350 The Principles of Fruit-groiinng 



in clusters on the bark at night and in cool weather, and forage 

 out upon the branches during the day. 



Arsenicals, as for codlin-moth. Bum out nests with torch, or 

 cut them out and crush the larvse. Pick off egg-masses from twigs 

 during winter and spring. 

 TussocK-MoTH (Hemerocampa lexicostigma) . — ^A handsome, red- 

 headed, yeUow-and-black tufted caterpillar, about an inch long, 

 which devours the leaves and sometimes eats into the fruit. 



Collect the frothy egg-masses in fall and winter and band the 

 trees to prevent a reinfestation by migrating caterpillars. Spray 

 with arsenicals as for codling-moth, taking care to cover the imder 

 side of the leaves. 

 Woolly Aphis (Schizoneura lanigera). — Small, reddish brown plant- 

 hce covered with a conspicuous mass of white, waxy fibers, 

 found on the branches, sprouts, trunks and roots. 



For the form above ground drench the infested parts with 15 

 per cent kerosene emulsion; for the underground form remove the 

 earth beneath the tree to a depth of 3 inches, and apply 10 per 

 cent kerosene emulsion hberaUy, and replace the earth. In the 

 case of nursery stock the emulsion may be appHed in a shallow 

 furrow close to the row. Do not set infested trees. 



Apricot. Diseases and insects require treatment similar to those of 



peach and plum. 

 Bramble Fruits. Blackberey Crown-Gall or Root-Gall (Bac- 

 terium tumefaciens). — SweUings, hard or soft, on roots and 

 stem below groiind. 



Plow up and bum all bushes in a diseased patch. Plant 

 clean roots in a new place. 

 Blackberry Leaf-Miner (Metellus rubi). — Greenish white 

 larvae, with brown markings, }4 iiioh in length when full- 

 grown, causing blotch mines in the leaves. 

 No satisfactory treatment is known. 

 Dewberry Leaf-Spot {Septoria rubi). — Small pale spots of 

 dead leaf-tissue finally becoming dotted with black specks. 

 No successful method of treatment is known. 

 Raspberry Anthracnose {Glxosporium venetum)'. — Circular or 

 elliptical, gray, scab-hke spots on the canes. 



Remove diseased canes as soon as fruit is picked. Avoid 

 taking young plants from diseased plantings. 



