Dec, 1909.] 



SOME APPLE DISEASES. 



133 



The most serious injuries have been obtained from the early 

 sprayings. This may be largely due to the fact that showers are 

 common at that time of year. It is a well-known fact that when 

 an application of Bordeaux is followed by rain within the next 

 few days it is likely to produce injury. Records from a large 

 number of cases of Bordeaux injury in New Hampshire would 



1 



Fig. 29.— Baldwin apples russeted with 

 Bordeaux mixture in 1906. 



indicate that damage seldom, if 

 ever, occurs in properly sprayed 

 orchards except under the above 

 mentioned conditions. 



The injury done by Bordeaux 

 has not been great enough to 

 offset the good accomplished, 

 and various commercial growers 

 have annually obtained large 



profits from its use, yet the condition has been serious enough to 

 make strong demands for a solution of the difficulties. The mat- 

 ter has been taken up at various experiment stations, including 

 those of New York,^ Illinois- and New Hampshire, but a complete 

 solution of the problem has not been found. 



Much trouble may arise from the use of improper mixtures 

 and from unsatisfactory methods of application. Only good 



» Hedrick, N. P. Bordeaux Injury. N. Y. Agr. Exp. Sta. Bull. 287. 1907. 

 •Crandall, C. S. Bordeaux Mixture. 111. Agr. Exp. Sta. Bull. 135. 1909. 



