. Bulletin. Agriculture -- Ontario. 14 thoroughly applied. Recent Bulletins (Nos. 154 and 157) give full par- ticulars as to the ingredients and method of manufacture of this wash; it. should be applied toward the end of April or beginning of May before the buds on the trees show signs of opening. One thorough application will destroy almost all the scales, but a very few survivors will soon re- stock a tree, as they are so extraordinarily prolific. It is necessary, there- fore, to repeat the spraying year after year until none whatever are left. The task is a disagreeable one, and the labor i
. Bulletin. Agriculture -- Ontario. 14 thoroughly applied. Recent Bulletins (Nos. 154 and 157) give full par- ticulars as to the ingredients and method of manufacture of this wash; it. should be applied toward the end of April or beginning of May before the buds on the trees show signs of opening. One thorough application will destroy almost all the scales, but a very few survivors will soon re- stock a tree, as they are so extraordinarily prolific. It is necessary, there- fore, to repeat the spraying year after year until none whatever are left. The task is a disagreeable one, and the labor involved is expensive, but it will pay in a single season through the improved quality and yield of the fruit; while its neglect simply means the speedy death and loss of the entire Fig. 23. San Jose Scale. The Oyster-Shell Bark-Louse (Mytilaspis ulmi), Figs. 24-26, ranks next to the preceding as a destructive scale insect. It is to be found everywhere throughout the Province, and inflicts an immense amount of damage on apple and other fruit-trees ; it is especially abundant in old and neglected orchards. Fortunately it is single-brooded, and therefore does not increase very rapidly; if it were continuously brooded, like the San Jose" Scale, it would long ago have completely wiped out the apple and many other fruit-trees of Ontario. It may be readily identified by its peculiar shape, which resembles that of an oyster-shell, and may usually be found in large numbers, sometimes completely encrusting the bark of twigs and branches; occasionally individuals even make their abode on the fruit. During the winter the insect is in the egg stage and protected. 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 Ontario. Dept. of Agriculture. Toronto : The Dept.
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