EXPERIMENTS WITH DURUM WHEAT. 



33 



RESULTS AT HAYS, KANS. 



The Fort Hays Branch Experiment Station, as shown in Table II 

 (p. 15), is located on a silty clay loam soil at an altitude of 2,000 

 feet above sea level. During a 48-year period the normal annual rainfall 

 has been 23.2 inches. The experiments there have been conducted 

 cooperatively by the Kansas Agricultural Experiment Station and 

 the Office of Cereal Investigations. 



The data discussed in this paper are presented in Table XIII and 

 are seen in graphic form in figure 12. They cover a period of 14 

 years, 1903 to 1916, inclusive. 



Table XIII. — Annual and average yields of two varieties of durum wheat and one variety 

 of common wheat grown at the Fort Hays (Kans.) Branch Experiment Station during 

 periods of varying length in the fourteen years from 1903 to 1916, inclusive. 



[Data obtained in cooperation with the Kansas Agricultural Experiment Station.] 





C.I. 



No. 



Yield per acre (bushels). 



Class, group, and 

 variety. 



1903 



1904 



1905 



1906 



1907 



1908 



1909 



1910 



1911 



1912 



1913 



1914 



1915 



1916 



Average. 



5 



years, 



1912 



to 



1916. 



14 



years, 



1903 



to 



1916. 



Durum: 



Kubanka — 



2235-1 

 1440 



1437 





















12.2 



8.2 



17.7 



3.8 

 2.1 



15 6 



7.0 

 1.2 



?,? 6 



11.8 

 7.8 



6 3 



5.2 

 3.5 



37 



8.0 

 4.6 



19.8 





Kubanka 



Common: 



Crimean (winter) — 





 33.2 



1.7 



10 7 





 5 9 



2.2 

 5.2 4.3 



8.4 

 26.1 





 



18.1 



17 6 



0.1 



2.2 



3.8 

 14.6 



























The varieties tested throughout this period include only two, 

 viz, Kubanka of the durum class and Crimean of the hard red winter 

 group of common wheat. During this period the Crimean out- 

 yielded the Kubanka in the ratio of nearly 4 to 1, although the Crimean 

 yield is only 14.6 bushels per acre. Tests during the last five years 

 show that Marouani is better adapted than Kubanka. This part of 

 Kansas is strictly a winter-wheat district, and spring wheat can not 

 be profitably grown. 



RESULTS AT AKRON, COLO. 



The Akron Field Station of the Office of Dry-Land Agriculture, 

 at Akron, Colo., lies at an altitude of 4,560 feet on a sandy loam 

 soil. The average annual rainfall for the past 11 years was 19.7 

 inches. The experiments discussed herein were conducted by the 

 Office of Cereal Investigations in cooperation with the Office of Dry- 

 Land Agriculture of the Bureau of Plant Industry. 



The results of the experiments are presented in Table XIV, and 

 the principal data are shown in graphic form in figure 12. The 



