. Injurious insects : how to recognize and control them . Insect pests; Insect pests. SMALL, ACTIVE WHITE FLIES OX FOLIAGE 205 and further obserA-ation will disclose the minute, slender insects that are doing the mischief. They are one twenty-fifth of an inch long, the larger winged indi^-iduals in color and the smaller wing- less forms somewhat pinkish. Winter is passed in debris at the base of the plants. There are several generations in the course of a summer. Remedies are rotation of crops, or burning over infested fields in winter. The Greenhouse White-fly {Akuwdcs vaporarionim
. Injurious insects : how to recognize and control them . Insect pests; Insect pests. SMALL, ACTIVE WHITE FLIES OX FOLIAGE 205 and further obserA-ation will disclose the minute, slender insects that are doing the mischief. They are one twenty-fifth of an inch long, the larger winged indi^-iduals in color and the smaller wing- less forms somewhat pinkish. Winter is passed in debris at the base of the plants. There are several generations in the course of a summer. Remedies are rotation of crops, or burning over infested fields in winter. The Greenhouse White-fly {Akuwdcs vaporarionim Westw.) ^Vhere^â er jilants are grown luider glass this troublesome pest is sure to put in its appearance, and injure the plants by sucking their Fig. Zo\. â Larva' and adult of the Greouhouso White-fly. Eidarged. Originah The adults ha-\-c foiu- wings, co^-ered with a whitish powder, and are active creatures, flying readily. They are about tluee fiftieths of an inch in length. The young are flattened, oval in shape, and have sucking mouth parts, Uke the adults. The insect is nearly always found on the under side of the leaves, and prefers the younger foliage at the upper part of the plant. The leaves attacked lose their Aitahty, and if the insect is not checked, the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original O'Kane, Walter Collins, b. 1877. New York : The Macmillan Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1912
