122 THE AMERICAN PEACH ORCHARD 



the lime-sulphur mixtures are the most effective 

 remedies. Extensive experiments have been made 

 in summer spraying, especially with the lime-sul- 

 phur sprays. While a few careful operators have 

 shown excellent results by these methods, it can- 

 not be said that summer spraying- has proved a gen- 

 eral success against San Jose scale. Present prac- 



BOILING LIME-SULPHUR 



tice puts the chief emphasis on the theory of a 

 thorough spring spraying, which is given about the 

 time the snow goes off the ground and before the 

 buds start into growth. In cases of very severe in- 

 festation, it is feasible to spray the orchard heavily 



