A Bulletin on Orchard Practice 



15 



"apple-root aphis." While not as common as the woolly aphis 

 working in the tops, it is even more destructive when found. 

 Galls which resemble crown-gall are produced on the small 

 roots by its attack. A remedy recommended for this is to re- 

 move the earth from around the base of the tree and treat 

 with kerosene emulsion. This pest is likely to be introduced 

 on nursery stock and serves as a warning to the planter for 

 close inspection. F. A. H. 



APPLE-ROOT APHIS a, Infested Root; 6, Larva; c, Perfect Insect. 



THE PEACH TWIG-BORER. 



This insect has come to be a serious pest" in some of the 

 peach-growing communities in this state. The first attack is 

 made upon the young twigs in the spring by the larvae 

 (worms) boring into the tips. A late brood infests the fruit, 

 and it is the late varieties of fruit that indicate the greatest 

 loss to the fruit-grower. 



The adult is a small dark-gray moth which reaches matur- 

 ity in August and later. The moths lay their eggs in the crotches 

 of the smaller branches. When the eggs hatch the larva 

 bore into the bark and there remain until the following 

 spring. 



The Kerosene Emulsion Spray will destroy the worms if 

 thoroughly applied late in the winter or early spring. In 



