. The fruit-growers guide-book. s insect is not at ail difficult to control, as any ofthe mixtures used for controlling scale will keep it incheck. Lime-sulphur, kerosene emulsion and miscible oilshave all been effective in preventing injury from this insecton both apples and pears. Pear Slug. Pear trees are attacked by this insect in thesummier and again in the late summer or fall. It feeds onthe upper surface of the leaves, leaving only the thus eaten falls from the tree and leaves the treesbare. This insect during its early stages is a slimy slug. Black Peach Aphis 149 hut aft
. The fruit-growers guide-book. s insect is not at ail difficult to control, as any ofthe mixtures used for controlling scale will keep it incheck. Lime-sulphur, kerosene emulsion and miscible oilshave all been effective in preventing injury from this insecton both apples and pears. Pear Slug. Pear trees are attacked by this insect in thesummier and again in the late summer or fall. It feeds onthe upper surface of the leaves, leaving only the thus eaten falls from the tree and leaves the treesbare. This insect during its early stages is a slimy slug. Black Peach Aphis 149 hut after its last moult the slimy covering is thrown offand the skin becomes a light orange color and clean anddry. It then goes into the ground, and emerges again intwelve or fifteen days as a fly. It spends the winter in thepupal stage just under the surface of the soil. Arsenicalpoisons, either dusted or sprayed on the foliage will con-trol it. Because of its slimy nature, even road dust thrownon it often results in The bag-worm: A, caterpillar removed from the bag;b. male chrysalis; c, wingless and legless female moth; d,winged male; e, bag cut open showing female chrysalis andeggs; f, caterpillar in the bag; g, cones made by the littlecaterpillars as they are beginning to spin their bags. Black Peach Aphis. These plant lice are shining blackin color, one form having wings and the other possessingnone. They feed upon the juices of the peach, cherry andplum trees, working upon the leaves, stem and roots. Theycan be controlled on the leaves and twigs by spraying withthe tobacco preparations as for green aphis. If very nu-merous on roots, scrape the soil away and apply pulverizedtobacco. 150 The Fruit-Growers Guide-Book Bagworm. These insects infest nearly all kinds of treesand shrubs, and will consume a large quantity of foliageduring the summer, frequently defoliating the trees com-pletely. It is the larva of a moth, that over-winters inthe egg stage within the old
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfruitculturefromoldc
