GRAIN-SORGHUM EXPERIMENTS IN THE PANHANDLE OF TEXAS. 53 
THe Karin GROUP. 
The kafir group already has been described and the leading varie- 
ties separated by means of a simple key. They are the largest plants 
and the latest in maturing of all the groups. While there is con- 
siderable difference in size and earliness between the different varie- 
ties of kafir, none of them is both as dwarf and as early as some vari- 
ety in each of the other groups except, perhaps, shallu. In most of 
the southern Great Plains area, the kafirs were the first varieties to be 
extensively grown. 
In Texas the milos 
probably had the 
start of the kafirs, 
but in Oklahoma 
the widespread pro- 
- duction of milo has 
been a more recent 
development, while 
in Kansas milo is 
scarcely yet a com- 
petitor of kafir. 
Heads of four vari- 
eties are shown in 
figure 8. 
The results ob- 
tained from the vari- 
ous kafirs are shown 
in Tables XIX to 
XXX, inclusive. It 
will be noted that, 
on the whole, the 
kafirs have made 
their good yields in 
years of normal rain- 
fall and have yielded Fic. 8.—Heads of four varieties of kafir: A, White kafir; B, Guinea 
little in years of de- kafir (Guinea corn of the West Indies); C, Biackhull kafir; D> 
A ae 5 Red kafir .(About one-fifth natural size.) 
ficient precipitation. 
Since corn can not be grown at all under these conditions, it is no 
disparagement to the grain sorghums that some are less adapted than 
others. Each variety or subgroup of the kafirs is considered sepa- 
rately, and the results obtained are shown in separate tables. 
BLACKHULL KAFIR. 
The number of different lots and selections of Blackhull kafir 
which have been under experiment has decreased from 19 at the 
beginning, in 1908, to only 5in 1916. They vary little among them- 
