172 



CORN CROPS 



Early sweet com is well adapted for this purpose and is 

 often sown in July after a small-grain crop has been har- 

 vested. 



CHECKING AND DBILLING 



119. When corn is to be surface planted it is usually 

 " checked," that is, planted in hills and rowed both ways, 

 thus permitting of cross cultivation. When corn is drilled 

 on the surface, it is often difficult to keep weeds out of the 



Fig. 48. — A two-row corn planter. Will drop in hills, rowing both ways, 

 or in drills. Commonly called a check-rower. 



row, as little soil can be thrown around the plants in 

 cultivating. This difficulty is overcome in a large measure 

 by using the furrow opener and placing the corn in a 

 shallow furrow. 



TIME OF PLANTING 



120. Many experiments have been made on the time 

 of planting, but the principal conclusion may be stated as 



