[Fruit culture] . provided with neatly fitting lids they will remain ingood shape for several years. INSECTS AND DISEASES OF THE APPLE INSECTS AFFECTING THE APPLE 22. It is estimated that over $700,000,000 is annually lostfrom the work of insects in the United States. Probably nocrop suffers greater from the ravages of insects than does theapple crop. It is estimated that in New York State alonean annual loss from the codling moth, including the expenseof spraying, is at least $3,000,000. Although there are a greatnumber of insects that may at times infest apple orchards,most of these insects
[Fruit culture] . provided with neatly fitting lids they will remain ingood shape for several years. INSECTS AND DISEASES OF THE APPLE INSECTS AFFECTING THE APPLE 22. It is estimated that over $700,000,000 is annually lostfrom the work of insects in the United States. Probably nocrop suffers greater from the ravages of insects than does theapple crop. It is estimated that in New York State alonean annual loss from the codling moth, including the expenseof spraying, is at least $3,000,000. Although there are a greatnumber of insects that may at times infest apple orchards,most of these insects are controlled by spraying the trees withan insecticide. It is important, therefore, that a fruit growerbecome acquainted with each of the more common apple insectsand the means of combating them. 23. Apple-Tree Borers.—The apple tree is attacked bythree species of borers, the round-headed apple-tree borer, thespotted apple-tree borer, and the fiat-headed apple-tree borer. 248^19 24 APPLE PESTS AND INJURIES §0. Fig. 10 The adult round-lieaded apple-tree borer, shown inFig. 10 (a), is a long-homed beetle with two white stripes downits back and is from f to neariy 1 inch in length. The adultsvary a month or so in the time they emerge from the pupal stage, but they usually comeout about the last of to the fact that theadiilts may emerge duringa period of from 1 to 2months, the eggs are de-posited during a period ex-tending for nearly 2 monthsfrom about the last of eggs are pale rustybrown in color, |- inch long,about one-third as wide aslong, and about one-thirdas thick as wide. They are deposited at night, usually in the barkof the trunk near the ground, but they are sometimes depositedhigher up. A side view of the larva is shown in Fig. 10 (b), and aview from above is shown in (c). During the first year afterhatching these larvas, or borers, burrow into the sap wood anddownwards. The second year a borer usually works more orless into the hard wood and upwards;
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Keywords: ., bookcentury1900, bookdecad, booksubjectfruitculture, bookyear1912
