14 
BULLETIN 383, U. S. DEPARTMENT OF AGRICULTURE. 
it can not be recommended as the ideal dual-purpose sorghum : that is. 
one that will furnish high yields and a good quality of both forage 
and grain, because the seeds have an appreciable amount of tannin 
in them, and this lowers its feeding value. The presence of this 
tannin also adds to the evidence supporting the theory that Schrock 
kafir is in reality a hybrid of kafir and some sorgo, since all the 
sorgos, so far as at present known, have tannin in the seed. While 
Schrock kafir may be found to possess considerable merit as a silage 
sorghum, it is not likely that any variety will be generally grown 
because it has superior value for silage alone. 
Xo general recommendation for all these varieties covering the 
whole region of the Great Plains can be made. It is quite likely 
that each locality will in time come to favor some particular variety 
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-Dwai'f Blackliull kafir (at the left) and Dwarf milo (at the right) at Hays, 
Kans., in 1915. 
of sorghum, much as is now the case with corn. Dwarf hegari. 
Dwarf feterita. and Improved feterita have all been brought to their 
present standard of excellence by continued selection. Whether all 
or any of them will in time become established varieties in any com- 
munity will depend on the impression they create on the farmers after 
they have been grown under actual field conditions for several years. 
The present publication is prepared, not for the purpose of urging 
their general adoption in preference to present well-known varieties, 
but to provide a source of information in regard to them at a time 
when they are being sent out for trial among farmers. 
Dwarf hegari has become quite popular around Chillicothe. Tex.. 
and can be highly recommended for the whole sorghum region in 
