks Scilla. 

 Chrysanthemxtm. 



Foliage. — Gre3dsh-white growth on leaves 

 and flower buds, the yoimger leaves being 

 deformed. Mildew due to Oidium chrysan- 

 •75 



