PEACH-LEAF CURL 



277 



usually controls this disease. When the disease is very 

 bad, additional sprayings later in the season are necessary. 

 The cankered areas on the limbs should be cut out and 

 burned. 



Shot-hole Fungus. -- This fungous disease of cherries, 

 plums, peaches, currants, and gooseberries causes round, 

 brown spots on the foliage, which later drop out, leaving 

 the leaves full of holes. When the disease is severe, the 

 leaves turn yellow and fall, thus preventing a vigorous 

 growth of the tree and the 

 formation of strong fruit 

 buds for the succeeding year. 



The foliage should be 

 sprayed with dilute lime- 

 sulphur before blossoming, 

 after the blossoms fall, again 

 two weeks later, and some- 

 times an additional spraying 

 is necessary. For currants 

 and gooseberries, the third 

 spray should be omitted until 

 after the fruit is harvested. 



Peach-leaf Curl. This is 

 a common disease on the 

 foliage of the peach, causing the leaves to become curled, 

 puckered, puffed over, and reddish in color. If not con- 

 trolled, the foliage will drop. 



The spores of the disease are carried over winter on the 

 buds and on the twigs, hence it is necessary to spray with 

 a fungicide just before the bud scales open. If the trees 

 are sprayed with lime-sulphur in the spring for the San 

 Jose scale, no additional spraying is necessary. 



Fig. 149. Peach-leaf curl. 



