EXPERIMENTS WITH MARQUIS WHEAT. 



35 



The normal rainfall at these pomts is of Uttle importance, since 

 irrigation water is suppHed. One effect of the abmidant water 

 supply, however, is to lengthen the period required by the plant to 

 reach maturity. Hence, early varieties are desirable where the 

 elevation is sufficient to shorten the frost-free period. The altitude 

 at Newell, S. Dak., as shown in Table VIII, is 2,950 feet above sea 

 level. The altitude at Huntley, Mont., is 3,000 feet. The altitude 

 of Aberdeen, Idaho, shown in Table XX, is 4,400 feet, while Fallon, 



I 



MA/PQUA3 





\ i 



3o j 

 -SO \ 

 .o\ 



/ I D A H O \ 



M N T. 



<-. 



r 



.. •^^ 



V 



^B/-uks7-£r/^ J "^^^y^^S^^ 



V . 



UTAH 



Fig. 10. — Diagram showing tlie average yields of the Marquis and the leading variety in each of several 

 diSerent groups of wheat under irrigation at four western stations in either two or three of the years 1913 

 to 1915, inclusive. , 



Nev., has an altitude of 3,965 feet. The growing season is of only 

 medium length under these conditions. Sometimes it is much short- 

 ened by the occurrence of early autumn frosts. Early-maturing 

 varieties, therefore, are best adapted to the conditions obtaining at 

 these stations. 



RESULTS AT NEWELL, 8. DAK. 



The experiments with wheat under irrigation at Newell, S. Dak., 

 are conducted in cooperation with the Office of Western Irrigation 

 Agriculture. Marquis wheat has been included in the varietal experi- 

 ments during the 3-year period, 1913 to 1915, inclusive. The annual 



