The book Corn Diseases in Illinois was written by author Benjamin Koehler Here you can read free online of Corn Diseases in Illinois book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Corn Diseases in Illinois a good or bad book?
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They are composed largely of fungus mycelium, altho corn tissue is also distributed thruout the smut gall. Later on, the white mycelium is converted into the black smut spores. The smut galls are covered with a glistening white membrane. As the smut matures, the membrane becomes thinner and thinner until it finally breaks. The millions of tiny black smut spores are then exposed and are ready to be blown about by the wind. Cause. The common corn smut is caused by Ustilago zeae, (Beckm. ) Unger. ...This is a fungus of the class Basidiomycetes. The black spores produced in the smut gall are rough on the exterior and average 8 to 11 microns in diameter (Fig. 30). When these spores germinate, they produce only a short sprout (promycelium) microscopic in size. On this sprout a number of spores, known as sporidia or conidia, are produced. These are colorless and 1930] CORN DISEASES IN ILLINOIS 85 FIG. 41. COMMON SMUT ON LEAF (A), ON TASSEL (B), ON STALK (C) AND ON EAR (D) Common smut may occur on any of the above-ground parts of the corn plant.
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