6 



CIRCULAR 328, U.S. DEPARTMENT OF AGRICULTURE 



adapted to the class of soils regionally referred to as "hard lands", 

 which produce heavy yields of wheat and other crops when the rain- 

 fall is sufficient. Buffalo grass also occurs on the heavy gumbo soils 



Abundant major component of 



NATIVE GRASSES 76,172 SQ Ml. 

 LESS ABUNDANT BUT IMPORTANT 



106,172 so mi. 



Sparse, except in overgrazed 

 pastures | 29692 sq.m i. 



Generally very sparse, approximate outer 

 limits '226,296 so mi. 



Total area 538, 269 so mi. 



Sandy soils containing little or no 

 buffalo grass 



Figure 4. 



-Regional distribution of buffalo grass, showing the sections in which the grass occurs in varying 

 degrees of abundance and the approximate area of each. 



of Nebraska and the Dakotas but is rarely present on the sand hills 

 of Nebraska and southwestern Kansas. It is seldom found growing 

 on land in which the subsoil is wet periodically below a depth of 3 



