332 IXJURIOUS INSECTS, WITH TREATMENT 



Preventives. — Plant early squashes as traps. As soon as the 

 early crop is gathered, burn the vines to destroy eggs and larvae 

 of the borer. Fall harrowing of infested fields will help to 

 expose the pupae to the elements. Cut out borers whenever 

 found. After the vines have grown to some length, cover some 

 of the joints with earth, so that a new root system will develop 

 to sustain the plant in case the main root is injured. 

 Strawberry. Crowx-borer {Tyloderma fragarice). — White grub, 

 one-fifth inch long, boring into the crown of the plant in mid- 

 summer. The mature insect is a curculio or weevil. 



Preventives. — Rotation of crops. Isolation of new beds from 

 infested beds. Plant uninfested plants. 

 Leaf-roller {Ancylis comptana). — Larva, less than one-half inch 

 long, feeding on the leaves, and rolling them up in threads of 

 silk ; two broods. 



Treatment. — Turn under in the fall all old beds that have 

 become worthless. Spray with arsenate of lead, 4 pounds in 

 100 gallons of water, after the eggs are laid but before the 

 leaves are folded — the first half of May in the latitude of New 

 Jersey. 

 Root-borer {Anarsia sp.). — Larva, about one-half inch long, 

 whitish, boring into the crown of the plant late in the season, and 

 remaining in it over winter. 

 Remedy. — Burn the plant. 

 Root-louse (Aphis forbesii). — From July to the close of the season 

 the lice appear in great numbers on the crowns and on the roots 

 of the plants. 



Remedies. — Rotation in planting. Disinfect plants coming 

 from infested patches by dipping the crowns and roots in kerosene 

 emulsion, or tobacco extract. Fumigation. 

 Saw-fly (Emphytus maculatus). — Larva, nearly three-fourths inch 

 long, greenish, feeding upon the leaves ; two broods. 

 Remedies. — Hellebore. Arsenicals for second brood. 

 Weevil (Anthonomus signatus). — Beetle, one-eighth inch long, 

 reddish black, feeding on flower-buds, particularly those of the 

 polleniferous varieties. 



Preventives. — Plant principally pistillate varieties. Every 

 fifth row should be of some profusely flowering staminate variety 



