20 



THE POTATO 

 TABLE I 



The figures taken colle(5lively show the importance 

 of sele(fting a soil suitable for the crop to be grown, 

 the yield being doubled on Plat 2, while taken indi- 

 vidually it is evident that certain varieties were better 

 adapted to the environment than others. The ques- 

 tion of which variety will best suit the environment 

 must be determined by the grower. 



Subsoiling. — Buffum', of Wyoming, states that sub- 

 soiling may be recommended throughout that State for 

 potatoes. The cost of subsoiling to a depth of 1 6 inches 

 to 18 inches varied between $3.00 and $6.00 per acre. 

 Hays^ of Minnesota, found it to be expensive and not 

 profitable under most conditions in that State, and that 

 it reduced the yields of crops on land already suffi- 

 ciently open and porous. In humid climates, if at- 

 tempted, it is advocated that subsoiling be done in the 

 fall, to permit the readjustment of the soil granules 

 before springtime, so that the moisture will be able to 

 rise upward from the subsoil, as evaporation takes 



' Wyo. Bui. 41, pp. 20. 21; Bui. 32, pp. 7, 8. 



' Minn. Bui. 6S. p. 609. 



