24 



ditions it is perhaps advisable to scrape the bark the first 

 year, but any repetition the second year would be useless as 

 the lime sulphur spray seems to have a tendency to keep the 

 bark clean. 



Spraying. 



It is in tiie old neglected orchards of the country, which 

 have been left to theraselves, that all manner of fungous 

 diseases and insect pests run riot, not only ruining the 

 trees themselves, but also endangering the health and possibly 

 the very life of neighboring orchards. And so, in the work of 

 renovating, a stiff fight must be put up against all such con- 

 ditions, which is not only one of preventing as vvould be the 

 case in a v/ell cared for orchard, but also one of cure, involving 

 in many cases very radical methods of proceedure. 



Those fungous diseases and insect pests which are more 

 like-ly to be in evidence in neglected orchards are here set forth, 

 together with the most efficient methods of control as determined 

 by experiment and successful practice. 

 ^''ew York Apple Tree Canker. 



The cause of this disease was worked out in 1898 by V'endell 

 Paddock of the Geneva Exp. Station and found to be due to a 

 fungous called Aphaeropsis Pk. 



It is widely destributed in orchards in Neiv York State especially 

 in old ones vhich had become infected before preventive measures 

 had been worlced out. The cankers foru enlarged and darkened areas 

 on the larger limbs of the infected tree. The bark is roughened 

 and in the center of the canker it may be missing. It is very 

 adhesive to the surface of the decaying wood, and itjis this feature 

 which distinguishes it from sun scald where the bark peels off 



