10 
BULLETIN 133, U. S. DEPARTMENT OF AGRICULTURE. 
series was slow to germinate. The rains, which came on May 2 and 
May 15, however, added sufficient moisture to the soil to start a good 
stand on both series. The oats were irrigated twice during the 
season. No difTerence was noted in the time of maturity, the grain 
on all the plats having ripened on July 26. 
In the spring of 1912 the soil was in excellent condition when the 
oats were planted on April 24, and good stands were secured on both 
series. The oats were irrigated twice during the season. No differ- 
ences were noted between the two series until the grain began to head. 
From this time on the crop on the fall-irrigated plats was more vigor- 
ous than on the plats which had not been fall irrigated. The grain 
was ripe on both series on July 29. 
In the spring of 1913 the oats on the fall-irrigated plats germinated 
much more promptly than those on the plats in Series VII. The 
germination on the plats which were not fall irrigated was very irreg- 
ular, but the rains which came in the early part of May added suffi- 
cient moisture to the soil to produce satisfactory stands. The oats 
were irrigated twice during the season. The grain ripened about 
August 1 on both series. 
The numbers of the plats, the height of the oats at maturity, the 
yields of straw and of grain, and the number of pounds of straw 
accompanying the production of each bushel of grain during the 3-year 
period are given in Table Y. The plat numbers were the same in both 
series each year. In Table V, the figures in the columns headed " VI " 
relate to the fall-irrigated plats, while those in the columns headed 
"VII" relate to the plats which were not fall irrigated. 
Table V. — Results obtained with oats on fall-irrigated land (Series VI)andon landnotfall 
irrigated (Series VII) at the Scottsbluff Experiment Farm in 1911, 1912, and 1913. 
Height (inches). 
Yield per acre. 
Pounds o 
bushel 
f straw per 
Year and plat. 
Straw (pounds). 
Grain (bushels). 
Df grain. 
VI. 
VII. 
VI. 
VII. 
VI. 
VII. 
VI. 
VII. 
1911. 
Plat 4 
40 
40 
38 
40 
38 
36 
3,380 
3,350 
3,790 
2,610 
3,280 
3,640 
66.2 
62.5 
76.8 
40.3 
53.7 
55.0 
51.1 
53.6 
49.3 
64.8 
Plat 9 
61.1 
Plat 13 
66.2 
Average 
39 
38 
3,506 
3, 178 
68.5 
49.6 
51.2 
641 
1912. 
Plat 6 
41 
44 
42 
42 
44 
42 
2,920 
4,920 
4,670 
2,230 
3,630 
3,790 
65.6 
113.0 
105.2 
55.3 
96.0 
94.1 
44.5 
43.5 
44.4 
40.3 
Plat 10 
37.8 
Plat 15 
40.3 
Average 
42 
42 
4,170 
3,216 
94.6 
SI. 8 
44.1 
39.3 
1913. 
Plat 2 
43 
45 
42 
42 
3,000 
3,620 
1,910 
2,100 
84.3 
101.2 
76.5 
97.5 
35.6 
35.8 
24.9 
Plat 7 
21.5 
Average 
44 
42 
3,310 
2,005 
92.7 
87.0 
35.7 
23.0 
Average results, 3 
years 
41.9 
40.8 
3,656 
3,521 
83.8 
72.8 
43.6 
4S.4 
Difference in favor of 
fall irrigation. : 
+ 
1.1 
+ 
135 
+ 11.0 
4.8 
