8 



fully demonstrated the practical merit of *this wash and its superiority to 

 others in point of safety to trees and in cheapness. The wash is further- 

 more a valuable fungicide, and is notably useful against the peach leaf 

 curl, sprayed trees being- practically immune from this disease, so that 

 the cost of treatment is often more than made good by the fungicidal 

 benefit alone. Its disadvantages are the difficulty of preparation and the 

 heavy wear which it entails upon the apparatus — objections, however, 

 which do not offset its no.able advantages, particularly for orchard work 

 or where the number of trees to be treated is sufficient to warrant the 

 trouble of its preparation. It is, in fact, the standard spray now used 

 in commercial orchards for the San Jose Scale." 



The following summary is taken from Bulletin 21, October, 1906, of 

 the Georgia State Board of Entomology, by R. I. Smith, State Ento- 

 mologist : 



Summary. 



Boiled lime-sulphur wash is recommended as a remedy for the San 

 Jose Scale. 



Salt in the wash does not appear to be necessary or desirable. 



Soluble oil sprays should be used cautiously. Do not depend entirely 

 on these preparations without first giving them thorough test on a small 

 number of trees. 



Badly infested orchards should be sprayed twice ; once in fall and 

 again the following spring. 



Orchards which cannot be sprayed twice should be given one thor- 

 ough spring spraying. 



Large orchards will have to be partly sprayed in fall or winter. In 

 such cases spray the least infested portion in fall or winter, and the worst 

 infested portions of the orchard in spring. Or better yet, spray the 

 worst infested portions both fall and spring. 



Convenient, serviceable boiling arrangement must be provided for 

 boiling lime-sulphur wash. 



Steam boiling outfits are most desirable when considerable quantities 

 of lime-sulphur wash must be made. 



Iron kettles may be used for boiling small quantities of lime-sulphur 

 wash. When such kettles are used set them in a brick arch. 



Spray pumps capable of giving sufficient power to throw a strong 

 spray should always be used. Whenever more than a few trees are to be 

 sprayed, it does not pay to attempt to use small, cheap spray pumps. 



Thoroughness in spraying is necessary in order to secure satisfac- 

 tory results. This rule applies no matter what mixture or solution is 

 employed for spraying the trees. 



The lime sulphur. 



