A FRUIT-DISEASE SURVEY OF AVESTERN 

 NEW YORK IN 1900.* 



F. C. Stewart, F. M. Rolfs and F. H. Hall. 



SUMMARY. 



During the season of 1900 the writers made frequent visits to 

 the orchards, vineyards and small-fruit plantations throughout 

 Western New York for the purpose of learning what fruit dis- 

 eases exist there. The information thus gathered was supple- 

 mented by the replies to a circular letter of inquiry which was 

 sent to 200 fruit growers. 



The season of 1900 being an unusually dry one, fungous dis- 

 eases did not thrive. All kinds of fruit were unusually free from 

 disease. Consequently, there are no remarkable outbreaks of 

 disease to report. The chief feature of this report consists in. 

 descriptions of some new or little-known diseases and a few new 

 facts about the common diseases. Such items of interest are 

 the following: Mac'-oplioma on apple (p. 174) and pear (p. 198); 

 Cytospora canker of apple (p. 175); " hairy root " of apple (p. 177); 

 a disease of apricot (p. ISO); brown spot of apricot (p. 181) and 

 peach (p. 192); a fall rust of blackberry (p. 182); hail injury to 

 cherry (p. 18C) and plum (p. 202); leaf scorch of cherry (p. 188) 

 and pear (p. 197); frost injury to grape (p. 189); double peaches 

 (p. 195); "little peach" (p. 191); nursery-cellar disease of peach 

 (p. 194); Cytospora on peach (p. 196), plum (p. 201) and apricot 

 (p. 181); gumming of plum fruits (p. 203); powdery mildew of 

 quince (p. 205) ; cane knot of raspberry (p. 20G) ; powdery mildew 

 of raspberry (p. 208); and cane blight of raspberry (p. 208). 



♦Reprint of Bulletin No. 191. 



