200 



cohn crops 



many types of shovels and improvements for ease in con- 

 trolling as illustrated in Figs. 63-66. 



Modern cultivators may be fitted with four to eight 

 shovels, the size of the shovels decreasing as the number in- 



FiG. 67. 



- Twu-row corn cuIti\'ator for three horses. 



creases. The six or eight shovel type is usually preferred 

 where the ground is in good tilth and the weeds small. 



Where the ground is hard and the ■\^■eeds large, so that 

 the land must be plowed rather than cultivated, the 

 large four shoveled type is more effective. On stony 

 land the spring tooth gang is often preferred. Also 

 most standard riding cultivators may he fitted with disk 

 gangs. Disk cultivators do excellent work in the hands 

 of a skilled operator. Thej- are especially desirable when 



