NINETEENTH ANNUAL MEETING. 21 



* Some Insect Pests of the Apple and How 

 to Control Them. 



By Prof. E. D. Sanderson, Durham, N. H. 



Ladies and Gentlemen: In what I shall say to you 

 this morning I think I can make my talk plainer by the 

 use of slides thrown on the screen which has been ar- 

 ranged upon the stage. I shall perhaps be somewhat de- 

 sultory, and talk to you in a conversational way, but on 

 the whole I think I shall be able to bring out more clearly 

 what I want to present before you if I do it in this way. 

 I hope that you will excuse me on that ground. 



Xow if we may have the slides. This slide represents 

 one of the worst pests to the apple grower that we have 

 had to deal with, and is the San Jose Scale. You have in 

 your state a State Entomologist, who is w r ell versed on 

 that, and full able to advise you what to do for that. We 

 have very little of it in Xew Hampshire, and I have had 

 very little to do with it, but it should be recognized as a 

 pest which we must fight. It is one of the most destruc- 

 tive that we have. 



Xow we have on the screen two leaves affected by 

 the leaf blister mite. I call it to your attention because 

 we have had considerable trouble with it. I think prob- 

 ably that you may have had it in this state. Its activities 

 seem to be quite widespread. It is the same thing that 

 we have on the pear. You will notice the way it works 

 with these pointed blisters on the leaves causing the leaf 

 to drop off, and if the pest is present in very large num- 

 bers it, of course, tends to defoliate the tree. On the apple 

 they are more brownish than on the pear. Why tins 

 pest should attack the apple is somewhat of a mystery. 



* This excellent address was made doubly interesting by the use 

 of numerous lantern slides which we regret cannot be reproduced 

 here. 



