CEREALS ON THE BELLE FOURCHE EXPERIMENT FARM. 



43 



of the experiments, but only three varieties were grown all of the 

 seasons. Good yields of flax were obtained in 1912, 1915, and 1918, 

 fair yields in 1916 and 1917, and poor yields in 1913 and 1914, while 

 the crop was a complete failure in 1919. The yields depended chiefly 

 upon the seasonal precipitation. Very little injury from diseases 

 was observed. The yields are shown in Table XXX. 



It will be observed (Table XXX) that the Damont variety, C. I. 

 No. 3, gave the highest average yields during both the 6-year and 

 8-year periods. The next highest yields were obtained from the 

 Reserve variety, C. I. No. 19. This variety was formerly known as 

 Eussian and North Dakota No. 155. The wilt-resistant varieties. 

 North Dakota Eesistant Nos. 52 and 114, have not yielded as well as 

 the other varieties. None of the varieties has been reduced in yield 

 by wilt injury. The average yields of the flax varieties from 1914 

 to 1919, inclusive, are shown in figure 13. 



Table XXX. — Yields of flax varieties grown on dry land on the Belle Fourche 

 Experiment Farm, 1912 to 1919, inclusive. 





C.I. 



No. 







Yields per 



acre (bushels). 





Group and variety. 



1912 



1913 



1914 



1915 



1916 



1917 



1918 



1919 



Average. 





1912 

 to 

 1919. 



1914 

 to 

 1919. 



European seed: 



Select Russian (N. Dak. No. 

 608) 



1 

 2 

 3 

 4 

 6 

 17 

 19 

 8 



13 

 12 



7 

 30 



10.6 

 10.6 

 11.2 



8.2 

 



7.5 

 8.9 







3.3 



2.2 

















Select Riga (N. Dak. No. 1214) 

















Damont (N. Dak. No. 1215). . 

 Kazan (N. Dak. No. 1329). ... 



5.6 



.7 



23.6 



7.6 



7.2 



13.1 







8.6 



8.7 



Stepan (N. Dak. No. 1340).... 





















Frontier (N. Dak. No. 155) . . . 





















Reserve 



5.2 



4.5 



.8 

 2.4 



1.5 

 1.7 



2.4 



22.0 

 012.3 



16.7 

 17.8 



7.7 

 7.1 



5.8 

 6.2 



6.9 

 6.2 



6.3 

 6.9 



ii.6 



12.9 



10.1 

 12.4 





 





 



7.9 



'"7.'4' 



8.2 



N. Dak. Resistant No. 52 



Short fiber: 



N. Dak. Resistant No. 114 



6.8 

 6.7 



Primost (Minn. No. 25) 



Turkish: 



Turkish 



9.1 

 11.4 



4.8 

 2.8 



7.5 



Smyrna 



18.1 



2.9 































a Reseeded, first seeding failed to emerge. 



RATE-OF SEEDING EXPERIMENTS. 



Rate-of-seeding experiments with flax on dry land were conducted 

 in 1912 and again from 1915 to 1918, inclusive. The variety used was 

 " common " flax in 1912, Primost in 1915 and 1916, and Damont in 

 191T and 1918. Except in 1912, sowings were made at three rates, 

 viz, 15, 22.5, and 30 pounds per acre. The highest average yields 

 were obtained from the plats sown at the rate of 30 pounds per acre. 

 During the five years, 1912 and 1915 to 1918, inclusive, the 30-pound 

 rate gave an average yield of 0.8 bushel per acre more than the 15- 



