18 



BULLETIN 1045, U. S. DEPARTMENT OF AGRICULTURE. 



Table l.^-CompatHson of the yields per acre of sunflower, com, and sorgo silage. 



[Yields obtained under irrigation are given in italic figures; those not in italic were 

 obtained witliout irrigation.] 





Year. 



Yields per acre 



tons). 



Locality. 



Sun- 

 flowers. 



Com. 



Sorgo 

 (cane). 



Pullman, Wash 



1919 and 1920 



1918 



1917 



all. 6 



28.4 



1.6 



22.5 



7.0 



23.1 



19.9 



13.0 



36.8 



31.1 



a 33.6 



3.3 



19.4 



32.9 



27.8 



12.0 



20.0 



4.3 



10.5 



3.0 



8.3 



12.6 



12.8 



15.2 



a 16. 3 



10.0 



18.3 



25.0 



15.5 



18.0 



18.0 



24.4 



17.1 



20.3 



39.0 



a6.0 

 10.8 





Umatilla, Oreg 











Wallowa County, Oreg 



1920 



1 



Do 



1920 



1 





1917 



14.2 

 13.0 

 10.0 





Do 



1918 







1919 







1915 





Do 



1916 



1 



Do 



1917 and 1918 



1920 





Havre, Mont . 



2.6 



10.5 

 9.3 

 10.4 







1917 



1918 



1919 



1919 



1919 



1920 





Do 





Do. 









State College, N. Mex .... . . ... 



15.0 

 3.9 

 6.1 

 2.0 

 4.0 

 blO.4 

 8.2 



10.4 

 a 14.6 



10.0 



20.0 









1918 



1919 



1920 



1917 



1918 



1920 



1917 to 1919 



1919 



1918 



1919 



1919 



1919 



1919 



1895 



(d) 



(0 

 1919 





Do. . 





Do 





Newell, S. Dak. . . 





Do 



cll.3 



Redfield, S. Dak 



15.5 



Scottsblufl, Nebr 





St. Paul, Minn 







15.6 









11.0 



8.5 

 7.5 



















15.8 

 16.9 

 14.0 



16.7 





17.2 











a The yield given is the average for the years specified. 



fc The corn yields listed are those of the Payne White Dent, the highest jaeldiiig variety which matured 

 sufficiently to make good silage. Red Cob com , a southern variety, made an average yield of 13.15 tons per 

 acre for the two years, but was so immature when harvested that the silage was of verj' poor quality. 



c The Red Arnber sorgo was too immature when harvested to make good silage. 



d Average yields of Mammoth Russian sunflower and White Cap Yellow Dent corn each for 13 years 

 and Minnesota Amber sorgo 15 years. 



« Average yields of Black Giant sunflower and AVisconsin No. 7 corn each for 13 years and Orange 

 sorgo 15 years. 



There are other tests of these crops mentioned in agricultural litera- 

 ture, but no definite yields are given. In the Quarterh^ Bulletin of 

 the Michigan Agricultural College for May, 1920, it states that in 

 1919 careful estimates of the yields on eight farms in Ogemaw, Grand 

 Traverse, Otsego, and Emmet Counties showed that " on an average 

 sunflowers yielded 20 per cent greater tonnage per acre than the corn 

 grown in the same fields. On the college farm at East Lansing, a 

 3-acre strip of sunflowers produced a 30 per cent greater tonnage than 

 an equal area of corn adjacent." C. B. Tillson, county agricultural 

 agent of Clinton County, N. Y.. writing in the Rural New Yorker, 

 February 21, 1920, says that there were 30 tests of sunflowers in Clin- 

 ton County in 1919 and that in many instances the sunflowers out- 

 yielded corn from 30 to 35 per cent. He adds that the sunflowers out- 



