28 BULLETIN 1284, 17. S. DEPARTMENT OF AGRICULTURE 
hull (Africa, C. I. No. 321) was grown four years at Manhattan and 
three years at Amarillo, the average infection being 24.1 per cent 
and 24.2 per cent, respectively. At Rosslyn 3.4 per cent and at 
Brooklyn 41.2 per cent of infection occurred. Blackhull Dwarf 
(C. I. No. 628) was grown only at Brooklyn, where it showed 51.1 
per cent of infection. 
One strain of Dawn kafir was grown at Columbia in 1915, 16.2 
per cent of the plants being infected. Dawn kafir (C. I. No. 340) 
was grown at Manhattan six years and at Arnarillo four years, the 
average infection at the former station being 14.3 per cent and at 
the latter 17.1 per cent. At Rosslyn 42.3 per cent and at Brooklyn 
43.3 per cent of the plants were infected. Dawn kafir (F. C. I. No. 
1932) grown at Brooklyn showed 36.6 per cent infection. 
Sunrise kafir (C. I. No. 472) was grown five years at Manhattan 
and four at Amarillo, the average infection being 22.9 per cent and 
21.6 per cent, respectively. At Rosslyn 29.2 per cent of infection 
and at Brooklyn 39.3 per cent was obtained. 
A strain of White kafir was grown for one season at Columbia, 9.3 
per cent of the plants being infected. White kafir (C. I. No. 252) 
was grown four years at Manhattan and Amarillo. At the former 
station the average infection was 24.7 per cent and at the latter 
15.8 per cent. ' White African kafir (C. I. No. 314) also was grown four 
years at both Manhattan and Amarillo, the infection percentages 
being 21.4 and 20.4, respectively. At Rosslyn 31.1 per cent and 
at Brooklyn 17.9 per cent of the plants were infected. 
Two strains of Pink kafir were grown at Columbia, Missouri No. 
37 for two years and Missouri No. 94 one year. The former showed 
62.3 per cent infection and the latter 32.7 per cent. Pink kafir 
(C. I. No. 432) was grown at Manhattan and Amarillo four years, 
with average infections of 39.1 per cent and 25.1 per cent, respec- 
tively. At Rosslyn 18.5 per cent infection was obtained. A Pink 
kafir from the Kansas station was grown two years at Manhattan 
and one year at Amarillo. At Manhattan 32 out of a total of 109 
plants, or 29.4 per cent, were infected; at Amarillo an infection of 
29.6 per cent was obtained. Pink kafir (F. C. I. No. 1930) was grown 
at Brooklyn, where an infection of 31 per cent was recorded. Late 
Pink kafir (F. C. I. No. 9439) at Brooklyn showed 43.8 per cent 
infection. 
Pale Red kafir (C. I. No. 316) was grown five years at Manhattan 
and three at Amarillo, showing 30.7 per cent and 23.5 per cent of 
infection, respectively- At Rosslyn 14.3 per cent and at Brooklyn 
50 per cent ot the plants were infected, the number of plants in each 
case being small. 
Four strains of Red kafir were grown at Columbia, 215 plants out 
of a total of 775, or 27.7 per cent, being infected. Red kafir (C. I. 
No. 34) was grown four years at Manhattan and Amarillo, the aver- 
age infection at the former station being 21 per cent and at the latter 
19.2 per cent. At Rosslyn 54.7 per cent of the plants were infected 
and at Brooklyn 65.5 per cent. A Kansas station strain of Red kafir 
at Manhattan showed 34.8 per cent infection in 1919. At Brooklyn 
a strain (Missouri No. 202) showed 18.8 per cent infection and C. I. 
No. 323, 24.2 per cent. 
These results clearly indicate that all the varieties of kafir are 
very susceptible to covered kernel smut. 
