MAINE AGRICULTURAL EXPKRIMKNT STATION. 1910. 393 



control of Baldwin spot by spraying. The cause of the trouble 

 is not well under.stoocl and until this is known little can be done 

 •toward finding methods of prevention. 



In many of the earlier descriptions, spots on apples caused by 

 the fungus were confused with spots which are not caused by a 

 fungus and a composite description was made. In New Hamp- 

 shire Experiment Station Report 20, p. 342. Brooks says: "It 

 would be difificult to decide from the earlier descriptions given in 

 the bulletins of the New Hampshire Station whether the Fruit 

 Spot or the Fruit Pit (the original Baldwin spot) was under 

 special observation. The descriptions are better if taken as 

 applying to the two diseases than if considered as applying to 

 either to the exclusion of the other. The spraying experiments 

 were undoubtedly made upon the Fruit Spot. So far as the 

 writer has been able to learn, a distinction between these two 

 diseases has never been made." 



The fact that the two diseases w^ere sometimes confused and 

 considered as one before the time of Brooks' publication togeth- 

 er with the name which he has applied to the fungous disease 

 has led a number of people to conclude, without careful study 

 of the distinction which he has made, that all of the spotting of 

 Baldwin apples is due to the fungus Cylindrosporium pomi. 



The observations of the writers have convinced them that the 

 Baldwin spot is of common occurrence in [Maine, and that apples 

 affected by this disease are more seriously injured than are Bald- 

 win apples aft'ected by the fungous disease. 



Hail injury. During the past 2 or 3 years different parts of 

 the State have experienced hail storms of sufficient severity as to 

 badly injure the young fruit on the apple trees. There is noth- 

 ing which can be done to prevent this injury, but frequently it 

 is not noticed at the time and is later attributed to fungi, insects 

 or other causes. The fruits may be badly deformed and scarred 

 resembling somewhat curculio injury but the characteristic 

 crescent shaped scars of the latter are not present. Quite fre- 

 quently hail injury is followed by fungous decays of the fruit 

 resulting from infections of the wounds. 



Stag horn. Very frequently apple trees are seen with the 

 topmost branches dead and remaining as dry sticks like antlers 

 projecting above the foliage. This condition may be due to va- 

 rious unfavorable conditions, but in Maine it is chiefly encounter- 



