CEREAL EXPERIMENTS AT JUDITH BASIN SUBSTATION. 



25 



in 1909, wlien 206 varieties and selections were grown in 2-rod rows. 

 In 1910 and 1911 head selections were made from the most promising 

 varieties. In 1912 the spring-wheat nursery was completely de- 

 stroyed by hail. A reserve supply of seed of a few of the selections 

 was available and was sown in 1913. At the present time several 

 selections have been increased and are being tested in fiftieth-acre 

 plats. 



COMPARISON OF SPRING AND WINTER WHEATS. 



Table XVIII gives the annual and average yields of the leading 

 varieties of spring and winter wheats din-ing six years, 1909 to 1911 

 and 1 9 1 3 to 1915, inclusive. The average yields are shown graphically 

 in figure 8. Since the spring wheat was destroyed by hail in 1912, it 

 was necessary to omit that year. The table shows that on the 



TUPKEK C. /. A/9/SS8 1 



Yse. 3 3U 

 \36.0 3U. 



SPRING iV/i£:/iT 



P£L /ss/e/?, c./.A/p/sa^!^ — 



GH/ff/f/9 SPff/A/Cj C/. NP/S/7 



pfferss, a. /. a/f/sps 1 



G/}lS/9l. OS, C./. N?2S9&~ 



Fig. S. — Diagram showing the average yields of winter and spring wheat varieties at the Judith Basia 

 substation for six years, 1909 to 1911 and 1913 to 1915, inclusive. 



average the winter wheats outyield the spring varieties by about 8 

 bushels per acre. Heads of representative varieties of the various 

 groups of wheat are shown in figure 9. 



Table XVIII. — Annual and average, yields of leading varieties of winter and spring 

 wheat grown at the Judith Basin substation, Moccasin, Mont., in the six years 1909 

 to 1911 and 1913 to 1915, inclusive. 





Group and variety. 



C.I. 

 No. 





Yield per acre (bushels). 







1909 



1910 



1911 



1913 



1914 



1915 



Average. 



Crimean: 



TTharVof . . 



■WINTER 'wheat. 



1583 

 1442 

 1558 



1584 

 1517 

 1596 

 2398 



32.8 

 20.7 

 21.7 



41.0 

 34.2 

 23.9 

 40.2 



48.0 

 46.2 

 43.7 



10.5 

 13.2 



16.8 

 18.5 



41.3 

 43.3 

 43.7 



28.3 

 25.2 

 32.7 

 31.3 



31.1 

 33.1 

 32.1 



32.6 

 29.0 

 35.2 

 30.7 



24.5 

 25.5 

 25.8 



26.5 

 23.0 

 25.7 

 24.5 



49.4 

 49.0 

 49.2 



42.2 

 38.0 

 42.5 

 40.5 



38.0 



Do 



36.3 



Turkey... - ^ 



36.0 



Durum: 



Pelissip.r. . 



SPRING WHEAT. 



30.2 



Fife: 



Ghirka 



27.1 



Preston: 



Fretes 



29.4 



Miscellaneous: 



Galgalos 



30.9 







