GEREAL INVESTIGATIONS AT THE NEPHI SUBSTATION. 15 
The wheat work at Nephi has been confined almost entirely to the 
testing of winter varieties. A rather detailed report of the results 
obtained is given on the following pages. 
WINTER WHEAT. 
Of the 68 varieties and strains of winter wheat tested, 57 have 
been introduced since cooperation began on July 1, 1907. Previous 
to that time only 11 varieties were under test. The 3 best known 
and highest yielding varieties of the 11 originally tested were Gold 
Coin, Koffoid, and Turkey. These were later given the Cereal Inves- 
tigation numbers 2996, 2997, and 2998, respectively. The average 
yields of these varieties for 1904 to 1906, inclusive, were 15.09, 18.25, 
and 24.96 bushels per acre, respectively.! 
The 57 winter-wheat varieties which were introduced after coopera- 
tion began were obtained from the following places in quantities 
sufficient to sow a tenth-acre plat: 
Varieties. 
Meisherson.Nans-.C..aixpenment Marm, h007 22.2220 50205... 5222 2222s te 42 
MadestOuOal-n@ooperative Parm, 1907-02222... Slee ll ee ee eb ee 6 
Bellefourche, S. Dak., Bellefourche Experiment Farm, 1907..........-...-..-- 1 
Alberta, Canada, Lethbridge Experiment Station, 1907-...........-.---.------- 1 
Mona With starmen, 1907. #020... 3 2 oS, pai Pe autaaly DEERE SU EU le tet Met lies Se oO a ety fc 1 
Rieti, Italy, through the Office of Seed and Plant Introduction, 1908. ........-- 1 
Salina swans: through. Intermountaim Milling: Co., 1908. .......-.522...22202-22- th 
Montana. throueh Warmers’ Cash-Buyers’ Union, 1908..........-.--..-:-.------- ii 
Mewiionem Oma nemtamiMerchOld tok Yea SO aS) cee eevee oe eee koe if 
WonlandervayOnwerOigia Cris utmiml «AOU: Lik kee bk ee eae te ee ee ee 2, 
TNE eb a5 oS a eas SCRE Ss ne Pop a dee 57 
GRAIN YIELDS OF WINTER WHEAT. 
The average yield in bushels per acre of all the varieties of winter 
wheat tested at Nephi in 1908 was 25.4; in 1909, 11.1; in 1910,-11.6; 
in 1911, 23.1; and in 1912, 18.3. This wide variation is due to the 
influence of the physical factors which already have been discussed. 
When there was considerable precipitation in the fall so that the crops 
were up and well prepared for entering the winter, when snow pro- 
tected them from winterkilling, and when the stands were thick enough 
to keep out weeds, the yields were much higher than when the oppo- 
site conditions existed. 
After obtaining the yields of 1911 the varieties were all ranked 
according to their average actual and average computed yields for 
four years, 1908 to 1911, inclusive. It was believed that they had 
been given a fair test, and it was time to begin discarding the inferior 
varieties in order to make room for a more thorough test of the supe- 
rior ones. The rank of the varieties based on their average actual 
1 Jardine, W.M. Arid farming investigations. Utah Agricultural Experiment Station, Bulletin 100. 
