GREEN JUNE BEETLE 125 



Miscible oils are commercial sprays known as "Scalecide" and 

 "Kil-O-Scale." Other dormant sprays for scale insects would 

 probably be equally effective. 



Tree Crickets sometimes inflict serious injury, directly and 

 indirectly, upon peach trees, cherry trees, and many others. 

 Figure 148 illustrates some of these. (See also page 140.) 



ATTACKING THE LEAVES AND FRUIT OF PEACH 



The Black Peach Aphis. This is blackish or brownish larva of 

 Aphis per sicce-niger Smith. It is found on leaves, and in the winter 

 and summer wingless forms occur on the roots. Some of these 

 later migrate to leaves when they appear. Their life history is, 

 in a general way, similar to that of other aphids or plant lice, and, 

 like other forms, they multiply with amazing rapidity. The yel- 

 lowing of peach leaves is frequently due to the presence of the 

 underground form, which, though unseen, is sucking the vitality 

 from the tree. 



Measures of Control. Frequent spraying with tobacco ex- 

 tract is effective against the leaf form if applied with force 

 to the under side of the leaves. Use two tablespoonfuls of nico- 

 tine sulfate in one gallon of water with a little soap. For the 

 root form remove some of the earth from about the roots and 

 apply a liberal quantity of tobacco dust or tobacco stems, covering 

 the same with earth. 



Trees received from an infested nursery may bring this pest 

 into an orchard which would otherwise be free. If lice are observed 

 upon the roots of such trees when purchased, dip the roots in a 

 strong tobacco solution. 



The Tarnished Plant Bug or "Peach Sting." This insect, 

 discussed on page 84, frequently attacks young trees twenty to 

 twenty-four inches high, causing the terminal bud to wilt. 

 This may occur on both leader and lateral. Since a portion of the 

 life of this insect is passed on various weeds and cultivated plants, 

 clean cultivation in and about an orchard is recommended. 



The Green June Beetle. These greenish beetles (Allorhina 

 nitida Linn.) have yellowish markings on the side. They frequently 

 feed upon the fruit of the peach. The clumsy, whitish grubs from 

 which they develop in two years are found in the ground, particu- 

 larly where it has been abundantly treated with manure or other 

 dressing (Fig. 149). 



Repeated hand-picking and destruction of the beetles appears 



