Pomaceous Fruits 



71 



by this blight, the foUage spotting and falling prematurely 

 so that the vitality and vigor of the tree is much reduced. 

 Upon the fruit it causes black blotches, first seen as small 

 brown spots, which soon increase in size and turn darker 



Fig. 35. — Black-spot of the quince, natural size. After Bailey. 



in color. While this spot does not materially injure the 

 fruit for use, it does retard its full development, and, be- 

 cause of impaired beauty, decreases its selling price. It also, 

 as in the case of apple scab, gives entrance to the pink-rot 

 fungus. 



The means of prevention consists in application of lime- 



