NINETEENTH ANNUAL MEETING. 167 



ommendations. It seems evident, however^ that a lime-sul- 

 phur preparation in one form or another" is destined to largely 

 take the place of Bordeaux mixture in spraying varieties of 

 apples subject to serious injury from applications cf the 



latter. 



A lime-sulphur solution containing, when diluted, about 

 4 lbs. of sulphur to 50 gals, of water.. appears at present to 

 be the most promising preparation. This may be obtained by 

 using the commercial solution at the rate of ljA gals, to 50 

 gals, of water, or by preparing the lime-sulphur mixture at 

 home and diluting it so that each 50 gals, will contain 4 lbs. 

 of sulphur. The mixture at this strength injured apple 

 foliage in Virginia very little, and if these results could be 

 taken as a reliable guide, there need be no hesitancy in using 

 it ; but under different conditions the results might be differ- 

 ent and the matter must still be considered as experimental. 

 However, in view of the results of our experiments extending 

 over three years, and those obtained by other workers, I 

 would not hesitate to use the mixture for apple scab and leaf 

 spot on varieties subject to Bordeaux injury. 



Our experiments of 1908 and 1909, as well as. the pub- 

 lished records of other investigators, show that the lime-sul- 

 phur solution is apparently as effective as Bordeaux in the 

 control of apple scab. Under more severe conditions than 

 those which existed in the experiment orchards, the treatment 

 might fail, but at present it is very promising. It will control 

 leaf-spot and other minor troubles, as well as apple scab, but 

 so far it has not proved to be a satisfactory remedy ior apple 

 blotch (Phyllosticta) and bitter rot. However, the experi- 

 ments on those two diseases have not been carried far enough 

 to determine what may be expected of it in this connection. 

 In sections where spraying for bitter rot is required the lime- 

 sulphur treatment for scab and leaf-spot could be followed 

 by applications of Bordeaux for bitter rot. 



The self-boiled lime-sulphur is entirely harmless to apple 

 foliage and apparently has' a stimulating effect, hut it is not 



