File:The control of citrus insects (1915) (20698822601).jpg

Title: The control of citrus insects
Identifier: controlofcitrusi129quay (find matches)
Year: 1915 (1910s)
Authors: Quayle, H. J. (Henry Josef), 1876-
Subjects: Citrus; Scale insects
Publisher: Berkeley, Calif. : University of California, College of Agriculture, Agricultural Experiment Station
Contributing Library: University of California, Davis Libraries
Digitizing Sponsor: University of California, Davis Libraries

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29 DIABKOTICA This is a black and green beetle that does injury (see fig. 17) somewhat like that of Fuller's rose beetle. The tender growth on young orange trees is attacked. Little or no injury is done to the lemon. Since these beetles fly, they cannot be controlled in the same way as Fuller's rose beetle. They may, however, be jarred off the
Text Appearing After Image:
Fig. 17.—Work of Diabrotica on orange leaves. small trees onto a canvas in the early morning before they become active, and then killed. If the injury is extensive and severe, the young growth of the trees may be sprayed with arsenate of lead, using 10 pounds to 200 gallons of water. APHIDES OR PLANT-LICE In the early spring, some of the tender shoots of citrus trees may be thickly covered with plant-lice. The result of their injury is a

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