166 ESSAYS ON WHEAT 



flying colors in the baking tests ; but there is another fact 

 of importance to consider, namely, yield. Messrs. Ball 

 and Clark have come to the conclusion that while in the 

 great central spring-wheat States Marquis out-yields the 

 other Common spring-wheats, yet west of the Eoeky Moun- 

 tains, at various stations, Marquis is out-yielded by the 

 standard varieties of soft white spring wheats and by sev- 

 eral other varieties newly introduced. ^^ Marquis must 

 therefore be considered as still on trial in the Pacific 

 Northwest, and a few more years must pass before its 

 exact position in respect to other wheats has there become 

 a settled one. 



In Montana, Marquis formed 45 per cent, of the wheat 

 crop in 1917, as against 40 per cent, for winter wheat 

 and 8 per cent, for Durum. Marquis out-yielded Durum, 

 but was itself out-yielded by winter wheat to the extent 

 of 3.2 bushels per acre.^® However, winter wheat in 

 Montana is not a uniform success; for, in the principal 

 spring-wheat sections of this State, early in the spring 

 of 1916, a thaw followed by a frost killed most of the fall- 

 sown Turkey wheat. In consequence of this, a large part 

 of the Turkey-wheat acreage was reseeded to Marquis, 

 which thus made a proportionate gain over its competi- 

 tors.«« 



In order to realize the beitter with what speed Marquis 

 has increased its cultivation in the four chief spring-wheat 

 States, and to perceive the effect which Marquis has had 

 upon other kinds of wheat in the vast struggle for varietal 

 predominance upon the western plains, we shall now turn 

 our attention to certain data recently published by the 



28 C. E. Ball and J. Allen Clark, Experiments with Marquis wheat. 

 Bulletin No. 400, Bureau of Plant Industry, U. S. Department of 

 Agriculture, October, 1916, pp. 27, 35, 40, etc. 



2» For these data, see the table which follows. 



30 0. H. Bailey, loc. oit., p. 158. 



