18 BULLETIN 30, U. S. DEPARTMENT OF AGRICULTURE. 



result considerable weed growth was made possible. The yields per 

 acre of the varieties ranged from 1.16 bushels of Koffoid (one Koffoid 

 plat yielded so little that it could not be thrashed) to 23.33 bushels 

 of Japanese (C. I. No. 1787). The latter was grown on the "old 

 field," * and can not be safely compared with the yields of the other 

 varieties which were grown on the "Richie field." 



Results in 1910. — In the fall of 1909, 61 varieties of winter wheat 

 were planted. The only varieties discarded in 1909 were the Turkey 

 from near Salina, Kans., and the Turkey from Montana, neither of 

 which yielded satisfactorily. 



The yields of 1910 were about the same as those of 1909. The low 

 yields were accounted for at that time in the following manner: 



The winter of 1909-10 was a peculiar one in some ways. The ground received an 

 early covering of snow, which, periodically increased, remained until March. The 

 temperature was generally low throughout the winter season. With the first days 

 of March came a rather sudden change from cold to warm weather. Such a change 

 has been decidedly uncommon in the Juab Valley, and it was claimed by many that 

 the thinning of what at first appeared to be a good stand of grain was due to the 

 injury done to the young roots by the sudden changes in soil temperatures. That 

 there was a thinning is quite certain, but the condition named may not explain its 

 occurrence. 



The highest yield per acre in 1910 was 21.2 bushels for Kharkof 

 (C. I. No. 1583), and the lowest yield was 0.5 bushel for Black Don 

 (durum, C. I. No. 2100), Silver Club (C. I. No. 3001), and the hard 

 winter from Algeria, which had been grown at Nephi previous to 1908. 



Results in 1911. — Six of the varieties grown in 1910 were discarded 

 that year, leaving 55 varieties. The discarded varieties were C. I. 

 No. 1784 (hard winter from Oklahoma), Bluestem (C. I. No. 2985) ; 

 California Gem (C. I. No. 2986), Silver Club (C. I. No. 3001), Salt 

 Lake Club (C. I. No. 3018), and Rieti (C. I. No. 2942). All other 

 varieties were sown again in the fall of 1910. 



The yields of 1911 were very satisfactory, because of exceptionally 

 favorable weather conditions during the entire season. The fall of 

 1910 was ideal. The fall-sown cereals were able to make good growth 

 before the snows of winter covered them. The following winter was 

 a mild one, and consequently there was little winterkilling. The 

 spring of 1911 was rather cold, but no damage by frost was noted. 

 The precipitation of April and May was below normal, but that of 

 June was above normal. All of these factors were favorable to high 

 yields. 



The highest acre yield in 1911 was 32.7 bushels for Koffoid (C. I. 

 No. 2997) and the lowest yield was 3.8 bushels for the Algerian hard 

 winter. 



1 Originally the farm coasisted of 40 acres. In 1908, 15 acres were added on the south side and 47 acres 

 were added on the west side. These fields are referred to as the "old field" (original), the "Richie field" 

 (south addition), and the "Kendall field" (west addition). 



