26 



Campbell's 1902 Soil Culture Manual. 



produced an average of 142 bushels to the acre, and this in a season when 

 almost all crops throughout the entire semi-arid belt were ruined by the 

 extreme drought. 



In cut No. 7, we give another illustration of potatoes grown under 

 other conditions. This ground was treated practically the same as that 

 shown in cut No. 6, but deep cultivation was applied, and less frequent. 



Cut No. 7. 



This field was cultivated three times, cutting fully four inches deep, which 

 resulted in destroying nearly all the main lateral roots, while the other 

 field was cultivated eight times, cutting about two inches. The differ- 

 ence in the result of the two crops was attributed directly to the treat- 

 ment of the ground after planting. 



The main point we wish to show here is that time and manner have 

 even more to do with the result of the crop than the kind of cultivation. 

 If you would secure the greatest possible benefit from the labor given 



