. The more important fruit tree diseases of Ontario [microform]. Fruit; Pulvérisation et poudrage en agriculture; Spraying and dusting in agriculture; Fruits; Exploitations agricoles. !â *" 1. A very small percentage arise from holes made by borer larvae. " 2. They may come as an after-effect from small cracks in the trunks or limbs. The percentage thus formed is also very small. " 3. A small number itait from gum blisters under the bark. "4. A few arise a<' t'p hases of twigs killed by Brown Rot. The Brown Rot fungus works back from tne rotten fruit into the twig and t
. The more important fruit tree diseases of Ontario [microform]. Fruit; Pulvérisation et poudrage en agriculture; Spraying and dusting in agriculture; Fruits; Exploitations agricoles. !â *" 1. A very small percentage arise from holes made by borer larvae. " 2. They may come as an after-effect from small cracks in the trunks or limbs. The percentage thus formed is also very small. " 3. A small number itait from gum blisters under the bark. "4. A few arise a<' t'p hases of twigs killed by Brown Rot. The Brown Rot fungus works back from tne rotten fruit into the twig and then starts a canker in the larger limb. " 5. Wounds made by scraping the limbs, etc., are accountable for a small Small cankers on peach branches. (Original.) Natural size. " 6. Quite a few cankers start at pruning wounds. " 7. By far the greatest proportion of cankers are formed on the limbs at the bases of dead twigs. There is presumably a fungus concerned here which, after establishing itself in the dead twig, runs back into the larger limb and there starts a ; Field observations made by the writers, incline them to think that heayy pruning and heavy fertilizing, in combination with wet weather early in the growing season, may also have some effect in inducing the formation of cankers. Means of Control. Mr. W. A. McCubbin, after conducting many experiments on the healing of Peach Cankers, makes the following recommendation in regard *Bull. 24, Dominion Department of Agriculture, ; 'Frulti Tree Diseases of Southern. 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 Howitt, J. E. (John Eaton), 1880-1966; Caesar, Lawson, 1870-1952; Ontario. Dept. of Agriculture. Toronto : Dept. of Agriculture
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsprayinganddustingin
