. Injurious insects and the use of insecticides [microform] : a new descriptive manual on noxious insects, with methods for their repression . g into pans or cans containing water or kerosene oilis resorted to in the south. Pyre thrum in powder or decoction andstrong kerosene emulsion may prove effectual when the bugs areyoung. By far the most promising method of dealing with the pestis that of Professor H. E. Weed, of the Mississippi AgriculturalExi^eriment Station. Wild mustard, when young and tender, is pre-ferred by the bugs even to cabbage, and this is one of the earliestcruciferous plant
. Injurious insects and the use of insecticides [microform] : a new descriptive manual on noxious insects, with methods for their repression . g into pans or cans containing water or kerosene oilis resorted to in the south. Pyre thrum in powder or decoction andstrong kerosene emulsion may prove effectual when the bugs areyoung. By far the most promising method of dealing with the pestis that of Professor H. E. Weed, of the Mississippi AgriculturalExi^eriment Station. Wild mustard, when young and tender, is pre-ferred by the bugs even to cabbage, and this is one of the earliestcruciferous plants to appear in spring. In 1891, Professor Weed killed the bugs upon themustard plants with purekerosene, but in 1892 hedecided to sow mustardbetween the rows to beplanted in cabbage. Themajority of the hibernatingbugs clustered upon theearly mustard plants andwere killed with purekerosene ; the cabbage escaped almost entirely from the depredationsof the insects. We recommend this course to cabbage growers, wher-ever the pest is troublesome. Where mustard has not been provided,try spraying with a pretty strong pyrethro-kerosene Fig. 112.—Harlequin , 6. Nymphs, c. Eggs. d. Eggs, side view. , view from above, d, e. Enlarged. {Riky.) 136 INJURIOUS INSECTS. THE CABBAGE MAGGOT. {Anlhomyia brasslcw.) The adult, which appears about the time the plants are set out, isa two-winged fly somewhat resembling the common house &y. Theeggs are laid on the stems of the young plants near the surface of thesoil and soon hatch into small, whitish maggots, which work down-ward into the earth, feeding on the roots of the tender plants. In about three weeks from hatching, the maggots pupate and in afew days emerge as adult flies. Three and probably more broods ap-pear each season. This insect also attacks turnips and ruta bagas. Remedies.—The maggots are easily destroj^ed by the use of kero-sene emulsion about the roots. Dr. Riley has suggested the use ofslaked lime o
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbenefic, bookyear1894
