THE CULTIVATOR 145 



where roots abound. For a like reason it is useful in 

 many new lands. 



c. The disk harrow cuts the clods and the surface soil. 

 It is very effective in pulverizing the ground and in de- 

 stroying weeds. To prepare corn stubble land for oats, 

 the disk harrow is often used in place of the shallow 

 plowing that was discussed a little above. 



EXTENSION HARROW. 

 A labor-saving device for level fields. 



96. The cultivator is used for intertillage, or tillage between 

 the rows of such crops as grow in rows. It may be used 

 after planting, before the plants appear, if the rows are so 

 marked that they can be seen ; but its main use is between 

 the rows of standing crops. 



In small gardens a hand cultivator (pushed by hand) 

 has great advantages over the hoe; and it finds an impor- 

 tant place also in truck gardening on a large scale if land 

 is so valuable that it is desirable to plant in rows too near 

 together for the use of a horse. 



