64 



BULLETIN 698, U. S. DEPARTMEITT OP AGEICULTURE. 



Table XXIII. — Agronomic data for White Tcafir grown at the Amarillo Cereal Field 

 Station during the 8-year period from 1909 to 1916, inclusive. 



[In the statement of yields per acre the bushel is rated at 60 pounds.] 





Row 



space. 



Length of period. 





i 

 w 



P. 

 o 



s 



'S 

 M 



o 



1 



Seed in— 



Yields per 



acre. 



Year and C.I. 

 No. 



1 



3 



to 



.9 



> 



'3 



o 



bcbi 



O 

 6h 





1 



o 



-s 



Eh 



1 



i 

 & 



1909: 

 342 



Ins. 

 13.3 



Ins. 

 9.9 



Days. 

 80 



Days. 



Days. 



Per 

 cent. 

 25.5 



Per 



cent. 

 48.5 



Feet. 



Per 



cent. 



Per 



cent. 



Per 



cent. 



Lbs. 



Zbs. 



Bus. 



8.7 























1910: 

 342 



17.1 

 17.3 



9.0 

 9.0 



80 

 80 



45 

 45 



125 

 125 



47.3 

 47.9 



82.9 



70. 8 



3.6 

 3.6 



42.1 

 37.9 



18.9 

 16.6 



45.0 



43.8 



3,089 

 3,109 



1,301 



1,178 



10.1 



370 



8.8 







Average. 



17.2 



9.0 



80 



45 



125 



47.6 



79.4 



3.6 



40.0 



17.7 



44.4 



3,099 



1,239 



9.9 



1911: 

 342 



8.2 

 8.8 



5.8 

 5.5 



77 

 77 



47 



47 



124 

 124 



29.1 

 37.6 





5.3 

 5.3 



42.2 



44.5 



24.3 



25.7 



57.3 

 57.9 



6,474 

 5,519 



2,754 

 2,459 



26.3 



370 



23.7 







Average. 



8.5 



5.6 



77 



47 



124 



33.3 





5.3 



43.3 



25.0 



57.6 



5,996 



2,606 



25.0 



1912: 

 342 



9.7 

 9.1 



6.4 

 6.7 



74 



74 



42 

 42 



116 

 116 



33.6 



26.7 



86.0 

 90.2 



3.3 

 3.3 



51.0 

 62.1 



35.2 

 32.3 



69.0 

 52.0 



2,800 

 2,500 



1,430 

 1,553 



16.5 



370 



13.5 







• Average. 



9.4 



6.5 



74 



42 



116 



30.1 



88.1 



3.3 



56.5 



33.7 



60.5 



2,650 



1,492 



15.0 



1913: 

 342 



11.8 

 iO.5 



7.8 

 7.2 



65 

 65 



31 

 31 



96 

 96 



34.3 

 30.7 





2.5 

 2.5 















70 





























Average, 



11.1 



7.5 



65 



31 



96 



32.5 





2.5 



























1914: 

 342 



8.1 



8.0 



7.2 

 7.2 



68 

 68 



23 

 23 



91 

 91 



12.0 

 10.0 



74.4 

 74.4 



3.8 

 3.8 





24.7 

 24.1 





3,560 

 3,560 





14.7 



370 



14.3 







Average. 



8.0 



7.2 



68 



23 



91 



11.0 



74.4 



3.8 





24.4 





3,560 





14.5 



1915: 

 370 



10.2 

 14.3 



6.9 

 9.2 



77 

 118 



49 

 37 



126 

 155 



31.7 

 35.8 



97.8 

 48.8 



4.8 

 3.0 



42.5 



35.0 



82.4 



6,400 

 3,360 



2,720 



37.3 



1916: 

 370 



4.0 













The White kafir has much inherent earhness, as is shown by its 

 record in 1913 and 1914, dry years, when the duration of the total 

 growing period was 96 and 91 days, respectively. The much longer 

 duration in aU the other years, except 1916, was caused either by 

 slow ripening or the delayed maturing of heads which did not com- 

 pletely, emerge from the boot. In general, it is about 10 days earher 

 than Sunrise kafir and 13 to 15 days earher than Dawn kafir. 



The stands obtained have corresponded rather closely to those of 

 the Dawn kafir. They are better, therefore, than those of the Black- 

 hull kafir, but not as good as those of the Sunrise kafir. The final 

 stand, or stalk space, has been very uniform, but never exceedmgly 

 close. It has varied between 5.6 and 9.9 inches per stalk. The pro- 

 portion of suckers has varied from 11 per cent in 1914 to 47.6 per cent 

 in 1910. Only in that year, however, has the proportion appreci- 

 ably exceeded one sucker to every two main stalks. The height has 



