APPLE SPRAYING EXPERIMENTS IN I914. iS/ 



apples were classed as russeted unless this was plainly evident, — 

 that is, apples which showed minor scars and imperfections of 

 the skin, not plainly suggestive of spray injury, were classed as 

 smooth. 



The senior writer has been interested in watching the devel- 

 opment of these various injuries and imperfections which 

 appear on the skin of growing apples and has followed indi- 

 vidual cases through a number of different seasons. He is 

 convinced that many of these minor imperfections are due to 

 slight mechanical injuries or to insect attacks, often when the 

 fruit is quite young and small, and particularly from the egg- 

 laying punctures of the curculio. In the fall imperfections on 

 the surfaces of apples resulting from injuries produced by this 

 insect earlier in the season have been found in the orchard in 

 question, varying from the typical crescent-like scars through 

 various steps and graduations up to large blotches of russeting 

 in which all evidence of the original puncture had disappeared 

 and where the outline had become so modified as to practically 

 obliterate the distinct crescent form of the original injury. 



