SELECTING IMPLEMENTS FOR SOIL MANAGEMENT 429 



The type of plow desirable for orchard use is one of a two- 

 bottom design with ample clearance and penetration. Disk 

 plows are satisfactory on many soil types. 



In many orchards, on the lighter types of soils, no plowing 

 is done but a disk harrow is used. Such harrows should be 

 strongly built, heavy, and durable. Orchard disks 14 to 16 

 feet in width are especially desirable, since the sides of the 



(Caterpillar Tractor Co,) 

 Fig. 168. Clean cultivation in an Ohio orchard. 



harrow will extend under the branches and the soil will be 

 cultivated, although the tractor need not be driven close enough 

 to do any damage to the trees (Figs. 167 and 168) . For this 

 reason it is usually better not to have the tandem hook up, 

 or one disk ahead of the other, for orchard work, but rather a 

 wider implement in one plane of action. 



In some orchard sections nothing but plows and disks are 

 used, but in most sections the spring-tooth harrow is a part 

 of the orchard equipment. These harrows, as well as the light- 



