60 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 10 



Vice-President G. A. Dean: The paper is now open for discus- 

 sion. 



Mr. H. T. Fernald : This paper has been interesting to me because 

 I think it was at one of these meetings about ten years ago that the 

 insect was first reported by Doctor Smith from New Jersey. Then 

 it was only known in certain portions of that state. I would like to 

 ask the speaker whether he can give us any indication of its present 

 distribution in New Jersey which would indicate how far it has spread. 



Mr. Hugh Glasgow: No, I cannot. 



Vice-President G. A. Dean: The next paper will be presented 

 by Dr. E. P. Felt. 



"SIDE INJURY" AND CODLING MOTH CONTROL 



By E. P. Felt, Albamj, N. Y. 



The term "side injury" or "shallow" is limited in this paper to the 

 characteristic blemish produced by late-hatching codling moth larvae 

 entering the smooth side of the apple, running just under the skin a 

 circular gallery with a radius of about one-sixteenth of an inch, and 

 then in a few days deserting this initial point of injury and usually 

 migrating to the blossom end. . This blemish is frequently marked by 

 a red or reddish brown discoloration and was the cause of serious loss 

 in western New York in 1915. Then it was not difficult to find 

 sprayed orchards with 20 per cent or more of the fruit affected in 

 this manner. There was not so much damage of this character the 

 past summer. 



The experimental work of 1916 was a continuation of that of the 

 preceding year and in tabulating results, pains were taken to dis- 

 tinguish between this "side injury" or "shallow" and other codling 

 moth work. 



We have brought together in the above tabulation, a comparison 

 of conditions found in two Orleans County orchards — one Greening 

 and the other King apples. It will be noticed, as in the Kendall 

 orchard, that the yield for the plots of six trees sprayed once, twice 

 and three times, varied in an almost uniform descending series from 

 nearly 7,000 to approximately 1,500 apples, while in the Albion or- 

 chard, the range was from nearly 3,500 to approximately 6,400, the 

 plot sprayed twice in the latter orchard being the one producing the 

 smallest crop. We desire :n this connection to call attention to the 

 fact that the variation in the percentage of wormy apples appears to 

 be affected more by the size of the crop than the number of sprayings 

 and, moreover, that there is a fairly constant ratio between the total 



