TILLAGE AND ROTATION EXPERIMENTS AT NEPHI, UTAH. 37 
Table XV. — Annual and average yields of winter wheat harvested at four different stages 
of maturity at the Nephi substation, for the years 1909 to 1912, inclusive. 
Stage of maturity when harvested. 
Green dough 
Hard dough . 
Fully ripe... 
Overripe . . . 
Yield per acre of grain (hushels). 
1909 1910 1911 1912 Average 
8.80 
14.00 
13.80 
12.70 
20.30 
26.40 
24.60 
20.70 
6.50 
10.20 
11.50 
11.80 
10.86 
14.86 
14.06 
13.43 
Table XV shows that with one exception the yield each year 
favored harvesting in the hard-dough stage, though the differences 
are not great. The earliest harvest gave the smallest yields, due 
probably to the shrinking of the grain. The small decrease in the 
average yield from hard dough to overripe was probably due to 
shattering at harvest time. 
FREQUENCY OF CROPPING LAND TO WINTER WHEAT. 
One of the first tests begun by the Utah experiment station on the 
Nephi farm was planned to determine the relative return from 
cropping land to winter wheat continuously, every second year, one 
year in three, and two years in three. This test was conducted on 
four fifth-acre plats until the fall of 1907, when five tenth-acre plats 
were added, to allow the production of a crop under each condition 
each year. Since 1907, then, nine plats have been used. 
The total yields per acre of the four fifth-acre plats obtained pre- 
vious to 1908, the annual and total acre yields of all the plats from 
1908 to 1913, and the total yields of the fifth-acre plats from 1904 to 
1913, inclusive, are reported in Table XVI. 
Table XVI. — Annual and total yields of winter wheat obtained from continuous and 
alternate cropping and from growing one and two crops in three years at the Nephi 
substation, 1904 to 1913, inclusive. 
Yield per acre of grain (bushels). 
Frequency of 
crop. 
Total 
yield, 
1904 to 
1907.1 
1908 
1909 
1910 
1911 
1912 
1913 
Total, 
1908 to 
1913. 
Total, 
1904 to 
1913. 
Continuous 
Alternate 
Do 
60.20 
50.80 
13.41 
32.66 
Fallow. 
32.74 
Fallow. 
21.16 
Fallow. 
Fallow. 
19.16 
14.58 
Fallow. 
2.50 
13.42 
2.50 
Fallow. 
Fallow. 
3.50 
Fallow. 
7.80 
9.90 
FaUow. 
Fallow. 
10. 30 
8.20 
5.00 
Fallow. 
Fallow. 
5.70 
Fallow. 
28.00 
23.60 
Fallow. 
8.10 
Fallow. 
Fallow. 
27.00 
6.00 
4.80 
Fallow. 
3.90 
6.50 
Fallow. 
Fallow. 
10.80 
Fallow. 
4.50 
Fallow. 
1.83 
Fallow. 
6.83 
2.33 
11.17 
Fallow. 
Fallow. 
51.99 
47.36 
32.33 
73.66 
26.13 
39.79 
16.17 
14. 30 
46.16 
112. 19 
98.16 
Two crops in 
three years 
Do 
25.10 
98.76 
Do 
One crop in three 
49. 10 
65.27 
Do 
Do 
Taken from Bulletin 112 of the Utah Agricultural Experiment Station. 
