284 



STONE FRUITS 



from one-half to three-fourths of the crop is ruined in a few 

 days. 



The disease first appears as small brown spots on the 

 fruit, which rapidly enlarge, involving the entire fruit in a 



FIG. 1 18. Peach leaf curl. (After Wallace and Whetzel, Cornell University.) 



few days. It has been proven that the plum curculio is very 

 instrumental in the spreading of this disease. The brown rot 

 can be controlled by spraying with self-boiled lime sulphur. 



