ENEMIES OF PLANTS. 



339 



carbonate solution should then be substituted 

 for the Bordeaux mixture. Care must be taken 

 to burn the mummified fruits (Fig. 124). 



3. The Bitter Rot of apples (Glceosporium 

 fructigenuni]. This is sometimes called the 



Year-book, 1899. 



FIG. 125. GRAPES FROM VINEYARD AFFECTED WITH BLACK ROT. 

 Sprayed and unsprayed. 



ripe rot of apples, as it seldom affects the fruit 

 until half or nearly grown, and often effects it 

 even after it is stored."" It first appears as small 

 brown spots which enlarge, and sometimes two 

 or more unite, so that soon the whole fruit is 

 rotted. The fruits may drop off, but often re- 



* Unless in cold storage. 



