76 INSECTS AFFECTING THE CHERRY. 



INJURING THE FRUIT. 



The Plum Curculio. 



Conotrach elus nen wph a r. 

 This insect, which has already been discussed un- 

 der the plum (p. 60), 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 meas- 

 ures suggested in connection with the plum are 

 -equally applicable to this fruit. 



Other Cherry Insects. 



There are a large number of caterpillars that feed 

 upon the leaves of cherries, but the)* rarely do no- 

 ticeable injury, and spraying with the arsenites will 

 .keep nearly if not quite all of them in check. 



Summary of Treatment. — Spray the trees as 

 !soon as blossoms have fallen, with Paris green — 3 

 •ounces to 50 gallons water. Repeat the operation 

 once or twice at intervals of ten days. If the Leaf 

 Slug appears about the time the fruit is beginning to 

 ripen, spray with pyrethrum, 8 ounces to 50 gallons. 

 If aphides or plant-lice appear, spray with kerosene 

 emulsion. The second brood of Slugs, developing 

 after the fruit is harvested, may be destroyed by 

 spraying with Paris green or London purple. 



