DRY-FARMING 



are liable to be lost by leaching where the 

 land is bare of crop. This all goes to 

 show that the three factors of climate, 

 season, and soil must be constantly borne 

 in mind when dealing with the subject of 

 summer or winter rainfall. 



Tillage. 



The usual methods of tillage in the 

 Great Basin consist of deep plowing, 

 frequent cultivation, and alternate-year 

 cropping. Autimin-sown wheat has been 

 so far the chief crop grown on dry lands. 

 The land is then plowed as soon as pos- 

 sible, and left in the rough furrow all 

 winter. As soon as the winter rains have 

 thoroughly soaked into the ground, sur- 

 face cultivation is begun. This is usually 

 done by means of a disc-harrow. Some- 

 times a shallow summer plowing is given 

 to turn under any weeds. In the late 

 simimer a spike-toothed harrow is used 

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