Quince cultureAn illustrated hand-book for the propagation and cultivation of the quince with descriptions of its varieties, insect enemies, diseases, and their remedies . their mysterious increase and consequentinjury. The spores of the RcBstilia aurantiaca are fromtwenty-five to thirty thousandths of a millimeter indiameter. The only effective remedy yet discovered, is to gatherand burn the affected parts of stems and fruit before thespores are scattered to spread the disease. The RcBstilia aurantiaca on twigs attracts tiie com-mon green and brown dung beetle, Allorhina niiida. Itia a. srari
Quince cultureAn illustrated hand-book for the propagation and cultivation of the quince with descriptions of its varieties, insect enemies, diseases, and their remedies . their mysterious increase and consequentinjury. The spores of the RcBstilia aurantiaca are fromtwenty-five to thirty thousandths of a millimeter indiameter. The only effective remedy yet discovered, is to gatherand burn the affected parts of stems and fruit before thespores are scattered to spread the disease. The RcBstilia aurantiaca on twigs attracts tiie com-mon green and brown dung beetle, Allorhina niiida. Itia a. sraribcBidcB about the size of the common Li-wwn Maybeetle, and very strong. This beetle, though a friend to 90 QUIXCE CULTURE. the quince cultiyator, sometimes eats into com and vari-ous fruits. 3. Quii^CE Leaf Brown^^ess {Morthiera Mespili , 0. and E.).—This fungoid disease of theleaves is indicated by reddish-brown spots, Avhich showon both sides of the leaf, with a small black speck in thecenter of each spot, which S2:)eck, on being magnified,appears to be four spores in one, each of the four beingelliptical, and ending in a thread as long as itself. The. Fig. 61.—LEAVES AFFECTED BY MORTHIERA MESPILI. rounded spots extend into coalescing brown patches,sometimes covering a large part of the leaf. The en-largement of the spots is due to the extension of themycelium of the spores, which, as the disease progresses,kills the leaves, and they drop to the ground. The olderleaves generally show the disease first, and from them itextends toward the ends of the branches, sometimes nearlydefoliating the tree. It occurs on trees of every studying this disease, Soraner put some spores on a DISEASES OF THE QUINCE. 91 healthy pear leaf, which there c^ormiiiated, and in twoweeks produced the hrown spots with the ])hick specks inthe center. In tlie winter lie found on the fallen leaves
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1919
