Diseases of economic plants (1921) Diseases of economic plants diseasesofeconom01stev Year: 1921 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 -'' 23-345 (jjstilago avence (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 th
Diseases of economic plants (1921) Diseases of economic plants diseasesofeconom01stev Year: 1921 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 -'' 23-345 (jjstilago avence (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. 156. —Loose smut on oats. After ordinary crop. By ac- Jackson. tual count of nearly
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