The Peach-Tree Borer. 



227 



wash, and the other similar washes mentioned above, will afford 

 nearly as much protection against the peach-tree borer, under north- 

 ern climatic conditions, as will some other applications which it is 

 necessary to make but once a year. 



Lime, salt and sulphur vmsh. — A two years' test of this famous 

 California insecticide gave us the following results : 



1894-1895. 



Even two applications of this wash had no effect upon the num- 

 bers of the borers, hence it is valueless. 



Resin wash. — This is another insecticide which has been exten- 

 sively used on tlie Pacific coast, and good results have been reported 

 from Oregon when it was used as a wash for the native peach-tree 

 borer. We used this resin wash, made according to the California 

 formula, for two vears. Althouy'h we used it of double strentjth 

 and made two applications the second year, the results obtained, 

 as given in the following table, show that such a wash has little to 

 recommend it to peach-growers who are fighting the borers : 



1894-1895. 



