GRAIN-SORGHUM EXPERIMENTS IN THE PANHANDLE OF TEXAS. 51 
Taste XVII.—Annual and average acre yields of the best durra-kafir hybrids grown at 
the Amarillo Cereal Field Station during periods of varying length in the nine years 
from 1908 to 1916, inclusive. 
[In the statement of yields per acre the bushelis rated at 58 pounds. ] 
Annual yields (bushels). Average yields. 
Selection and 5 6 
0. years,/years,| 9 Vears 
1908 | 1909 | 19101911 | 1912 | 1913 | 1914 | 1915 | 1916 | 1909 | 1908 19084 y 
to £6 o 1916. 
1913. | 1913. 
Black glumed: Bus.| Bus.| Bus. | Cwt 
TI So le Se a et UW CoG Bile@ |) PEC Q) | iesea el Mei aenel ede Dende |i ees ca la er ashes | ae 
Gea Scocccaanse ANSO) |); Pots  Da ab eb [40 0 | 16.2 | 34.5 7.2) 9.0] 14.4 | 16.0 ke 
1OS= Tlie So aslo isees 34.5] 6.7 7.9 | 38.2] 4.0 (| ese evel epee) i Sore (a1 552 5 | esas |e 
N98=12 0c cine Seek S: SAT one os Ll Saleo4anO 4 1250 (Up seca s|tesamres eres beset BEG WeSC AlesShallsgasoc 
198-12-4.......-.. 34.5 | 3.2 Coll \\ 2B. PRE A) |e ee [atonal ee sR Hoe) MAS les se ccllocesac 
NOS=T5=Bito ccs 55. 27.4 7.8) 5.4) 39.9] 4.1 ONR20575)) 2425.) 224 a 142 47, 8.5 
OSH LOS ae Sac so et | eis seymcc SHON Os Onli eroilen oo CO): 1S eee (eee | ee Rojee Bel eee BUS Sate les 
White glumed: : 
IWeA(ERs Goaoceece 41.0 | 2.8] 21.2} 28.2] 6.0 0 | 13.8 | 28.1 Oo | LAG 16554 Ged 9.5 
198-12-4......... BARONS eee OM en ale2n 456 (D) AVES erate Meese ge kes IBSO (palo NosoSonlloctec 
198-15-3....-...- 27.4| 7.8] 16.0 | 34.1] 11.6 0 | 14.8 | 17.9 Lal WSs On| LOS 2s a6 8.5 
19S 19-8 eae ee yes 3.5] 17.0 | 26.3} 9.5 (0) 4 eRe al (Eee eal tee AB Gomer aca Soles sane 
BY eh Serta eee 24.0) 4.1] 12.7) 16.4] 3.3 OF Seco ales | Soosep Hess Ms sce stlleccsse 
BHD) a 8 eke ea ee conan 35.7 | 4.2] 17.0} 46.1 5.0 0 8.6 | 29.3 3.5 | 14.5 | 18.0 | 16.6 9.6 
DADO erstey be sens SS I Co, ae aes) | es 0 | 19.3 | 36.2 3.9 |-12.6 | 16.5 | 17.5 10.2 
The average yields of the two white-glumed selections, Nos. 198—7-3 
and 198-15-3, during the 9-year period are 16.3 and 14.6 bushels, 
respectively. If the yields recorded for these two in 1908 and 1909 
are taken as the yields of the two black-glumed selections in the 
same years, their average yields are 16.0 and 14.7 bushels, respectively. 
Although the annual yields of the members of these two pairs varied 
ereatly, the 9-year average yields of the two selections bearing the 
same numbers but having different glume colors are seen to be 
practically identical. The 9-year average yield of selection No. 240 
is 16.6 bushels per acre, almost exactly that of the selection No. 
198—7-3, both black glumed and white glumed. 
The 6-year average acre yield of selection No. 240-6 in the years 
1911 to 1916, inclusive, was 16.8 bushels, while the average yield of No. 
240 itself was only 15.6 bushels in the same six years. All these 
average yields are much lower than those of Dwarf milo, milo, White 
milo, or feterita, and somewhat lower than those of White durra, the 
average yield of which was 18.7 bushels per acre in the same period. 
The yields of the durra-kafir hybrids are very irregular, although their 
variations correspond in general with those in the yields of other 
groups. In 1911 the yield of the black-glumed No. 198-15-3 equaled 
that of the best milo, while No. 240 surpassed it by some 7 bushels. 
In 1914, an unfavorable year, four of the six surpassed the best milo 
in yield, but in 1915, a year of abundant rainfall, the best of these 
fell 31 bushels behind the best milo. 
The relatively low average yields of these hybrids are due in part 
. to their comparatively poor yields in 1915, when bumper yields were | 
