24 



BULLETIX 1244, U. S. DEPARTMENT OF AGRICULTURE. 



silage is more palatable and probably slightly superior in feeding 

 value to sunflowers and because tests have demonstrated clearly that 

 sunflowers are no more drought resistant than corn, there appears to 

 be little justification for growing sunflowers as a dry-land silage 

 crop over most of this region. (Fig. 9.) 



Table 11. — Yields of corn and sunflowers for silage at six stations in the northern 

 Great Plains region in stated years. 





Yields of green material per acre (pounds). 



station and crop. 



1914 



1915 



1916 



1917 



191S 



1919 



1920 



1921 



1922 



Aver- 

 age. 



Redfield, S. Dak.: 

 Corn 















23,315 



24,392 



6,170 

 3,595 



6,110 

 8,110 



18,824 

 28,745 



4,300 

 3,630 



5,844 



5,620 



21,069 

 2S,569 



Sunflowers 















Havre, Mont.: * 

 Corn 













2,670 

 7,385 



2,495 

 3,070 



7,449 

 8, 266 



8,6S0 

 9,075 



6,555 



14,825 



3,909 

 4,420 



6,468 



Sunflowers 













Moccasin, Mont.: 1 

 Corn 













Sunflowers 















7,332 



9,468 

 9,103 



5,995 



12,632 



Williston, N. Dak.:-: 

 Corn 













10, 255 

 9,130 



■2,259 



Siinflnwors , , 

















Hettinger, N.Dak.: 3 

 Corn 



8,638 



11,214 



6,433 



2,629 



4,760 



8% 

 2,280 



10,570 

 20,790 



Sheridan, Wyo.: 1 

 Sunflowers 

















1 Data from the records of the Office of Dry- Land Agriculture Investigations. 



2 Data from North Dakota Agricultural Experiment Station Bulletin 15S. 



3 Data from North Dakota Agricultural Experiment Station Bulletin 130 and the records of the Office of 

 Dry-Land Agriculture Investigations. 



In the mountain valleys of Montana, where the seasons are com- 

 paratively short and the nights cool, and in the northeastern part of 

 North Dakota, where rainfall is more abundant, the yields that can 

 be obtained from sunflowers may be enough greater to offset any dis- 

 advantages. 



a sunnowers at Havre, Mom., in L920, showing the effect of hot, dry weather. 

 Bunflowers will not produce profitable yields under conditions too dry for corn. 



In the southern parts of the region, especially in the drier sections, 

 certain sorghums, particularly Red Amber, ordinarily produce a 

 greater tonnage of silage than corn, and it is practically as good for 

 feeding purposes. 



