38 



BULLETIN 400, U. S. DEPARTMENT OF AGEICULTTJEE. 



of A. R. Merritt. The results obtained are shown in Table XXIX. 

 The average yield of the best variety in each group is shown graphi- 

 cally in figure 10. Tlie two farms used for these experiments are 

 about 20 miles apart. Tlie results obtained in the two different 

 years are not directly comparable. Since they agree fairly weU, 

 however, they have been averaged in Table XXIX and in figure 10. 

 Only spring common wheats have been compared with the Marquis 

 in Nevada. Table XXIX shows that the Palouse Bluestem, Dicklow, 

 and Little Club aU outyield the Marquis by large margins. The 

 overyields amount to 22, 28, and 33 per cent, respectively. 



Table XXIX. — Annual and average yields of the Marquis and three other wheats grown 

 under irrigation on the Truckee- Carson Reclamation Project near Fallon, Nev., during 

 1914 {farm of L. W. Langford) and 1915 {farm of A. R. Merritt). 



[Data obtained in cooperation witli the Office of Western Irrigation Agriculture.] 



Group and variety. 



C.I. 

 No. 



Yield per acre 

 (bushels). 



Group and variety. 



C. L 

 No. 



Yield per acre 

 (bushels). 



1914 



1915 



Aver- 

 age. 



1914 



1915 



Aver- 

 age. 



Fife: 



3641 

 4066 



IS. 3 

 31.8 



39.4 

 45.2 



28.9 

 38.5 



White Australian: 



Dicklow 



Palouse Bluestem . . . 



3663 

 4067 



30.7 

 30.1 



43.2 

 40.5 



37.0 



Little Club: 



Little Club 



35.3 







CONCLUSIONS. 



In Idaho and Nevada the soft white spring wheats, Dicklow, 

 Defiance, Palouse Bluestem, and Little Club, aU have outyielded 

 the Marquis under irrigation. The Marquis wheat is not a profitable 

 variety to grow under irrigation west of the Rocky Mountains. 



In western South Dakota and in Montana the Marquis has given 

 good results in comparison with other varieties of spring common 

 wheat. The few data available indicate that it does not yield as 

 well as the Kubanka durum and the Kharkof winter wheat. 



SUMMARY OF YIELD DATA. 



For convenience of comparison a summary of the average yields 

 is presented in Table XXX. This summary contains the average 

 yield of the most productive variety in each group at each station 

 where it was grown. In all, 23 stations are represented. There are 

 25 different sets of experiments, however, as the varieties were grown 

 under both nonirrigated and irrigated conditions at two stations. 

 The Marquis and representatives of eight other groups are included. 



The average yields of the same varieties at the same stations are 

 also expressed in Table XXX in percentages of the yields of the 

 Marquis variety. Arranging the data in this form makes compari- 

 son still more easy. 



