ME'ni()l« OF PLOWINC; 



)4i 



Discing sod land in tlie fall, when it is to be plowed immediately, 

 is of little service. At that time the disc will not cut deeply because 

 the ground is so dry. The freezing and thawing of winter and spring 

 have time to disintegrate the layers. Experience has shown that the 

 rougher such sod turns up, the greater will be this erosion because of 

 the lodgment of snow and the openness which admits the entrance 

 of rain. In plowing sod in a short rotation, where a large crop of le- 



SULKY PLOW. 



Used in plowing both sod and stubble. Being heavy and having 

 a rolling coulter in front, this plow will operate even where con- 

 siderable trash is on the ground. 



gumes or grass is on the surface, a "weed-hook" should be used in 

 order to drag everything into the furrow to insure complete covering. 

 This is essential for proper decomposition. 



Where sod is to be plowed in the spring, a thorough discing jusl 

 when the frost is out two or three inches, will tear up the surface 

 layer and allow the furrow slice to break over like stubble ground. 



When such a short time remains in which to rot the surface turf 

 and reconnect the capillary tubes, it is essential that the underside 

 of the surface slice not only lay closely to the bottom of the furrow, 

 but that such surface be of line structure. The disc also disturbs and 

 destroys many hibernating injurious insects. 



PLOWING THE GROUND. — The Objects of Plowing Are: To 

 alter the structure of the soil to a considerable depth, and to bury com- 

 pletely any vegetation or other organic matter on the surface of the 

 ground. It is essential that any legume, grass or stubble on the sur- 



