. The American fruit culturist, containing directions for the propagation and culture of all fruits adapted to the United States. Fruit-culture. DESTRUCTIVE INSECTS. igi is amenable to the same remedial measures as the plum cur- culio. The Black Peach Aphis {Aphis prunicola) is a brownish-black piant-louse (Fig. 257) infesting the leaves, twigs, and roots of peach-trees. Trees less than three or four years old suffer most from its ravages. Thousands of such trees have been killed by it in Eastern peach-grow- ing districts, and the pest has in- vaded Northern orchards. Peach stocks should be ca
. The American fruit culturist, containing directions for the propagation and culture of all fruits adapted to the United States. Fruit-culture. DESTRUCTIVE INSECTS. igi is amenable to the same remedial measures as the plum cur- culio. The Black Peach Aphis {Aphis prunicola) is a brownish-black piant-louse (Fig. 257) infesting the leaves, twigs, and roots of peach-trees. Trees less than three or four years old suffer most from its ravages. Thousands of such trees have been killed by it in Eastern peach-grow- ing districts, and the pest has in- vaded Northern orchards. Peach stocks should be care- fully examined before setting, and if there are any indications of plant-lice on them, they should be dipped in a strong kerosene emul- sion or whale-oil soap solution. It is a difficult matter to destroy the lice on the roots after the tree is ^""- 257.âThe Black Peach set. Tobacco dust well worked in ^^''''' 7'°^'^=^ f°â¢' â "" emargea. around the base of the trees has given relief in some cases. The lice which work on the tree above ground can be killed with a spray of kerosene emul- sion diluted ten or twelve times or with a kerosene-water mixture containing 15 per cent, of kerosene. The Peach-tree Borer {Sanninoidea exitiosa) " has killed more peach trees than all other causes combined," says J. H. Hale. It is an American insect and has been a serious menace to peach-growing for more than a hundred years. It sometimes also attacks plums, prunes, cherries, apricots, and nectarines, and has to be fought by nearly every peach-grower. The borer is a white, grub-like caterpillar (Fig. 258 c), which feeds on the inner bark, forming a tunnel or burrow, usually on the trunk or large root below the surface of the soil. Infested peach trees are easily distinguished by the large mass of a gummy substance exuded from the wound and mixed with particles of bark and excrement. The adult in- sect is a beautiful, blue, wasp-like moth, the male (F
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectfruitculture, bookyea
