. Fig. ii,2.—M,icrosporium nobile. i, portion of dis- eased carnation ; 2, two conidia ; 3, portion of conidium germinating; 4, Fiisarium spores, mixed with, but no proof of any relationship witii, the Macrospohum. Figs. 2, 3, and 4 highly mag. Spray with animoniacal copper sulphide, or with potassium sulphide, but as carnations will not bear too much moisture, much will depend on promptly removing leaves on the first appearance of the disease, which shows on the lowest leaves first. If the stems are attacked, and in all bad cases, the plants should be burned, not thrown on one side, otherwise
. Fig. ii,2.—M,icrosporium nobile. i, portion of dis- eased carnation ; 2, two conidia ; 3, portion of conidium germinating; 4, Fiisarium spores, mixed with, but no proof of any relationship witii, the Macrospohum. Figs. 2, 3, and 4 highly mag. Spray with animoniacal copper sulphide, or with potassium sulphide, but as carnations will not bear too much moisture, much will depend on promptly removing leaves on the first appearance of the disease, which shows on the lowest leaves first. If the stems are attacked, and in all bad cases, the plants should be burned, not thrown on one side, otherwise the sclerotia will produce spores the following season, and endanger healthy plants. Clover leaf spot.—MalkofT has noticed a clover disease in Germany caused by Macrosporium sarciiiaeforme (Cav.). The fungus forms numerous minute dark brown spots on the leaves, which soon wither and die.
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Photo credit: © The Bookworm Collection / Alamy / Afripics
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Keywords: ., bookpublishernewyorkmacmillan, booksubjectplantdis, bookyear1910
