Insects Injurious to the Fruit of the Apple 



1909 



the fact that no tissue is removed, the juice merely being sucked out, 

 causing a smooth depression in the fruit (Fig. 115). The feeding and 

 egg-laying p u n c- 

 tures of the cur- 

 culio cause char- 

 acteristic scars, as 

 shown in Figure 

 116. Apliis injury 

 is characterized by 

 a puckering about 

 the blow end of the 

 fruit, which does 

 not appear in typi- 

 cal redbug injury. 

 Means of control. 

 — If onlv the true 

 redbug of the apple 

 is present in the 

 orchard, it can be 

 effectually con- 

 trolled by a thor- 

 ough application of 

 " black leaf in " ^^^' ^^^' — ^y^ph of apple redbug feeding on a young apple 



tobacco extract. It should be mixed in the proportion of i pint to 100 



gallons of water, and 4 

 or 5 pounds of soap 

 should be added to the 

 mixtiire in order to make 

 it stick and spread bet- 

 ter. This spray should 

 be applied about the 

 time the blossoms show 

 pink, in order to kill the 

 nymphs while they are 

 still yoimg. If, however^ 

 as is usually the case, 

 the false redbug is also 

 present, the application 

 should be repeated just 

 after the blossoms fall 



f> 





Fig. 114. — Small apples cut open to show discolored 

 areas around the punctures made by redbugs 



in order to kill the young of this species. 



The two applications coincide with the first scab spray and the calyx 



