SPRAYING 111 



diluted at the rate of one part to five parts of 

 water will kill most of these eggs as well as all 

 scale insects with which it comes in contact. 

 Consequently many growers are now dispens- 

 ing with the use of the expensive and extremely 

 disagreeable tobacco solutions that were for- 

 merly used. I have no objection to tobacco as 

 such, having been the means of consuming a 

 great deal of it by fire during the past several 

 years, but the concentrated extract as presented 

 in nicotine sulphate is just a little too powerful 

 to be attractive. 



The chewing insects in an orchard are legion, 

 but fortunately only a few of them are of any 

 importance. Some that might very easily be 

 important are "taken care of" incidentally by 

 the regular spraying of the orchard. Prob- 

 ably the one chewing insect that orchard men 

 know best is the codling moth. The insect it- 

 self is not particularly well known as many ex- 

 perienced orchardists have never seen a speci- 

 men of the adult (full grown, mature) moth. 

 The "worm in the apple," however, is known 

 to every one and in most cases this worm will 

 be identified as the larva of the codling moth — 

 whether it is or not. 



It was formerly thought that the moth laid 

 its eggs in the calyx end of young apples but 

 this has been shown to be a mistake although 

 the young worms of the first brood frequently 



