ORCHARD CARE 153 



bit of putty or soap in place to close the hole. The 

 same treatment is effective in disposing of apple and 

 peach tree borers. 



Occasionally the hickory shuck worm, Gramolethe 

 caryana, proves injurious to the nuts of individual 

 trees. 



A number of species of insects beside the common 

 ones here described are to be reckoned with. Mr. 

 Fred E. Brooks, of the United States Department 

 of Agriculture, is situated at French Creek, West 

 Virginia. He will gladly make investigations and 

 offer suggestions for all who apply to him in relation 

 to the subject of nut tree insects. 



The almond trees and the nut group of apricots 

 are subject to attack by the common peach borers and 

 an examination of the trees near the ground will 

 reveal the presence of the borers. On the whole, 

 the nut trees perhaps have fewer parasites than any 

 other fruit bearing trees. One reason is that only 

 recently have nut trees been planted in orchard form, 

 giving their enemies an opportunity to increase in 

 orchard form likewise. 



Fungous parasites of trees seem to have fewer 

 natural enemies than insect parasites have, although 

 fungi are often destroyed by other parasitic fungi or 

 by bacteria which prey upon them in turn. The 

 same is true of bacterial parasites. There are two 

 chief ways in which a fungous parasite' may disap- 

 pear naturally without any push given by the horti- 

 culturist: i. By way of increase of its natural 

 enemies and (2) by the running out of its stock 



