APPLE SCAB 



303 



The disease is tided over the winter by means of the 

 mycelium present in fallen fruit. Goethe, a German 

 observer, states that an ascigerous form of fruit is produced 



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Fig. 80. — Fusicladlum dcndrlticum. i, appearance 

 of fungus on the upper surface of an apple leaf; 2, the 

 fungus on an apple ; 3, conidia, a, borne on the tips of 

 conidiophores, b, x 300. 



on the diseased patches, which matures the following 

 spring. 



Preventive Means. — The following method for combat- 

 ing the disease is recommended by Professor Galloway : — 

 ' Spray with Bordeaux mixture : first, just as the flower-buds 



