INJURING THE FRUIT. 81 



its injuries on this crop than on the apple or plum, 

 because ordinarily it is impracticable to jar peach 

 trees, and their foliage is so easily injured by the 

 arsenites that spraying must be clone with great cau- 

 tion, if at all. London purple should never be ap- 

 plied to the leaves of peach trees, and Paris green 

 only in very weak mixtures and early in the season, 

 when the waxy covering of the leaves serves as a 

 protection. Experiments by Professor L. H. Bailey 

 of Cornell University, indicate that Paris green may 

 safely be applied to the peach mixed with water at 

 the rate of two ounces to fifty gallons. One or two 

 sprayings, soon after the fruit sets, will probably help 

 greatly in preventing curculio injury. 



Other Peach Insects. 



The trunk of the peach is sometimes infested 

 by the Flat-headed Borers of the Apple and Cherry, 

 though not often. The branches are subject to 

 the attacks of the Peach-tree Bark -louse (Lecanium 

 persiai) and the New York Weevil (Ithycerus novebo- 

 racensis) ; while the leaves are more or less affected 

 by a great variety of caterpillars, which, however, 

 rarely do any serious injury. 



Summary of Treatment. — In the Atlantic 

 States, dig refuse tobacco about the roots of any trees 

 that appear to be suffering by attacks of the Root 

 Aphis. Adopt some of the plans mentioned on page 

 78 for fighting the Peach-tree Borer, and carry them 



