GKAIN-SOKGHUM EXPERIMENTS IN THE PANHANDLE OF TEXAS. 



51 



Table XVII. — Annual and average acre yields of the best durra-kajir 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 bushel is rated at 58 pounds.] 





Annual yields (bushels). 



Average yields. 



Selection and 

 C. I. No. 



1908 



1909 



1910 



1911 



1912 



1913 



1914 



1915 



1916 



5 



years, 



1909 



to 



1913. 



6 



years, 



1908 



to 



1913. 



9 years, 

 1908 to 1916. 



Black glumed: 



198-1-1 





1.2 

 2.8 

 6.7 

 3.1 

 3.2 

 7.8 

 3.5 



2.8 

 3.2 

 7.8 

 3.5 

 4.1 

 4.2 

 4.2 



7.4 

 9.1 

 7.9 

 8.1 

 7.1 

 5.4 

 5.6 



21.2 

 18.8 

 16.0 

 17.0 

 12.7 

 17.0 

 17.0 



37.3 

 30.2 

 38.2 

 34.6 

 26.7 

 39.9 

 17.3 



28.2 

 41.2 

 34.1 

 26.3 

 16.4 

 46.1 

 30.3 



2.7 

 3.0 

 4.0 

 2.0 

 2.2 

 4.1 

 3.9 



6.0 

 4.6 



11.6 

 9.5 

 3.3 

 5.0 



11.5 





 

 

 

 

 

 





 

 

 

 

 

 









Bus. 

 9.7 

 9.0 



11.4 

 9.6 

 7.8 



11.4 

 6.1 



11.6 

 13.6 

 13.9 

 11.3 

 7.3 

 14.5 

 12.6 



Bus. 



Bus. 



Cwt. 



198-7-3 



41.0 

 34.5 

 34.5 

 34.5 

 27.4 



16.2 



34.5 



7.2 



14.4 

 15.2 

 13.7 

 12.3 

 14.1 



16.0 



9.3 



198-11 





198-12 













198-12-4 













198-15-3 



20.7 



24.5 



2.4 



14.7 



8.5 



198-19 





White glumed: 



198-7-3 



41.0 

 34.5 

 27.4 



13.8 



28.1 



5.7 



16.5 

 17.1 

 16.2 



16.3 



9.5 



X98-12-4 





198_15-3 



14.8 



17.9 



1.7 



14.6 



8.5 



198-19-3 





237 



24.0 

 35.7 

 35.7 









10.1 

 18.0 

 16.5 







240 



8.6 

 19.3 



29.3 

 36.2 



3.5 

 3.5 



16.6 

 17.5 



9.6 



240-6 



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 

 greatly, 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 1.5.6 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 



