. 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 Arthur1 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 Plumb2 in 1886 determined the amount of smut to be per cent; in some fields he found as high as 20, 28
. 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 Arthur1 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 Plumb2 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,3 counting smutted heads i Arthur, J. C, (Geneva). Agr. Exp. Sta. Rpt. 3, p. 382, 1884. 2 Plumb, C. S., (Geneva) Agr. Exp. Sta. Rpt. 5. 3 Kellerman, W. A., and Swingle, W. T., Kans. Agr. Exp. Sta. Rpt., p. 213, 1889. Fig. 147. — Smut (Vstilago avenoe) on oats. After Jackson.
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Keywords: ., bookauthorstevensf, bookcentury1900, bookdecade1910, bookyear1910
