ROLLERS AND CLOD CRUSHERS 



155 



rugated roller, or, as it is often called, the cultipacker (Fig. 96). 

 This machine crushes lumps, compacts the soil and at the same 

 time leaves a thin mulch in the form of a corrugated surface. 



FIG. 96. The corrugated roller or cultipacker. 



Whenever a smooth or drum roller is used, it should be followed 

 by a light spike-tooth harrow, with the spikes tilted, to form a 

 mulch to conserve the soil moisture. 



FIG. 97. Three other types of rollers. A, pipe or tee bar roller; B, smooth or drum roller; 

 C, crowfoot pulverizer (roller). 



Muck, peat, sand, sandy loams and many loose silt loam soils 

 are especially benefited by a cultipacker. When muck and peat 

 soils are made firm they warm up quicker than when left loose. 



The roller should never be used on the heavier soils when they 

 are wet, but rather when they are in good working condition. 



