The Journal of the Department of Agriculture, Victoria . ! of Iniit Trees. 427 Their method of attack is similar to that of the grten peach aphis. Theinsects concentrate at the ends of the young and tender growths which curl,wilt, and die hack. This pest is easily recogni.sed. The majority of the. insects are of a blackish colour, whilst some are brownish and others aregreen. Treatment.—The methods recommended fcr peach aphs attacking seed-lings, growing buds, &c., should be followed. p 2 4::8 Journal of Agriciillnrc, Yiciorla. [lo July. 1912. Woolly Aphis or American Blight—Schizoneura lanige
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The Journal of the Department of Agriculture, Victoria . ! of Iniit Trees. 427 Their method of attack is similar to that of the grten peach aphis. Theinsects concentrate at the ends of the young and tender growths which curl, wilt, and die hack. This pest is easily recogni.sed. The majority of the. insects are of a blackish colour, whilst some are brownish and others aregreen. Treatment.—The methods recommended fcr peach aphs attacking seed-lings, growing buds, &c., should be followed. p 2 4::8 Journal of Agriciillnrc, Yiciorla. [lo July. 1912. Woolly Aphis or American Blight—Schizoneura lanigera {^Hausman).-—^This aphis is one of the greatest pests the apple-grower has to contendwith. If detected in the nursery, no time should be lost in dealing withit. Jhe presence of woollv aphis is easily detected by the white woollymatter produced by the insects, such matter forming a protective covering, beneath which the aphides cluster and, carry on their work. When com-mencing operations, thev usually choose the under or sheltered side of thebranches or twigs close to or around the buds, gradually extending alongthe whole branch or twig. By forcing a beak or sucker intj the bark, theyare enabled to live upon the plant sap. The irritation produced by thispiercing operation cause