. Injurious insects and the use of insecticides [microform] : a new descriptive manual on noxious insects, with methods for their repression . ch is so small that it can injurethe plant but very little, and it is very seldom that the pest is abun-dant enough to make any material diiference in the hay crop THE CURRANT AND GOOSEBERRY. THE IMPORTED CUEEANT WOEM. {Nematus ventricosus.) This is a foreign species believed to have been introduced into the United States by nurserymenabout 1857. It is a commonpest of the garden, often com-pletely defoliating currant andgooseberry bushes about thetime t
. Injurious insects and the use of insecticides [microform] : a new descriptive manual on noxious insects, with methods for their repression . ch is so small that it can injurethe plant but very little, and it is very seldom that the pest is abun-dant enough to make any material diiference in the hay crop THE CURRANT AND GOOSEBERRY. THE IMPORTED CUEEANT WOEM. {Nematus ventricosus.) This is a foreign species believed to have been introduced into the United States by nurserymenabout 1857. It is a commonpest of the garden, often com-pletely defoliating currant andgooseberry bushes about thetime the fruit is half devel-oped. The worm, when full-grown, is about three-fourthsof an inch long, green in color,with numerous black full-grown worms enterthe earth, remaining near thesurface or hiding under leavesand litter, where they spin abrown, silken cocoon, in whichthe pupal stage is passed. The perfect insect is a small, four-—The Adult of the Currant . , n mi -i • ■^rQUjj wmged saw-fly. The male is 6. Female. Lines at the left sbo^v ^ack with yellow spots, andthe natural size. {Riieij.) the female is mostly Fig. Male. SMALL FRUITS. 105 In spring the flies leave the earth and deposit their eggs upon theunder-sides of the leaves. The eggs hatch in ahout ten days, and the worms hegin at once todevour the leaves. Remedies. —Pow-dered white helleborepromptly applied tothe leaves quickly ex-terminates the pest. This insecticidekills both by contactand as a poison. Itmaybedusted overtheleaves with a powderbellows, or be mixedwith water in the pro-portions of two table-spoonfuls of the drugto one pailful of wa-ter. Sprinkle over thebushes with a water-ing-pot, or spray witha force pump andnozzle. More than oneapplication of the insecticide is often necessary
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbenefic, bookyear1894
