194 ESSAYS ON "WHEAT 



While looking through the Table, tlie reader should hear 

 in mind the relative contribution which each variety of 

 wheat makes to the total crop. This has already been 

 pointed out in a previous Section.*® The reader will re- 

 member that most of the wheat produced in the four chief 

 spring-wheat States consists of spring varieties of Common 

 Wheat, i. e., Marquis, Velvet Ohaff, Bluestem and Fife ; 

 that Durum wheat in 1917 formed 25 per cent, of the total 

 wheat crop in N'orth Dakota, 20 per cent, in South Da- 

 kota, 8 per cent, in Montana, and 3 per cent, in Minne- 

 sota; and that Winter wheat in 1917 formed 40 per cent, 

 of the total crop in Montana, but only 3 per cent, in Minne- 

 sota and South Dakota, and only 1 per cent, in E'orth 

 Dakota. 



The most important conclusion to be drawn from the 

 Table is that in each of the four great spring-wheat States, 

 Minnesota, E'orth Dakota, South Dakota, and Montana, 

 Marquis has outyielded every other spring variety of Corn- 

 man Wheat, i. e., Velvet Chaff, Bluestem, and Fife. Vel- 

 vet Chaff was outyielded by from 0.5 to 3.6, Bluestem by 

 0.8 to 5.5, and Fife by 1.0 to 5.3 bushels per acre. 



Marquis, on the average for all the years given in the 

 Table and throughout the whole spring-wheat region of 

 Minnesota, the two Dakotas, and Montana, has outyielded 

 Velvet Ohaff by 1.8, Fife by 2.Y, and Bluestem "by 3.3 

 bushels per acre. 



It is not without interest to observe how Marquis has 

 fared, on an average of three years, in each of the three 

 chief spring-wheat States taken individually. 



In Minnesota, Marquis has outyielded Velvet Chaff by 

 2, Fife by 2.9, and Bluestem by 3.9 bushels per acre. 



In North Dakota, Marquis has outyielded Velvet Chaff 



88 Section VII on The Introduction of Marquis into the United 

 States. 



