190 



CAMPBELL'S SOIL CULTURE MANUAL 



evaporation is much less. The rich prairie soils of the 

 Dakotas, Minnesota and other sections of the northwest 

 should produce thirty to fifty bushels of spring wheat 



EASTERN COLORADO WHEAT 



Crop of Forty-eight Bushels per Acre in Eastern Colorado in 1906 

 Without Irrigation. 



instead of five to twenty, and will if the soil is properly 

 handled. A thirty bushel crop should be got any year. 



