EXPERIMENT STATION BULLETINS. 



341 



the Upper Peninsula. This variety is very susceptible to Mosaic and leaf- 

 hopper injury and is grown successfully only under the most favorable cli- 

 matic conditions. It is used extensively by southern growers for early 

 plant" ng. 



Fig. 4. The Bliss Triumph is an early pink -skinned potato. 



The vines are rather erect and not much branched. The foliage and 

 stems are dark green. The color of the flowers is rose-lilac. The tubers 

 are small or medium size, round with rather blunt ends that usually are 

 slightly shouldered. The eyes are slightly depressed and medium in 

 number. The skin is a light red color. 



The Late Petoskey, also called Russet Rural and Petoskey Golden Russet, 

 is the standard variety of late potato for Michigan. Over 90 per cent of the 

 3,250 cars of potatoes shipped in 1921 by the Michigan Potato Growers' 

 Exchange were of this variety. Of the certified seed potatoes offered for 

 sale in 1921 by Michigan growers approximately 74,000 bushels were Late 

 Petoskeys, compared with 5,000 bushels Green Mountain, 2,300 bushels 

 White Rurals, amd 300 bushels of Irish Cobblers. 



The Late Petoskey seems to withstand hot, dry weather conditions better 

 than do most other varieties. It is also somewhat more resistant to leaf- 

 hopper injury than other varieties that have a more delicate leaf tissue. 

 About the only criticism against this variety is that on the heavier types of 

 soil its skin is likely to be dark colored. On the sandy loam types of soil, 



