ACRE YIELD OF POTATOES 



403 



in Maine than in any other state, occupying more than 5 per 

 cent of the improved farm land. 



547. Acre Yield. The yield per acre obtained in the 

 different states varies greatly. With the exception of Maine, 

 the states which produce high yields grow only compara- 

 tively small acreages of potatoes. The average yield per 

 acre is higher in Maine than in any other state. In the 

 Rocky Mountain and Pacific states the yield is usually high, 



Table XIX. Average acreage, production, and farm value of 

 potatoes in the ten leading states and in the United States during 

 the five years from 1913 to 1917 inclusive. 



as the crop is grown under irrigation. Except California, 

 Colorado, and Washington, none of these states produces 

 potatoes in quantity. In most of the important potato 

 states, the yield is below 100 bushels to the acre. 



SOILS AND FERTILIZERS 

 548. Soils. Potatoes, hke many of the other farm crops, 

 are grown on almost all classes of soil. Medium hght loams 

 are best adapted to potato growing, and are hkely to give 

 the best quality of tubers, though some excellent potatoes 

 are produced on very heavy clay. The greater portion of 

 the crop is produced on the lighter types of soils. Sandy and 



