. Fungi and fungicides; a practical manual, concerning the fungous diseases of cultivated plants and the means of preventing their ravages . 34: rUXGI AXD FUNGICIDES not worth gathering up because of the rot with whichthey are wholly or in part affected/ Other southernstates suffer equally serious losses. One orchard inArkansas has been rej^orted in which, in 1887, tlie attackof the funsfus was so severe that seventv-fiye trees ^^eldedless than twenty-fiye bushels of fruit. A photographicview of one of the depressed rotten spots as it appears onthe maturing fruit is shown in Fig. 17. This dise
. Fungi and fungicides; a practical manual, concerning the fungous diseases of cultivated plants and the means of preventing their ravages . 34: rUXGI AXD FUNGICIDES not worth gathering up because of the rot with whichthey are wholly or in part affected/ Other southernstates suffer equally serious losses. One orchard inArkansas has been rej^orted in which, in 1887, tlie attackof the funsfus was so severe that seventv-fiye trees ^^eldedless than twenty-fiye bushels of fruit. A photographicview of one of the depressed rotten spots as it appears onthe maturing fruit is shown in Fig. 17. This disease is distinguished after it has becomewell established by the jDresence of small blackish pus-. no. 17. APPLE SHOWrXG ROT SPOT. tules scattered oyer the surface of the apple. These arethe fruitinor spots of the funsrus. The mycelium whichhas penetrated the pulpy tissue of the fruit in all direc-tions, disorganizing it and causing the rot, here developsa large number of cells, which rupture the skin of theapple and produce the spores at the tips of slender pro- THE BITTER ROT 35 jecting threads. These spores are blown off by thewind, or washed downward by rain. When one of themlodges u2)on another apple, where sufficient heat andmoisture is present, it germinates by sending out a littletube, and may thus start the disease in a new the mycelium of the fungus running through theapple is carefully examined, one will see at frequentinteryals on the threads small spore-like bunches, simi-lar to those shown in B, Fig. 19. From these othermycelium threads may start. In the same figure a ger-
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpathoge, bookyear1896
