BULLETIN 881, U. S. DEPARTMENT OF AGRICULTURE. 
Table III. — Effect of alfalfa on the yields of oats at the Scottsbluff, Belle Fourche, and 
Huntley Field Stations during the 6-year period from 1913 to 1918, inclusive. 
Station and rotation No. 
Yield of oats per acre (bushels). 
1913 
1914 
1915 
1916 
1917 
1918 
Means. 
Scottsbluff: 
22 (no alfalfa) 
90 
101 
76 
95 
16 
16 
49 
55 
75 
79 
53 
71 
60±8 
70±8 
+ 11 
+• 19 

+ 6 
+ 4 
4- 18 
+ 10±2 
24 (no alfalfa) 
69 
95 
19 
20 
56 
62 
65 
69 
50 
72 
52±G 
44 (following alfalfa) 2 years 
64±G 
+ 26 
+ 1 
+ 6 
"+ 4 
+ 22 
+ 12±4 
28 (no alfalfa) 
65 
83 
9 
22 
33 
41 
53 
61 
44 
59 
41-1-7 
48 (following alfalfa) 2 years 
53+7 
Difference 
+ 18 
+ 13 
+ 8 
+ 8 
+ 15 
+ 12±1.5 
30 (no alfalfa) 
79 
84 
16 
18 
64 
56 
65 
74 
69 
77 
59±7 
60 (following alfalfa) 2 years 
62±S 
Difference - 
+ 5 
+ 2 
- 8 
+ 9 
+ 8 
+ 3±2 
31 (nc alfalfa) 
86 
83 
20 
19 
71 
56 
88 
76 
80 
90 
69±8 
61 (following alfalfa) 2 years 
65±9 
Difference 
- 3 
- 1 
- 15 
- 12 
+ 10 
— 4±3 
32 (no alfalfa) 
51 
70 
10 
12 
68 
48 
61 
65 
60 
79 
50±7 
62 (following alfalfa) 2 years 
55±8 
Difference 
+ 19 
+ 2 
- 20 
+ 4 
71 
35 
+ 19 
4- 5±5 
Belle Fourche: 
22 (no alfalfa) 
45 
26 
61 
99 
75 
57 
36 
87 
48 
73±6 
42 (following alfalfa) 1 year 
47±5 
- 19 
- 16 
- 24 
- 21 
- 36 
- 39 
— 26±3 
24 (no alfalfa) '. 
74 
110 
112 
116 
58 
58 
73 
72 
90 
83 
Sl±7 
44 (following alfalfa) 2 years 
S8±9 
Difference 
+ 36 
+ 4 

- 1 
- 7 
+ 7±5 
28 (no alfalfa) 
26 
105 
50 
118 
27 
58 
40 
69 
36 
86 
36±3 
48 (following alfalfa) 2 years 
87 ±7 
Difference 
+ 79 
+ 68 
+ 31 
+ 29 
+ 50 
+51±7 
30 (no alfalfa) 
93 
95 
107 
109 
56 
50 
66 
52 
70 
78 
78±7 
60 (following alfalfa) 2 years 
77±9 
Difference 
+ 2 
+ 2 
- 6 
-14 
+ 8 
— 1±3 
31 (no alfalfa) 
90 
100 
104 
114 
71 
83 
76 
49 
81 
81 
84±4 
61 (following alfalfa) 2 years 
85±7 
Difference 
+ 10 
+ 10 
+ 12 
- 27 

+ 1±5 
32 (no alfalfa) 
92 
104 
68 
80 
62 
64 
41 
45 
54 
67 
64±6 
62 (following alfalfa) 2 years 
72±7 
Difference 
+ 12 
+ 12 
+ 2 
+ 4 
+ 13 
+ 8±2 
Huntley: 
22 (no alfalfa) 
97 
103 
109 
84 
79 
73 
94 
91 
81 
89 
99 
103 
93±3 
42 (following alfalfa) 1 year 
90+3 
Difference 
+ 6 
- 25 
- 6 
- 3 
+ 8 
+ 4 
3±3 
24 (no alfalfa) 
103 
105 
81 
77 
7? 
83 
68 
62 
93 
93 
83±5 
44 (following alfalfa) 2 years 
84±5 
Difference 
+ 2 
- 4 
+ 11 
- 6 

+ 1±2 
30 (no alfalfa) 
87 
108 
104 
82 
47 
102 
46 
87 
80 
127 
73±9 
60 (following alfalfa) 2 years 
101±6 
Difference 
+ 21 
- 22 
+ 55 
+ 41 
+ 47 
+28±10 
31 (no alfalfa) 
94 
103 
103 
76 
105 
50 
111 
86 
119 
82±6 
61 (following alfalfa) 2 years 
103 ±4 
Difference 
+ 9 
- 27 
+ 28 
+ 61 
+ 33 
+21±10 

