Follow-Up Work 



4:»; 



from late-deposited eggs of the first brood of the codling moth. 

 These minute pests enter the side of the apple, usually during the 

 latter part of June or the first half of July ; eat a shallow, circulai' 

 ffallerv with a radius of al)0ut one-sixteenth of an inch : and then 

 in large measure desert the place of inital injury and migrate to 

 the blossom end, where they frequently succumb to the poison 

 applied just after blossoming. This type of injury is comparable 

 to the early leaf-mining habits of the young caterpillars, and would 



Fig. 594. — Side Injury, Showing Small Circular Spots with Central 

 Hole, Produced by Young Caterpillars From Late-deposited Eggs 

 OF the First Brood 



be of little moment were it not for the permanent disfiguration of 

 the fruit. In many instances a thin slice one-sixteenth of an inch 

 thick or thereabouts will remove the blemish, a mark that dis- 

 qualifies the fruit for the fancy grade and one that can be 

 admitted into the better grades to only a limited extent. This 

 type of injury is much less common in the Hudson Valley. 



The various plots in these tests were sprayed once, twice, and 

 three times, respectively, in each instance unsprayed or check trees 



