. Fungi and fungicides; a practical manual, concerning the fungous diseases of cultivated plants and the means of preventing their ravages . for in the publi-cations of the Division of Vegetable Pathology. The Pear Scab Fusicladiuni pyrinum This disease is very similar to apple scab, the fun-gus, in fact, being believed by many botanists to be thesame species. At any rate, the chief points in the life-history and remedial treatment are the same as for theapple disease. Care should be taken not to apply the Bordeauxmixture too late in the season. Early varieties shouldhave but one spraying with
. Fungi and fungicides; a practical manual, concerning the fungous diseases of cultivated plants and the means of preventing their ravages . for in the publi-cations of the Division of Vegetable Pathology. The Pear Scab Fusicladiuni pyrinum This disease is very similar to apple scab, the fun-gus, in fact, being believed by many botanists to be thesame species. At any rate, the chief points in the life-history and remedial treatment are the same as for theapple disease. Care should be taken not to apply the Bordeauxmixture too late in the season. Early varieties shouldhave but one spraying with this mixture after the fruit^sets, and late varieties but two. Where additionalapplications are needed, use the copper carbonate solution. FUNGI AFFECTING THE QUINCE The Leaf=blight and Fruit=spot Entomosporium maculatum The leaves of quinces often become dotted withsmall round brown spots, resembling Fig. 23, which gradually become more numerous,and may finally run together toform large blotches, as shown inFig. 21 (p. 41), inyolving, occa-sionally, the whole leaf, and caus-ing the premature dropping ofthe foliage. This is the same. fungus that causes the leaf-blightof the pear, and the main pointsin its development have alreadybeen described (pp. 41-44).Quince fruit, as well as foliage, isattacked by it, the effect on theFIG. 23. QUINCE LEAF-BLIGHT fl.^it bclug secniu small brown,or blackish spots which appear on the surface, and havegiven the disease the name of fruit-spot. Several ofthese spots frequently run together, and sometimes alarge part of the surface becomes affected. The fungusdwarfs the fruit, and renders it less salable. The defo-liation of the trees, of course, greatly reduces theirvitality. Young quince trees in the nursery are espe-cially liable to injury by this disease, as it causes the 47 48 FU^s^GI AXD FUXGICIDES leaves to fall off during summer, and so i^revents thegrowth necessary for successful grafting. Treatment.—The treatment recommended for thep
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpathoge, bookyear1896
