7 6 



THE POTATO 



onds between two and four ounces, and tubers less 

 than this weight, are hardly worth picking up. 



3. Ability to resist diseases. No varieties can be 

 termed "disease proof," but many varieties are better 

 disease-resisters than others. Stuart, of New Hamp- 

 shire, found that the variety Hulett's Rust Proof was 

 the only one that was disease-resistant out of several 

 varieties, although the varieties Dakota Red, Green 

 Mountain, New Queen, and Enormous showed some 

 resistance. Hulett's Rust Proof falls below the re- 

 quirements in other respects and is of little value, and 

 in Minnesota has been found to be subject to disease. 

 At Ontario Agricultural College, Carman No. 3 and 

 Stray Beauty resisted disease well. At Minnesota 

 Experiment Station, Rural New Yorker and Sir Wal- 

 ter Raleigh showed some resistance. 4 



4. The color of the skin and tuber. Many of the 

 colored-skinned varieties of potatoes, and those show- 

 ing a blush of pink as, the Beaut}'- of Hebron, Early 

 Rose, etc. belong to a type which have white blooms. 

 They are generally early maturing, rather liable to dis- 

 ease, and of good quality, according to the American 

 standard. The colored-skinned early varieties are gen- 

 erally more readily sold than the late ones, although 

 in some districts colored-skinned potatoes are not ob- 

 jected to on the market. All colored-skinned potatoes 

 are not deficient in vigor. Some are among the best 

 disease-resisting and best-flavored varieties, but the 

 red color of some weak varieties has rendered some 

 growers skeptical of all. 



1 Minn. Bui. 87, p. 2. i Minn. Bui. 87, p. jo. 



