January 15, l$2k. 



Forest Entomology Brief 53- 



TK£ CARS OF ■VOinTDS IN THE T^ASmM OF 

 SZAIE T"REF.S FOR BO FEES. 



The removal and destruction of insect infested and decaying 

 wood is essential to the continued strength of tr2es attached "by 

 "borers. This work should "be thoroughly done, cutting out all wood 

 showing borer galleries or decay. The wound, or wounds should then 

 he cleaned and thickly coated with a water-proof preservative, 

 such as a mixture of equal parts ("by weight) of asphaltum and 

 creosote , one-fourth creosote and three-fourths coal tar, or a 

 good white lead paint. These materials must not ' be applied so as 

 to come in contact with the freshly cut edges of the living bark, 

 where a shellac should be used. 



Following the above treatment, the trees should "be invigorated 

 as much as possible "by the application of fertiliser and plentifully 

 supplied with water. This stimulation is best given in the spring 

 and ought not to "be used when frees ing weather approaches. 



At intervals the treated wounds must he examined to determine 

 their condition, and when necessary fresh coatings of preserva- 

 tive should "be applied. 



WILLIAM MIDDLETCN, 



Specialist in Shade-Tree Inse cts. 



Approved: 



~F. C. CRAIGHEAD, 



; Entomologist in C harge of Forest Insect I n ye s t i ga t i n s . 



