SPRING AND WINTER WHEAT 



107 



The following data show the total production in the United 

 States and five leading states for the five years 1906-1910 : 



State 



Total yield, 

 bushels 



Kansas 73,273,000 



North Dakota 70,868,000 



Minnesota . 08,626,000 



Nebraska 45,936,000 



South Dakota 41,215,000 



Total 299,918,000 



United States 693,316,000 



Yield per acre, 

 bushels 

 13.4 

 10.6 

 13.9 

 18.4 

 12.8 



14.68 



The yield per acre is- not high in the wheat belt, but the acreage 

 is large. 



FIG. 41. Winter wheat production. (U. S. Department of Agriculture.) 



Spring and Winter Wheat. Of the above states three grow 

 spring wheat, Minnesota, North and South Dakota, while Nebraska 

 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. 



