288 



Bulletin 145. 



III. PEAR SCAB.* 



I. General Account. 



During the past two years a number of inquiries have been received 

 concerning pear scab, and among the smaller orchardists or others with 

 a small number of trees, equally as many inquiries have related to the 



well-known pear blight. 

 Consequently, it has 

 seemed well to incor- 

 porate in this bulletin 

 such brief accounts of 

 these two diseases as 

 will give the information 

 desired. 



The injurious effects 

 of pear scab are well 

 understood by many 

 orchardists ; and by 

 some the disease is 

 combated faithfully and 

 successfully, but to 

 others it is an inevi- 

 table attendant of pear 

 culture. During the 

 past summer I was sur- 

 prised to find how often 

 pear scab is confused 

 with certain insect 

 punctures and other 

 minor injuries. I pre- 

 sume, however, that no 

 one who ever grew so 

 susceptible a variety of pear as the Flemish Beauty could long remain 

 ignorant of the scab. The pear shown in figure 168 is from a photo- 

 graph of a Flemish Beauty. Although much is lost when colors are 



168. — Sianmcr Doyenne badly injured by pear-scab. 



* Fiisicladiuui pirinum (IJb.) Fckl. 



