DRUPACEOUS FRUITS 



117 



$25,000. This disease is identical with that of the plum, 

 but since the spraying mixture adheres to the fruit, it cannot 

 be applied on to the plum without injury to the market 

 value of the product. Spraying as for plum leaf spot with 



Fig. 51. — Cherry tree from same orchard sprayed with self-boiled lime-sulphur to 

 control leaf spot. After Scott. 



such modifications as are needed to avoid spotting the fruit 

 is the only recourse. 



Recent experiments by Scott' showed that the self -boiled 

 lime-sulphur wash (10-10-50), the factory-boiled lime- 

 sulphur wash (1^0), and the Bordeaux mixture (2^-50) 

 were equally effective in controlling the cherry leaf spot. 



1 Scott, W. M., U.S. Dept. Agr. Bur. Plant Indus. Circ. 27, April 21, 

 1909. 



