CORN TILLAGE 



171 



lands. The use of the harrow several weeks after plowing, 

 and either just before planting corn or soon afterwards, 

 kills young weeds and grass and thus reduces the subse- 

 quent cost of tillage. The principal change needed in 

 the tillage of corn in the South is the more general use of 

 the weeder or harrow. Its use should be begun about the 



FIG. 85. A SPIKE-TOOTH HARROW. 



time of planting and be continued as long as possible. The 

 harrow may be used until the corn plants are 4 to 6 inches 

 high and the weeder (Fig. 86) until they are 8 to 12 inches 

 high. The broadcast tillage with these implements is 

 the cheapest method of cultivating young corn, since with 

 either a harrow or a weeder 10 to 12 acres of corn can be 

 cultivated in a day. This economical broadcast har- 

 rowing permits delay in beginning cultivation with other 

 implements. 



It is usually best to run the harrow or weeder diagonally 



