The Peach-Tree Borer. 



229 



1895-1896. 



July 14, 1896. . 



20 



1896-1897. 

 June 22-28, 1897. . ' 11 (55$0 



12 



Slight 

 injury. 



Years. 



Untreated or check trees. 



1895-1896 

 1896-1897 . 



128 

 128 



Same dates 68 (53^ 176 



75(58^) 137 



The first year the paint was very effectual, keeping out nearly 

 I of the borers, and doing little or no injury to the trees. Tlie 

 second year it did not keep out ^ of the borers, a large percentage 

 of the treated trees were infested, and the trees were noticeably 

 injured ; possibly the application was made a little late in 1896. 

 Our conclusion is that white paint makes a lasting wash and it will 

 doubtless keep out ^ or more of the borers, but it may injure young 

 trees ; a young orchard is said to have been completely ruined in 

 Alabama by its use (Baker, 1898). It would probably not injure old 

 trees, but we doubt if it would usually be applied thoroughly enough 

 on such trees to penetrate all the cracks and crevices which it must do 

 to be a preventive. We doubt its effectiveness when applied on old 

 trees, and would not recommend it for general use on young trees. 



We made a light green paint by stirring ^ pound of Paris green 

 into 1 gallon of white paint, made as described above. We thus 

 had a poisoned wash. Our i-esults from a two years' experiehce 

 with this green paint is shown in the following table : 



1895-1896. 



When appUed. 



June 19, 1895 



Number 

 of trees 

 treated. 



14 



When examined. 



June 11, 1896. 



Number 

 of trees 

 infested. 



5 (36^; 



Lar-gest 

 Number I number 

 of borers of borers 

 found. in one 

 tree. 



7 



Effect of 

 applica- 

 tion on 

 tree. 



Much 

 injury. 



