22 



BULLETIN 398^ U. S. DEPARTMENT OF AGEICULTURE. 



In 1914 the spring wheat was again grown in rephcated fiftieth-acre 

 plats. The seedmg was done on April 20. The precipitation in May 

 and June was above normal. Hot, dry weather in July and August 

 caused the wheat to ripen early and reduced the yields. 



The year 1915 was marked by abnormally high rainfall and low 

 temperatures during most of the growing season. The spring wheat 

 was sown in replicated plats on April 9. The yields were the highest 

 recorded at the substation. 



SUMMARY OP SPRING-WHEAT YIELDS. 



Table XV gives the annual and average yields of 25 varieties of 

 spring wheat grown m plat tests at the Judith Basin substation dur- 

 ing periods of varying length from 1908 to 1915, inclusive. 



This table shows that the Galgalos (C. I. No. 2398) has produced 

 the highest average yield both for the 4-year period (1908-1911) 

 and the 7-year period (1908-1911 and 1913-1915). This wheat is a 

 soft variety and is of less value for milling purposes than the hard 

 wheats. The next highest yielding variety is a durum wheat, the 

 Pelissier (C. I. No. 1584). This variety has a 7-year average yield 

 of 27.2 bushels per acre, which is only 0.4 of a bushel less than the 

 yield of the Galgalos. The durum group, as a whole, has yielded 

 higher, on the average, than any other group. 



Table XV. — Annual and average yields of 25 varieties of spring wheat grown in flat 

 tests at the Judith Basin substation, Moccasin, Mont., during periods of varying length 

 in seven years, 1908 to 1911 and 1913 to 1915, inclusive} 





C.L 



No. 









Yield per 



acre (bushels). 







Group and variety. 



1908 



1909 



1910 



1911 



1913 



i914 



1915 



Average. 



1908 to 

 1911 



1908 to 

 1911, 



1913 to 

 1915 



For 

 period 

 grown. 



Durum group: 



1493 

 1494 

 1520 

 1471 

 1447 

 1440 

 1584 

 1350 

 3024 

 1570 

 1445 

 1444 



4062 

 1517 



2873 

 3641 

 3697 

 3022 



1596 

 2958 



10.0 



10.0 

 9.5 

 7.5 

 5.0 

 5.0 



10.0 

 5.0 



10.0 

 3.3 

 7.5 



15.0 



"z.z 



36.7 

 33.0 

 40.3 

 28.3 

 35.8 

 37.8 

 41.0 

 36.7 

 39.0 

 30.3 

 32.3 

 39.3 



30.3 

 34.2 



10.0 

 7.6 

 0.5 

 9.5 



10.0 

 8.8 



10.5 



12.7 

 8.5 



16.3 

 6.1 

 8.2 



10.2 

 13.2 



25.0 

 31.7 

 29.0 

 29.0 

 30.3 

 33.0 

 28.3 

 36.0 

 26.0 

 24.3 

 26.0 

 27.7 



31.0 

 25.2 



28.0 









20.4 

 20.6 

 21.3 

 18.6 

 20.3 

 21.1 

 22.5 

 22.6 

 20.9 

 20.0 

 18.0 

 22.5 



"'25.'8' 



'""25.'5" 

 27.2 

 26.8 



""'26."8' 



20.4 



Do 









20.6 





30.0 



25.2 



40.1 



25.8 



Bledur 



18.6 











20.3 



Kubanka 



30.7 

 32.0 

 32.0 



23.0 

 26.5 

 25.3 



40.7 

 42.2 

 40.1 



25.5 





27.2 



Pererodka.. 



26 8 





23.9 



Tagam-Qg 









20.0 



Velvet Don 









18.0 



Yellow Ghamovka 



Fife group: 



Cole Hybrid (No. 61)... 

 Ohirka Spring 



32.8 



29.7 

 29.0 



20.0 

 33. 5 



25.0 



22.5 

 23.0 



22.7 

 23.7 

 24.1 

 23.0 



2.5.7 

 22.4 



39.2 



38.0 

 38.0 



41.0 

 42.3 

 41.0 

 40.7 



42.5 

 4L6 



26.8 

 26.9 



19.0 



23.7 



23.7 



Glyndon (Minn. No. 

 163) 



27.9 



Marquis . . 













33.1 



Power 











28.7 

 26.7 



35.2 

 29.2 







31.2 



Rysting 



2.5 

 7.5 



29.0 



23.9 

 31.0 

 29.3 



29.7 

 30.0 



40.2 



13.0 



16.8 

 13.5 

 14.6 



9.1 

 11.7 



18.5 

 14.8 



27.0 



32.7 

 25.0 



24.7 



18.7 

 21.0 



31.3 

 24.7 



18.0 

 20.2 



23.1 

 26.3 



23.1 



Preston group: 



Fretes . . . . 



26.3 



Preston (Minn. No. 188). 

 South Dakota Climax. 



27.1 







22.5 



Bluestem group: 



Haynes (Minn. No. 169). 



Haynes (Minn. No. 51) . . 

 Miscellaneous: 



Galgalos 



2874 

 3021 



2398 

 2116 



'"5."6" 



7.5 













19.2 









17.0 

 24.4 



27.6 



17.0 



30.7 

 27.3 



24.5 

 20.7 



40.5 



27. G 





21.9 

















The crop of 1912 was entirely destroyed by hail. 



