. Diseases of economic plants. Plant diseases. 296 Diseases of Economic Plants The formalin treatment, 1 pint to 40 gallons, is applicable to both of these smuts. MILO. See p. 307. OAT Loose-smut ^-^' ^^^"^"^^ {Ustilago avenos. (Pers.) Jens.). — Under the name "smut," "blackheads," etc., this disease is known wherever oats are grown. Grain and more or less of the chaff are replaced by a powdery, black mass, which shat- ters out as it ripens, leav- ing later only the naked branches of the panicle. Usually all the spike- lets of a head and all the heads of the affec
. Diseases of economic plants. Plant diseases. 296 Diseases of Economic Plants The formalin treatment, 1 pint to 40 gallons, is applicable to both of these smuts. MILO. See p. 307. OAT Loose-smut ^-^' ^^^"^"^^ {Ustilago avenos. (Pers.) Jens.). — Under the name "smut," "blackheads," etc., this disease is known wherever oats are grown. Grain and more or less of the chaff are replaced by a powdery, black mass, which shat- ters out as it ripens, leav- ing later only the naked branches of the panicle. Usually all the spike- lets of a head and all the heads of the affected plant are smutted. There is considerable dif- ference in the resistance offered by different va- rieties, but in view of the perfect protection af- forded by proper treat- ment this is of little significance. The damage caused by smut is commonly under- rated. In 1884 Arthur in New York by actual count found the oat smut to constitute from to 10 per cent of the Fig. smut on oats. After ordinary crop. By ac- Jackson. tual count of nearly. 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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