216 THE DISEASES OF FRUITS. 



tub or other wooden vessel filled with water. Hot water will 

 greatly hasten the solution if it is desired. In preparing the 

 full formula of sixty gallons, slowly pour a ten-gallon solution 

 of the copper sulphate into twenty gallons of the lime wash, 

 stirring thoroughly, after which the mixture is to be diluted 

 to sixty gallons. 



For the application a force pump of some durable kind at- 

 tached to a tank and mounted upon wheels is necessary. 



FlG. 281. An Apple, showing the decayed spots of the Ripe Rot. (From 

 Alwood.) 



There are several reliable manufacturing firms paying special 

 attention to spraying machinery, and bulletins upon the sub- 

 ject of fungicides and their application are published by the 

 Experiment Stations, while information in abundance and 

 proper form may be obtained of the general government 

 through the Department of Agriculture at Washington. 



The Ripe Rot ( Glceosporium fructigenum Berk.), as the name 

 suggests, is confined more particularly to the maturing fruit 

 or after it is stored. The first suggestion of the disease is a 

 circular spot upon the surface of the apple, slightly sunken 

 and pale-brown colored. The diseased area increases rapidly, 

 and soon the pimples containing the spores appear, often in 

 concentric circles. When several rot spots appear at nearly 

 the same time, they will shortly coalesce, and the fruit decays 

 rapidly (see Fig. 281). 



