. The protection of plants [microform]. Plantes; Plant diseases; Insecticides; Agricultural pests; Ennemis des cultures, Lutte contre les; Insecticides. Kound-headed apple tree Borer Oyntcribell Hcsle. Tent caterpillar L! .„>,-- u i ^ . ™ tree Borer Hoile Canker Wonn Injurious to leaves: pink and green aphis, sucking the underside of the leaves; a large number of caterpillars feed on the leaves, particularly: tent caterpillars, yellow-necked caterpillar, tussock moth, red-humped, fall web-worms spring and fall canker worms; sphinx or large green caterpillars, leaf rollers and miners, etc, e
. The protection of plants [microform]. Plantes; Plant diseases; Insecticides; Agricultural pests; Ennemis des cultures, Lutte contre les; Insecticides. Kound-headed apple tree Borer Oyntcribell Hcsle. Tent caterpillar L! .„>,-- u i ^ . ™ tree Borer Hoile Canker Wonn Injurious to leaves: pink and green aphis, sucking the underside of the leaves; a large number of caterpillars feed on the leaves, particularly: tent caterpillars, yellow-necked caterpillar, tussock moth, red-humped, fall web-worms spring and fall canker worms; sphinx or large green caterpillars, leaf rollers and miners, etc, etc. They all contribute to diminish the vitality of the tree and to lessen its yield. Bark: oyster-shell scales, found in large numbers on the bark of old trees ; buffalo tree-hopper, tearing crescent shaped pieces of the bark for the purpose of laying its eggs; woolly aphis, causing cankers and which is more common to nurseries. Wood: flat-headed apple-tree borer, working Immediately under the bark; round-headed apple-tree borer, boring through the base of the trunk, particu- larly of yovng apple trees; bark beetle, imbricated snout-beetle. Buds: bud-moth, the larva of which destroys these organs. Diseases.—^The most widely spread is the apple scab which covers witii spots both fruits and bark; blight develops on the trunk, branches and fruits. The apple canker destroys both bark and wood. Several species of rots are also known of (bitter, brown, black and dry) and are found on the various organs of the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Maheux, Georges, b. 1889; Quebec (Province). Dept. of Agriculture. [Québec] : Dept. of Agriculture
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License: Licensed
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsecticides, bookyea
