46 THE POTATO 



potato seed stock pure or true to variety name. 

 Some, if they run out of a variety, will substitute 

 the one nearest like it which they have on hand. 

 The result of these pernicious practice/ is an end- 

 less confusion of varieties, which may require 

 years of study and observation to unravel. To 

 the farmer it means that he is never sure of the 

 variety he is getting, unless he knows the general 

 reliability of the firm from which he buys, and 

 that it has a man in charge of its potato depart- 

 ment who knows varieties." 



COLORADO 



The following is from " Farmer's Bulletin 386" 

 of the U. S. Department of Agriculture, by the 

 senior author: 



" Years of experience have demonstrated that 

 comparatively few varieties of potatoes are really 

 adapted to Western or mountain conditions. 

 Among the early varieties none has been so univer- 

 sally successful as the Early Ohio. This potato is 

 of fine quality and uniform in size and shape, 

 though not a heavy yielder. Another good potato, 

 though not so early, is the Rose Seedling. 



"For a medium to late variety, the Dalmeny 

 Challenge, a Scotch variety, is being used quite 

 extensively on the western slope of Colorado. 

 For later varieties, the White Pearl, and Rural 

 New Yorker No. 2 are more extensively used at 

 Greeley, in the San Luis Valley, and in the Un- 

 compahgre Valley; and the Perfect Peachblow is 

 the favorite in the upper Grand Valley. The lat- 

 ter variety has been grown continuously by the 

 writer for twenty -five years, and under the system 



