RELATIVE RESISTANCE OF WHEAT TO BUNT 
19 
The data in Table 4 show that spelt apparently is slightly more 
resistant to bunt than emmer. The varieties grown showed an 
average of 15.9 per cent of infection. 
Such poulard wheats as were grown proved more or less susceptible 
and showed an average infection of 29.8 per cent. Winter Alaska 
(C. I. No. 5873) showed the least amount of bunt, 6.2 per cent. 
Table 4. — Percentage of bunt infection of varieties of emmer, spelt, and poulard 
wheat grown at one or all of the stations at Davis, Calif., Moro, Oreg., and Pull- 
man, Wash., in the years specified 
C.I. 
No. 
Percentages of bunted heads 
Variety 
Davis 
Calif. 
Moro, Oreg. 
Pullman, Wash. 
Average 
in all 
1920 
1921 
1919 
1920 
1919 
1920 
station 
years 
when 
grown 
EMMER 
Black Winter: 
Black Winter 
2337 
4013 
2484 
4573 
1524 
1526 
65.5 
10.0 
1.6 
1.8 
43.7 
49.4 
12.7 
6.8 
46.1 

4.3 
4.0 
39.1 
Khapli: 
Khapli 
8.4 
23.9 
Do 
.9 
Vernal : 
Vv r hite Spring . __ 
24.0 
5.6 

"14.8 
28.7 
12.3 
5.6 

18.5 
Two-year station average 
20.5 
2.8 
SPELT 
Alstroum: 
Alstroum 
1773 
1774 
4401 
4776 
4774 
3064 
1772 
2968 
73.1 
43.4 
37.8 
11.4 
12.4 
13.3 
9. 2 81. 8 
43.9 
1.1 


.9 


1.2 
35.5 
2.0 

27.0 
8.2 

20.7 
23.1 
13.3 
Black Bearded _. 

Brown Bearded . ._ .. ... 
2.2 
41.7 
33.2 
34.3 

12.1 
4.9 
.2 
7.5 
Red Spring _. . .... 
15.5 
Red Winter: 
Red Winter 
9.5 
White Spring: 
14.1 
38.0 
7.8 
1.6 
21.9 
15.9 
22.9 
11.8 
5988 
4201 
5535 
5873 
2747 
POULARD "WHEAT 
Alaska: 
14.8 
51.4 
.6 
5.6 
.4 
42.9 
14.7 
Rivet 
95.6 
22.7 
43.8 
Titanic: 
Titanic 
18.7 
13.5 
11.4 
1.9 
15.1 
Winter Alaska: 
6.4 
87.4 
3.0 
50.8 
6.2 
Do 
69.1 
40.0 
15.0 
95. 6 | 22. 7 
10.9 
18.7 
29.8 
27.5 
59.2 
14.8 
Only one variety of Polish wheat (C. I. 3007) was included in these 
experiments. It was grown for two years at Davis and Pullman. 
At Davis it had 37.3 per cent of bunt in 1920 and 12.1 per cent in 1921. 
At Pullman it snowed 1.8 per cent of infection in 1919 and 27.4 per 
cent in 1920. It averaged 19.7 per cent of infection in the four 
station years grown. 
