The California fruits and how to grow them; . wings,while the females are wingless, heavy-bodied creatures. While these caterpillars can in large measure be controlled byspraying with lead arsenate or Paris green, it is by far the best to CANKER WORMS 551 use the trap method of control and avoid having them upon thetrees at all. The trap method depends for its success upon the factthat the wingless female moth upon emerging from her cocoon inthe ground immediately crawls up the trunk of the nearby tree andplaces her eggs upon the twigs. By trapping the females on theirway up into the trees no
The California fruits and how to grow them; . wings,while the females are wingless, heavy-bodied creatures. While these caterpillars can in large measure be controlled byspraying with lead arsenate or Paris green, it is by far the best to CANKER WORMS 551 use the trap method of control and avoid having them upon thetrees at all. The trap method depends for its success upon the factthat the wingless female moth upon emerging from her cocoon inthe ground immediately crawls up the trunk of the nearby tree andplaces her eggs upon the twigs. By trapping the females on theirway up into the trees no eggs can be placed near the foliage andthe caterpillars hatching from them can do no damage. The trapsare made thus: Take No. 16 or No. 14 wire cloth in strips sixinches wide, draw and tack the top edge close to the trunk of thetree over a bandage of cloth which is put on first to make the jointtight. The lower edge should flare out about an inch from the treeall around. This trap will need rather frequent cleaning while themoths are Home and work of the tent caterpillar. Tent Caterpillars.—Several species of hairy caterpillars calledtent caterpillars, or web worms, from their spinning covers ofcobweb-like material, under which they take shelter in large col-onies ; but one, at least, of the group does not spin a web, though 552 CALIFORNIA FRUITS: HOW TO GROW THEM it lives in clusters on the tree. The worms can be killed by cuttingoff and burning the twig holding the cluster or by burning thecolonies in place with a torch on the end of a pole, or by sprayingthe foliage with lead arsenate or -Paris green. The pest can bereduced while pruning by carefully collecting and burning the eggclusters, which encircle the twig. Red-Humped Caterpillar.—Striped caterpillars, not hairy, buthaving two rows of black spines along the back, also living inclusters; of reddish color with yellow and white lines; a short dis-tance back of the red head of the caterpillar is a red hump on
Size: 1279px × 1953px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectfruitculture, bookyea
