34 



BULLETIN 430, U. S. DEPARTMENT OP AGEICULTURE. 



acre. The Select Russian (C. I. No. 3) gave tiie highest yield, 7.4 

 bushels. 



Table XXIV. — Annual and average yields of 16 varieties and strains of flax grown on 

 the Cheyenne ExperiTnent Farm in 1913, 1914, and 1915. 



Variety. 



Montana Common , 



Select Russian (N. Dak. No. 1215). 

 Fargo Common (N. Dak. No. 1133) 



Russian (N. Dak. No. 155) , 



Russian (N. Dak. No. 155) , 



North Dakota Resistant No. 52 



Russian (N. Dak. No. 1340) , 



Wyoming Common 



Select Riga (N. Dak. No. 1214) 



North Dakota No. 1221 , 



Russian (N. Dak. No. 1329) 



Select Russian 



Blue Blossom 



Primost (Minn. No. 25) , 



Idaho Common 



North Dakota Resistant No. 114... 



C. 1. 

 No. 



Yield per acre (bushels). 



1913 



7.0 

 7.4 

 6.3 

 5.5 

 6.0 

 6.3 

 7.0 

 o5.0 

 6.4 

 5.4 

 6.3 

 6.3 

 4.6 

 4.3 



1914 



5.6 



6.2 



6.6 

 4.5 

 5.9 

 6.7 

 4.5 

 6 4.9 

 5.0 

 5.5 

 5.7 

 4.9 

 5,5 

 5.9 

 4.4 

 3.8 



1915 



17.6 

 17.2 

 17.5 

 18.0 

 16.3 

 12.8 

 14.0 

 15.3 

 13.3 

 13.5 

 12.0 

 12.5 

 11.5 

 10.8 

 18.5 

 12.5 



Average. 



1913 to 1914 and 

 1915. 1915. 



10.1 

 9.9 

 9.8 

 9.3 

 9.1 

 8.6 

 8.5 

 8.4 

 8.2 

 8.1 

 8.0 

 7.9 

 7.2 

 7.0 



11.6 

 11.2 

 11.6 

 11.3 

 11.1 

 9.8 

 9.3 

 10.1 

 9.2 

 9.5 

 8.9 

 8.7 

 8.5 

 8.4 

 11.4 

 8.1 



o Average of 5 tenth-acre check plats. 



& Average of 7 tenth-acre check plats. 



In 1914 the flax varieties were sown in tenth-acre plats on spring- 

 plowed fallow land at the rate of 15 pounds per acre. Good stands 

 were obtained. The precipitation in June and July was below 

 normal and was poorly distributed. However, fair yields of flax 

 were obtained. The yields ranged from 3.8 to 6.7 bushels per acre. 



In 1915, 16 flax varieties were sown in duplicate twentieth-acre 

 plats on double-disked corn ground at the rate. of 15 pounds per acre. 

 Good stands were obtained. The spring and summer rainfall was 

 above normal. The growing season was considerably prolonged by 

 the cool, wet weather. The growth was good and excellent yields 

 were obtained, ranging from 10.8 to 18.5 bushels per acre. The 3-year 

 average yield of 14 flax varieties ranges from 7 to 10.1 bushels per 

 acre. » 



The four leading varieties and their average yields are: Montana 

 Common (C. I. No. 6), 10.1 bushels; Select Russian (N. Dak. No. 

 1215, C. I. No. 3), 9.9 bushels; Fargo Common (N. Dak. No. 1133, 

 C. I. No. 18), 9.8 bushels; and Russian (N. Dak. No. 155, C. I. No. 19), 

 9.3 bushels per acre. 



Flax is a promising crop for eastern Wyoming, as shown by the 

 results in the past three years. Flax growing need not be confined to 

 newly broken land, as good results can also be obtained on old land 

 if the seed bed is well prepared and kept free from weeds. Flax 

 should not be grown continuously on the same land but in rotation 

 with other crops, preferably after a clean-cultivated row crop. It is 

 imperative that flax be grown in rotation with other crops, in order 

 that loss from flax diseases may be reduced to the minimum. 



