8 BULLETIN 1383, U. S. DEPARTMENT OF AGRICULTURE 
flats were photographed (Fig. 2) . One month after sowing germina- 
tion counts were made. The average percentages of germination of 
the three lots were as follows: Untreated wheat, 88 per cent; wheat 
treated by the modified method, 66.8 per cent; wheat treated by the 
single-bath method, 81.7 per cent. These results indicate that the 
wheat treated by the modified method was injured rather severely; 
but, as shown in Figure 2, the injurious effects undoubtedly were 
greater than indicated by the reduction in germination. The 
emergence and growth of the seedlings were retarded in varying 
degrees; hence, uneven stands were obtained. The emergence of 
f & ^ g j? /& // /z /s /<? /jF /£ /r /<? x? 
Fig. 1.— Diagram showing the comparative rates of emergence and number of wheat plants which 
emerged from seed untreated, treated by the modified hot-water method, or treated by the 
single-bath method at 48° C. for 1 hour and 40 minutes, 1 hour and 50 minutes, and 2 hours, 
respectively 
seedlings from wheat treated at 48° C. for 1 hour and 50 minutes was 
fairly even, although somewhat retarded at the start. Fourteen days 
after sowing, however, as shown in Figure 2, the seedlings appeared 
almost as vigorous as those from untreated seed. 
YIELD AND CONTROL OF LOOSE SMUT AND BUNT 
In an experiment to determine the effects of single-bath hot-water 
treatments on the control of loose smut and bunt three lots of Goens 
wheat (Nos. 18, 20, and 21) were used. They were grown in Indiana 
in 1921 and contained relatively high percentages of loose smut. 
Some of each lot was dusted thoroughly with bunt spores, and quan- 
tities were treated during the period from October 11 to 15, 1921. 
