Fungi and fungicides; a practical manual, concerning the fungous diseases of cultivated plants and the means of preventing their ravages . ionalspring sprayings—one when the new leaves start, andanother just before the blossoms open—will prove ofmuch benefit. Young, non-bearing plantations shouldbe sprayed two or three times during summer. Literature.—The strawberry leaf-blight has fre-quently been discussed in the American literature ofplant diseases. In 1885 Professor Wm. Trelease pub-lished an article concerning it in the report of the AYis-consin Experiment Station for that year (pp. 47-58
Fungi and fungicides; a practical manual, concerning the fungous diseases of cultivated plants and the means of preventing their ravages . ionalspring sprayings—one when the new leaves start, andanother just before the blossoms open—will prove ofmuch benefit. Young, non-bearing plantations shouldbe sprayed two or three times during summer. Literature.—The strawberry leaf-blight has fre-quently been discussed in the American literature ofplant diseases. In 1885 Professor Wm. Trelease pub-lished an article concerning it in the report of the AYis-consin Experiment Station for that year (pp. 47-58).Professor F. L. Scribner has an elaborate account of it,illustrated by a colored plate, in the report of the UnitedStates Department of Agriculture for 1887 (pp. 334-341).Other articles concerning it have been published by Pro-fessor Arthur in the report of the New York Experi-ment Station (1888, p. 351); by Professor Dudley, inthe Bulletin of the Cornell University Experiment Sta-tion (XIV); and by Professor Garman in the Bulletinof the Kentucky Experiment Station. A Fungi Affecting shade Trees,Ornamental Plants and Flowers. PLATE XII. HOLLYHOCK LEAF AFFECTED WITH RUST. FUNGI AFFECTING SHADE TREES The Catalpa Leaf=spot Disease Phyllosticta catalpce Early in summer small discolored spots frequentlyappear in the leaves of Catalpa trees. Although minuteat first they gradually enlarge, and two or more oftenrun together to form brown or blackish blotches, whichsometimes involve most of the leaf. In badly affectedtrees the tissues of the leaves may be so diseased as tocause defoliation during the latter part of summer. Inless severe cases the affected areas may drop out of theleaves, round holes appearing in their stead. This disease is caused by a fungus which originatesin spores like those represented in Fig. 51, J. Whenone of these spores falls upon a moist catalpa leaf it ger-minates by sending out tubes, as illustrated in c, of thesame figure, and these germ tubes enter
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpathoge, bookyear1896
