April, 1912.] 



SOME APPLE DISEASES — TREATMEXT. 



27 



may almost entirely outgrow its injuries by picking time, but 

 when the injury is very great the fruit may drop before maturity, 

 and in any case is of little commercial value. 



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 



Fig. 30. — Baldwin apples nis.seted with Bor- 

 deaux 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 



