44 BULLETIN 698, U. S. DEPARTMENT OF AGRICULTURE. 
days, in the abnormally dry season of 1916. The average duration 
in normal seasons is about 95 days. 
Germination, and consequent plant space, has bean more uniform 
in this durra don in any of the milo varieties. In the very dry | 
spring of 1910, stands of one plant every 12.8 and 14.8. inches, ¢ 
respectively, were obtained from the two lots. In the wet spring of 
1915, when the milos germinated to rather poor stands, the one 
selection of White durra grown had a plant space of only 11.7 inches. 
- The most striking physiological difference between the White durra 
and the milos is in relation to tillering.. In some cases, as No. 27 
in 1910 and 1912, absolutely no suckers were produced. In 1915, the 
very wet year, No. 81 produced only 34 per cent of suckers in the 
total stalks. 
In height these selections exceed milo and White milo to a small 
extent. The average height is about 5 or 5.5 feet and the variation | 
was from 4 feet in 1912 to 7 feet in 1913. | } 
Tn yield these White durra selections fall below milo and feterita. 
The average acre yields of the two in the first six years, when both 
were grown, are 16.9 and 17.3 bushels, respectively, as shown in 
Table XIII. The average acre yield of No. 81 in the 9-year period 
was only 18.7 bushels.- In 1915, the year of bumper yields, its 
record was only 36.9 bushels, about 1 bushel more than it yielded in 
1908 and about 30 bushels less than that of the best milo. The 
yields of this selection are compared with those of other milos and 
durras in Table XVIII. 
BUFF DURRA. 
Under Buff durra are grouped, for convenience, several diverse 
varieties. None has been found to have any economic importance in 
the Panhandle. | 
Nos. 104 and 374 are the domestic Brown durra, which is the 
brown-seeded counterpart of White durra. No. 101 is a similar plant 
from North Africa. No. 183 is the Durra Safra or Yellow durra from 
Egypt, more truly a milo. No. 389 is a brown-seeded Dzhugara from 
Turkestan. Nos. 246, 249, and 250 are from India. Nos. 371, 372, 
and 376 are lots obtained from shiploads of chicken feed brought 
in ballast from Liverpool, England, but probably origimating in 
India. 
It is evident from the data in Table XTV that the performance of 
these varieties was so poor as to warrant discarding the entire lot at 
the end of 1913. No. 246, Dagdi Jowar, from India, seemed to be 
the most promising of all, but its average annual acre yield in the 
6-year period was only 14 bushels. Most of the varieties were both 
tall in stature and late in maturing. 
agit 
