PLOWS FOR DRY-FARMING 



305 



plow, characterized by a lofig sloping moldboard, is 

 the best known implement for breaking all kinds of 

 sod. (See Fig. 75 a.) Where the sod is very light, as 

 on the far western prairies, the more ordinary forms 

 of plows may be used. In still other sections, the 

 dry-farm land is covered with a scattered growth of 

 trees, frequently pinion pine and cedars, and in Ari- 

 zona and New Mexico the niesquite tree and cacti are 

 to be removed. Such clearing has to be done in ac- 

 cordance with the special needs of the locality. 



PI 



ounng 



Plowing, or the turning over of the soil to a dej^th 

 of from seven to ten inches for every crop, is a funda- 

 mental operation of dry-farming. The plow, there- 



FiG. 73. Parts of modern plow. 



fore, becomes one of the most important implements 

 on the dry-farm. Though the plow as an agricul- 

 tural implement is of great antiquity, it is only within 

 the last one hundred years that it has attained its 

 present perfection. It is a question even to-day, in 



