. Diseases of economic plants . Plant diseases. 344 DISEASES OF ECONOMIC PLANTS. Usually all the spike- lets of a head and all the heads of the affected plant are smutted. There is considerable difference in the resistance of- fered by different va- rieties, but in view of the perfect protection afforded by proper treatment this is of little significance. The damage caused by smut is usually underrated. In 1884 Arthur^ in New York by actual count found the oat smut to con- stitute from to 10 per cent of the ordi- nary crop. By actual count of nearly 11,000 heads Plumb = in 1886 determined
. Diseases of economic plants . Plant diseases. 344 DISEASES OF ECONOMIC PLANTS. Usually all the spike- lets of a head and all the heads of the affected plant are smutted. There is considerable difference in the resistance of- fered by different va- rieties, but in view of the perfect protection afforded by proper treatment this is of little significance. The damage caused by smut is usually underrated. In 1884 Arthur^ in New York by actual count found the oat smut to con- stitute from to 10 per cent of the ordi- nary crop. By actual count of nearly 11,000 heads Plumb = in 1886 determined the amount of smut to be per cent; in some fields he found as high as 20, 28, and even 30 per cent. Kellerman and Swingle,^ counting smutted heads > Arthur, J. C, (Geneva) Agr. Exp. Sta. Rpt. 3, p. 382, 1884. => Plumb, C. S., (Geneva) Agr. Sta. Rpt. 5. 3 Kellerman, W. A., and Swingle, W. T., Kans. Agr. Exp. Sta. Rpt., p. 213, 1889. Fig. 147.—Smut (Ustitago avencs) on oats. After 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
