WHEAT SOILS 



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per cent, of sand, 50 per cent, of silt, and from 20 to 

 30 per cent, of clay. Soils of this class when well 

 stocked with moisture in the spring are capable of 

 producing good crops of wheat, but are not able to 

 withstand drought so well as soils of the first class ; 

 during wet seasons, however, they produce larger 

 yields than heavier clay soils. 



1834 



Fig. 10. Soil types. 



i. Heavy wheat soil. 2. Average wheat soil. 3. Medium wheat 

 and grain soil. 4. Corn soil. 



To the third class of wheat soils (3 in Fig. 10) be- 

 long those which are composed mainly of silt, contain- 

 ing usually 75 per cent., and from 10 to 15 per cent, of 

 clay. The high per cent, of fine silt gives the soil 

 clay-like properties. Soils of this class are adapted to 

 a great variety of crops. For the production of wheat 



