SPRING AND WINTER WHEAT 



107 



The following data show the total production in the United 

 States and five leading states for the three years 1919-1921 : 



Total yield, 



bushels 

 State 1919-1921 



Kansas 144,016,000 



North Dakota 72,093,000 



Nebraska 60,343,000 



Oklahoma 55,819,000 



Illinois 53,632,000 



Total five states 385,903,000 



United States 865,300,000 



Yield per acre, 



bushels 

 1919-1921 



13.8 

 8.1 

 15.2 

 14.2 

 16.1 



Average 



13 

 13.5 



WINTER WHEAT ACREAGE 

 1919 



947,342 

 924,553 

 911,43-1 

 839,804 

 817,418 

 684,442 

 663,864 

 620,389 

 538.070 

 2.539.021 



FIG. 41. Winter Wheat Acreage, (U. S. Department of Agriculture Yearbook, 1921). 



Spring and Winter Wheat. Of the above states one grows 

 spring wheat, North Dakota, while Nebraska, Oklahoma, Illinois, 

 and Kansas grow winter wheat. However, the division is not sharp, 

 as a small acreage of winter wheat is now grown in the northern 

 States, while some spring wheat, mostly durum, is grown in both 

 Kansas and Nebraska. In the United States winter wheat produc- 

 tion is still increasing, though spring wheat production apparently 

 reached maximum about ten years ago. 



