THE CHERRY 



INSECT ENEMIES OF THE FRUIT 



The PLUM CURCULIO, which has already been dis- 

 cussed under The Plum (page 69), is also exceedingly 

 injurious to cherries. The latter, however, usually do 

 not fall off when infested by the curculio larvae, but 

 remain on the tree until the fruit ripens. The remedial 

 measures suggested in connection with the plum are 

 equally applicable to this fruit. 



Some varieties of cherries, especially the early 

 ones, are very susceptible to injury by arsenites. 

 Arsenate of lead seems to be the safest poison to use 

 on them. Do not spray early varieties more than 

 twice, or late ones more than three times. 



INSECT ENEMIES OF THE FOLIAGE 



The twigs and under surface of the leaves of 

 cherry trees are frequently thickly infested during May 

 and June by small, shining black plant-lice, that suck 

 out the sap and deform the leaves. This insect is the 

 CHERRY APHIS. It winters over on the twigs in the 

 egg state. Early in spring the eggs hatch into young 

 aphides that insert their tiny sap-sucking beaks into the 

 unfolding leaves. In a week or ten days they become 

 full-grown, and give birth to young lice, which soon 

 develop and repeat the process. In this way they 

 increase with marvelous rapidity. Late in June or 

 early in July they leave the cherry, migrating to some 

 other plant. Here they develop through the summer, 

 and in autumn a winged brood again appears and 



