60 



FUNGOUS DISEASES AND SPRAYING 



opening; again just after the petals have fallen ; a third time 

 two '^weeks later. At the second spraying four ounces of 

 paris green may be added to a barrel of the mixture for the 

 codling moth. 



Some varieties of apple are more susceptible to this disease 

 than others ; the Faraeuse and Mackintosh Red are probably' 

 the most so, but the majority of varieties are likely to suffer 

 more or less when the disease is especially prevalent as it was 

 in^l902. A cold, damp season seems to be favorable to the 

 development of the scab fungus. The scab is one of the 

 diseases which is most effectually and profitably treated by 

 spraying, 

 obtained : 



The following is a summary of the results we have 



On Fameuse apples. 



Free from scab 

 Slightly scabb}' 

 Badly scabby 



On Baldwins. 



Free from scab 

 More or less scabby 



Free from scab 

 More or less scabby 



Free from scab 

 Traces of scab 

 Badly scabby 



The last fisiures show the result obtained in 1902. The scab 

 was much more prevalent than it had been for at least the last 

 ten or twelve years ; this probably owing to the peculiar wea- 

 ther conditions. Almost all of the standard varieties suffered 

 more or less. 



Sooty Spot. Rounded dark colored or black spots on the 

 fruit; at first sight resembling scab, but on closer examination 

 seen to be more of the nature of a stain than a thick scab ; lies 

 wholly on the surface of the skin ; appears usually after mid- 

 summer ; gives the fruit a dirty, unsightly appearance. 



Treatment. Trees sprayed for scab will be protected from 



