INSECT ENEMIES 133 



In the large peach sections of the central and the 

 southern states where the best peach growers are 

 adopting the practice of summer spraying with self- 

 boiled lime-sulphur, the poison is added to this solu- 

 tion and applied at the same time. Scott and Quaint- 

 ance recommend that this combined mixture be 

 made of a strength of eight pounds of lime and eight 

 pounds of sulphur to each 50 gallons of water and 

 the arsenate of lead added at the rate of two pounds 

 to each 50 gallons of the mixture. If the poison is 

 used without the lime-sulphur spray there should be 

 added a certain amount of lime, say two pounds of 

 lime to 50 gallons of water. 



The use of the combined poison and lime-sulphur 

 spray is referred to further in the chapter on Plant 

 Diseases, page 140. 



FRUIT BARK BEETLE 



The fruit bark beetle and the peach tree bark 

 beetle, two different, but very similar insects, do a 

 good deal of damage, especially in the central states. 

 They bore holes in the tree trunks, making the bark 

 look as though it had been struck by a charge of 

 bird shot. These insects seem to be much worse on 

 orchards which are otherwise in poor condition, and 

 they are generally regarded as hardly worth the 

 attention of the best fruit growers. In other words, 

 general good care and constant attention are de- 

 pended upon to prevent damage by these insects. 



In this connection it is important to remark that 

 general good care goes a long way toward keeping 

 in check all kinds of insect and fungus pests. 

 These cause their greatest damage on neglected 

 orchards. 



