24 



BULLETIN 981, U. S. DEPARTMENT OF AGRICULTURE. 



growth to afford appreciable pasturage. These facts indicate a wider 

 utilization of Sudan grass as a catch crop in the future. 



Table II. — Comparative yields of Sudan grass, millet, and sorgo, seeded broadcast or 



in close drills. 



Location of test. 



Years of 

 test. 



Plats. 



Yields of cured haj 

 (tons). 



per acre 



Size 

 (acres). 



Replica- 

 tions. 



Sudan 

 grass. 



Millet. 



Sorgo. 



Southern Great Plains: 



1916 to 1919.. 

 1912 to 1916.. 



0.10to3.0 



lto4 

 2 

 2 



2.54 

 5.86 

 2.04 

 3.81 

 2.40 



1.23 



4.85 





6.35 



Chillieothe, Tex 



1913 to 1918.. 



1914 and 1915 

 1917 to 1919.. 



.05 



.94 

 3.33 



3 00 



Lubbock, Tex 



4 88 





.10 



lto2 



4.14 











3.33 



1.83 



4.64 





1912 to 1917. . 

 1917 to 1919.. 



1913 to 1917.. 

 1914, 1917 to 



1919. 

 1912 



.05 



.10 



.10 



.04 to. 10 



.05 

 .05 

 .05 



2 

 lto2 



1 

 lto2 



2 

 2 

 3 





Central Great Plains: 



1.65 

 1.66 

 1.33 

 1.70 



1.69 

 2.72 

 1.69 



1.44 

 .46 

 .93 



1.34 



2.23 

 2.18 



2.01 



2.70 



Dalhart, Tex 



2.08 





2.70 





3.77 





3.25 





1914 to 1919.. 



1915 to 1919.. 



3.66 





2.10 









1.78 



1.51 



2.89 





1914 to 1915.. 

 1917 to 1919.. 



1915 to 1916, 

 1918, 1919 



1915 to 1918.. 

 1915 to 1919.. 

 1915 to 1919.. 

 1915,1916.... 



.10 

 .05 

 .10 



.05 

 .04 

 .05 

 .05 



1 



3 

 3 



3 

 2 

 3 

 2 





Northern Great Plains: 



.82 



.67 



2.04 



1.40 

 3.34 

 1.40 



.74 



1.61 



.57 



2.04 



2.09 

 3.18 

 2.09 

 1.62 



1.41 





1.37 





3.05 



Newell, S. Dak 



2.33 



Redfleld, S. Dak 



4.15 





2.33 





1.05 







Average 



1.49 



1.89 



2.24 





1914,1915.... 









Timothy and clover region: 



4.02 

 3.60 

 2.79 

 2.21 

 3.08 



3.70 

 1.29 

 .73 

 2.64 

 5.00 

 1.69 



2.81 

 3.40 

 3.08 

 .77 

 2.31 



3.70 

 2.52 

 1.65 

 2.13 



3.99 





1915 to 1917.. 

 1916 



.05 

 .025 



2 

 2 

 2 

 2 



5.50 









1914 







1914, 1915, 



and 1917. 



1912 to 1918.. 



.02 







S.30 





1912,1913.... 

 1913 



.05 

 .012 



2 

 3 





Ithaca, N. Y 







1913,1915... 







1912 



.02 

 .02 



2 



8 



6.43 



Do 



1917 



2.85 













2.80 



2.52 



6.06 













The acreage of millet has been on the decline since 1899 (24, p. 5), 

 and except in the irrigated regions of the Southwest any increase in 

 the acreage of Sudan grass will mean a further decrease in the millet 

 acreage. On the other hand, there has been a steady growth in the 

 acreage of forage sorghums, which are likely to continue to be the 

 chief competitors of Sudan grass as emergency hay crops. 



USE IN ROTATIONS. 



Although Sudan grass is an annual and therefore can be introduced 

 easily into any rotation, its extensive use as a staple crop in regular 

 rotations is not to be expected. To fill such a position, the crop 



