New York Agricultural Experiment Station. 27 



apples in storage. The trouble was investigated and determined to 

 be caused by a fungus, a species of Hypochnus, which had never be- 

 fore been known to cause a decay of fruit. 



It was found that the fungus always entered a fruit through 

 breaks in the skin made by scab, and investigations showed that it 

 was impossible for it to grow through the unbroken skin. From 

 the fact that only fruit affected with the scab was attacked by the 

 rot the importance of preventing the scab by spraying is again em- 

 phasized. 



In February, 1903, it was observed that a core rot of Baldwin 

 apples was quite prevalent. Outwardly a fruit would appear per- 

 fectly sound, while an area about the core was decayed. An investi- 

 gation did not reveal the trouble to be traceable to fungi or bacteria. 

 A cause could not be found in the use or absence of fertilizers, soil 

 conditions or imperfect ripening of the fruit. That it may have been 

 due to overbearing or the excessively wet season, or to a combina- 

 tion of both of these factors is a possibility. 



Commercial cold storage (30° F.) entirely checked the develop- 

 ment of the decay. 



Combating the black rot of cabbage. — This work has been done in 

 cooperation with the Department of Bacteriology. During four con- 

 secutive seasons, 1899-1902, field experiments were made on the 

 removal of diseased leaves as a means of preventing cabbage black 

 rot, a method which has been recommended by certain other investi- 

 gators. Each season the area of the experiment field was one acre, 

 one-half receiving treatment and the other half being left untreated 

 for a check. On the treated half acre all diseased leaves were re- 

 moved from the plants and carried out of the field once a week. 



In the first three seasons there was so little black rot, even on the 

 check, that no conclusions could be drawn from the experiment ; but 

 in 1902 there was a moderate attack of the disease and the results 

 show conclusively that this method of treatment is not only a failure 



