16 



BULLETIN 39, U. S. DEPARTMENT OF AGRICULTURE. 



(S. Dak. No. 196, C. I. No. 3083). Figure 4 shows a number of 

 typical heads of bluestem wheat; these are selections from the 

 Haynes Bluestem (Minn. No. 51) made at the Highmore substation 

 in 1910. The milling qualities of the bluestem wheats are so well 

 recognized by the trade that it is taken as the standard by which 

 other varieties are rated in milling value. 



Haynes Bluestem. — The strain of the Haynes Bluestem wheat 

 known as Minnesota No. 169 (S. Dak. No. 169, C. I. No. 2874) was 



* If III 



* * I ■■! I f i 



U.U,/:A.,U 





Fig. 4. — Selected heads of the Haynes Bluestem wheat (Minn. No. 51) used in the wheat- 

 breeding nursery at Highmore, S. Dak. 



originated by the Minnesota Agricultural Experiment Station. It 

 is a selection from the Haynes Bluestem (Minn. No. 51) obtained 

 from a grower in Manitoba. Because of its uniformity and superior 

 quality it is a good example of the possibilities of improving wheat 

 by selection. This variety appears to be the best of the bluestem 

 wheats, as usually it has slightly exceeded other varieties of this 

 group in yield. It can not be distinguished by its appearance from 

 other bluestem wheats, but it is very uniform in size and shape of 

 grain and in height of plant. 



The Haynes Bluestem should be classed as a late wheat, as it 

 requires about 105 days to mature in normal seasons, the time being 

 slightly longer in a cool, wet season and shorter in a hot, dry one. 

 Owing to its lateness it is seriously affected by rust and midsummer 

 drought, though it often escapes early drought for the same reason. 

 This fact is important, for many growers have rejected early varie- 



