10 



BULLETIN 291, U. S. DEPARTMENT OF AGRICULTURE. 



Allowing a germination of 75 per cent, ordinary seed will produce about 

 one plant per linear foot of row when seeded at the rate of 1 pound 

 per acre in rows 3^- feet apart. This dwarf form of sorgo, Dakota 

 Amber, may be planted somewhat thicker than the larger kinds, so 

 that 5 or more pounds per acre are recommended. 



It is necessary to have sorgo nearly mature at the time of harvest, 

 in order that the crop may have the highest possible food value. 

 The protein and fats are present in relatively large quantity in the 

 earlier growth of the plant, while the carbohydrates develop most 

 rapidly in the later stages of growth. For this reason it is desirable 

 to have a variety which will approach maturity in the region where 

 it is grown, in order to secure the maximum food value of the crop. 



Table V. — Comparative yields of air-dry forage of sorgo, corn, and Sudan grass at 

 Akron, Colo., Mandan, N. Dale, Newell, S. Dal;., and Ardmore, S. Dak., from 1911 

 to 1914- 



[The actual yield is stated as pounds per acre; the relative yield is the ratio to that of Dakota Amber, 

 which is taken as 100 in each case.] 





Akron, Colo. 



Mandan, N. Dak. 



Crop, variety, and strain. 



19111 



1912 2 



1914 3 



1914 3 





Actual. 



Rela- 

 tive. 



Actual. 



Rela- 

 tive. 



Actual. 



Rela- 

 tive. 



Actual. 



Rela- 

 tive. 



Sorgo, Dakota Amber: 



A. D.I. No. 341-10-4 



Sorgo, Minnesota Amber: 

 A D I No 341-2 ... 



5,155 



4,600 

 4,4C0 

 5,503 

 7,300 



100 



89 

 86 

 107 

 142 



7,480 



8,780 

 6,540 

 7,850 

 9,9S0 



100 



117 

 S7 

 105 

 133 



5,530 



6,8S0 

 5,860 



100 



126 

 106 



7,570 



100 



A D I No 341-13 







A D I No 341-5-1... 









7,320 



132 



11, 720 

 4,210 

 3,215 



157 





56 













3,840 



69 



42 

















Newell, S. Dak. 



Ardmore, S. Dak. 



Crop, variety, and strain. 



1913 * 



1914 = 



1913 6 



1914 2 





Actual. 



Rela- 

 tive. 



Actual. 



Rela- 

 tive. 



Actual. 



Rela- 

 tive. 



Actual. 



Rela- 

 tive. 



Sorgo, Dakota Amber: 



A. D. I. No. 341-10-4 



Sorgo, Minnesota Amber: 



A. D. I. No. 341-2 



A. D. I. No. 341-13 



2,150 



2,770 

 2,200 



:;,iim) 

 1,500 

 1,600 



100 



129 

 102 

 143 

 70 



74 



3,400 



4,040 



100 

 119 



820 

 700 



100 

 85 



1,670 

 1,660 



100 

 99 



A D I. No. 341-5-1 

















3,420 

 2,5:0 

 1,570 



101 



75 

 46 



600 



73 



2,600 



1,010 



890 



156 





60 







53 













1 The average yield of duplicate plats except in the case of Red Amber Sorgo, of which only 1 plat was 

 grown. 



2 The average yield of duplicate plats. 



3 The average yield of triplicate plats. 



4 The yields of Dakota Amber sorgo, Red Amber sorgo, and com were secured from single plats; the 

 yields of the three selections of Minnesota Amber sorgo from duplicato plats. 

 * The yields secured from single plats of each variety. 



