. The Canadian horticulturist [monthly], 1892. Gardening; Canadian periodicals. 2l6 The Canadian Horticulturist. HLACKHERRV RUST. SiR,_Euclosecl you will Hiul diseased Blackcap leaves (Souhegan). Please examine, and let me know what the disease is. la it infectious, and what is the best thing to do for it? ^ „ „ „ Gko. Smith, Vamlla. The Blackcap leaves which you send are covered with blackberry rust, a fuiT^us known to mycologists as Ca3onia nitens. Experiments have been made to ascertain whether the mycelium, or portion of the fungus which grows in the interior, is perennial ; it has been pr
. The Canadian horticulturist [monthly], 1892. Gardening; Canadian periodicals. 2l6 The Canadian Horticulturist. HLACKHERRV RUST. SiR,_Euclosecl you will Hiul diseased Blackcap leaves (Souhegan). Please examine, and let me know what the disease is. la it infectious, and what is the best thing to do for it? ^ „ „ „ Gko. Smith, Vamlla. The Blackcap leaves which you send are covered with blackberry rust, a fuiT^us known to mycologists as Ca3onia nitens. Experiments have been made to ascertain whether the mycelium, or portion of the fungus which grows in the interior, is perennial ; it has been proved that it does live through the winter on the underground stem, hence the Bordeaux mixture, or any of our excellen. Flli 52. — NlTKNS, OkAN(;K Kl >T ok TMK copper solutions, though effective in destroying the spores, will fail of entirely destroying the fungus that produces them. 'I'he only effectual remedy is to root out and burn up all affected bushes, as soon as seen, and before the yellow dust his been blown to healthy plants. The blackberry, especially the Kittalimiy, is badly subject to this rust. We have .almost L'iven up growing this excellent variety on this 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 St. Catharines, E. S. Leavenworth
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