. Diseases of economic plants. Plant diseases. 356 DISEASES OF ECONOMIC PLANTS The smut closely resembles the stinking smut of wheat. The affected ovaries or grains are transformed into stum masses which remain within the glumes, and so resemble the normal grains as to often be mistaken for them. The fungous mycelium grows within the stem tissue of the diseased plant, and, as is the case with wheat bunt, infection prob- ably occurs in the seedling stage, and the fungus remains un-. FiG. 153.—-Three rice spikelets : .4, normal ; fi, smutted ; r, glumes partly torn away exposing the spore mass.
. Diseases of economic plants. Plant diseases. 356 DISEASES OF ECONOMIC PLANTS The smut closely resembles the stinking smut of wheat. The affected ovaries or grains are transformed into stum masses which remain within the glumes, and so resemble the normal grains as to often be mistaken for them. The fungous mycelium grows within the stem tissue of the diseased plant, and, as is the case with wheat bunt, infection prob- ably occurs in the seedling stage, and the fungus remains un-. FiG. 153.—-Three rice spikelets : .4, normal ; fi, smutted ; r, glumes partly torn away exposing the spore mass. After Anderson. noticed until its presence is disclosed in the place of the grain, as a black spore mass. The disease can be controlled, should it again appear, by the methods which stamped it out in South Carolina; that is, by floating out and removing the light and smutted seeds in cold water, then soaking the seed for twenty-four hours in liver of sulphur, 11 pounds in 25 gallons of water, or by employing a 2 per cent solution and soaking the seed only two hours. Damping off. — Two forms of damping off of seedUngs are known: —. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stevens, Frank Lincoln, 1871-1934; Hall, John Galentine, 1870-. New York, Macmillan
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Keywords: ., bookauthorstevensf, bookcentury1900, bookdecade1910, bookyear1910
