66 BULLETIN 320, IT. S. DEPARTMENT OF AGRICULTURE. 
with a 2-horse 4-shovel or 6-shovel cultivator (fig. -±0), and this 
leaves the land about level. 
Xo cover crops are grown and no commercial fertilizers used. Cat- 
tle spend most of their time in the pastures, so little manure is saved. 
The yellow, white, and red varieties of dent corn are grown. 
The principal weeds of this section are cocklebur, Russian thistle, 
pigweed, bindweed, sand bur, and sunflower. 
