52 
BULLETIN 618, U. S. DEPARTMENT OF AGRICULTURE. 
RESULTS AT XEPHI, UTAH. 
The Nephi substation is located in Juab Valley in tbe eastern part 
of Juab County, Utah, near the summit of the Levan Ridge. This 
is a ridge of land a few miles in width, extending transversely across 
the valley floor south of the town of Nephi. The soil is a sandy 
clay loam. The altitude at the town of Nephi is 5,580 feet. The 
exact altitude of the substation on the ridge, 6 miles distant, is not 
known, but is thought to be nearly 6,000 feet. The average annual 
precipitation is 13.5 inches in a 17-year period. The experiments 
at Nephi were conducted cooperatively by the Utah Agricultural 
Experiment Station and the Office of Cereal Investigations. 
The experiments began in 1908 and cover a period of eight years, 
no durum wheats having been grown in 1913. The results of varietal 
experiments with four durum wheats and one winter common wheat 
are shown in Table XXVII. The principal data are presented 
graphically in figure 13. One of the durum varieties was tested for 
only five years, but data on all of the others are available for the 
full 8-year period. 
Table XXVII. — Annual and average yields of four varieties of durum wheat and one 
variety of common wheat groicn at the Nephi ( Utah) substation during periods of varying 
length in the nine years from 1908 to 1916, inclusive. 11 
[Data obtained in cooperation with the Utah Agricultural Experiment Station.] 
C.I. 
No. 
Yield per acre (bushels). 
1908 
1909 
Average. 
Class, group, and variety. 
1910 
1911 
1912 
1914 
1915 
1916 
5 
years, 
1908 
to 
1912. 
8 
vears, 
1908- 
1912 
and 
1914- 
1916. 
Durum: 
Kubanka— Kubanka 
Pelissier — 
1440 
1594 
2087 
2088 
1437 
10.0 
12.5 
8.0 
12.0 
30.3 
11.5 
7.8 
8.8 
9.7 
18.7 
2.0 
2.2 
2.2 
3.2 
20.3 
7.3 
5.5 
6.0 
7.0 
26.7 
5.3 15.7 
4.1 ' 19.0 
18.2 
15.3 
14.2 
15.0 
12.7 
14.2 
7.2 
6.4 
6.3 
7. 7 
23.1 
10.2 
9.9 
ITohamed ben Bachir 
6.3 
6.6 
19.5 
18.5 
9.8 
Common: 
Crimean (winter) — Crimean. . 
40.3 
29.4 
23.0 
26.0 
a Durum wheats were not grown in 1913. 
In the five years from 1908 to 1912, inclusive, Kahla, a black- 
glumed variety, slightly outyielded the other three durums. It was 
not grown longer. In the eight years, Kubanka excelled the two little- 
Known varieties of the Pelissier group by a small fraction of a bushel. 
The durum yields are all low, however, the best annual yield recorded 
being only 19 bushels per acre. The winter precipitation and short 
growing season both favor winter wheats. It is not surprising, there- 
fore, to find the 8-year average yield of Crimean hard red winter 
