Ontario Sessional Papers, 1901, . gh the epidermis in dense fasci-cles, giving rise to the black wart-like spore masses. • Pure cultures of this fungus were made on various media, and from these it wasseen that we had to do with a new fungus. A technical description of this new specieshas been published in the Botanical Gazette (December, 1900) under the name Trimma-tostroma abietina. So far the only trees found affected with this disease are the balsam [Abies bal-samea), and the white spruce [Abies alba) ; but there is little reason to expect that theNorway Spruce [Picea excelsa) is
Ontario Sessional Papers, 1901, . gh the epidermis in dense fasci-cles, giving rise to the black wart-like spore masses. • Pure cultures of this fungus were made on various media, and from these it wasseen that we had to do with a new fungus. A technical description of this new specieshas been published in the Botanical Gazette (December, 1900) under the name Trimma-tostroma abietina. So far the only trees found affected with this disease are the balsam [Abies bal-samea), and the white spruce [Abies alba) ; but there is little reason to expect that theNorway Spruce [Picea excelsa) is immune. No preventive remedies have so far been experimented with ; but judging fromthe nature of the disease we think it would be advisable to cut off all brancheswhich show a diseased appearance, near the trunk of the tree, as the fungus is perennialand works usually from the ends of the branches towards the main stem In bad casesthe trees should be cut down and burned. This treatment is, of course, practicableonly over limited Insect Breeding Cage. Fig. 7.—a, sliding glass door ; h, galvanized iron base ; c, galvanized iion holder of note showingwhat is inside ; d, wooden base ; e, wooden bottom, detachable. (After Webster.) moo J AGRICULTURAL COLLEGE. 21 Invkstigations Undkrtaken.—The annual loBs in the Province, due to smut on oatsand wheat, is very large ; and farmers feel that it is necessary to treat the seed beforeplanting so as to kill the smut spores adhering to the grain. There are two commonmethods of treatment in use : Th^ bluestone and the hot methods. Both methodsare effective, but both have their defects. The hot wa^er treatment is cumbersome,and is liable to be carelessly done, or not done at all; while the bluestone treatmentretards germination, and occasionally kills the seed. Our investigations on hand aim atdt^termining the best percentage of bluestone solution—one which will retardgermination a^ little as possible, and at the same t
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