10 
BULLETIN" 881, U. S. DEPARTMENT OF AGRICULTURE. 
Table IV. — Effect of alfalfa on the yields of sugar beets at the Scottsbluff, Belle Fourche; 
and Huntley Field Stations, 1914 to 1918, inclusive. 
Station and rotation No. 
Yield of sugar 1 
aeets per acre (tons). 
1914 
1915 
1916 
1917 
1918 
Means. 
Scottsbluff: 
14.5 
21.2 
10.6 
16.3 
5.8 
10.4 
13.0 
17.7 
15.3 
21.8 
11.8±1.2 
17.5 + 1.4 
+6.7 
+5.7 
+4.6 
+4.7 
+6.5 
+5. 7± .3 
22 (no alfalfa) 
14.2 
20.7 
12.0 
16.3 
7.3 
7.3 
11.1 
14.5 
14.3 
21.9 
11.8+ .7 
16. 1±1.8 
+6.5 
+4.3 

+3.4 
+ 7.6 
+4.3± .9 
30 (no alfalfa) 
10.2 
12.5 
9.8 
7.3 
9.1 
15.3 
10.6 
16.0 
9.9± .2 
60 (following alfalfa) 3d year 
12.8±1.4 
+2.3 
-2.5 
+6.2 
+5.4 
+2.9±1.4 
31 (no alfalfa) 
15.6 
15.3 
17.1 
11.9 
16.0 
19.5 
20.2 
23.3 
17.2+ .7 
61 (following alfalfa) 3d year '. 
17.5±1.9 
-.3 
-5.2 
+3.5 
+3.1 
+ .3+1.4 
32 (no alfalfa) 
10.1 
13.3 
8.8 
6.8 
10.8 
15.4 
8.9 
16.5 
9.6± .4 
13.0±1.5 
_ 
+3.2 
-2.0 
+4.6 
+ 7.6 
+3.4+1.3 
Belle Fourche: 
20 (no alfalfa) 
11.3 
12.8 
12.2 
11.0 
9.7 
8.8 
15.3 
14.1 
10.9 
11.0 
11. 9± .6 
11. 5± .6 
+ 1.5 
-1.2 
-.9 
-1.2 
+ .1 
-.4± .4 
22 (no alfalfa) 
12.3 
11.1 
9.1 
7.0 
8.1 
4.2 
12.7 
10.0 
8.6 
8.9 
10.2+ .8 
8.2± .9 
-1.2 
-2.1 
-3.9 
-2.7 
+ .3 
-2.0 + .5 
30 (no alfalfa) . 
7.3 
9.4 
4.6 
7.2 
7.4 
12.7 
7.3 
13.7 
6.6+ .5 
10.7±1.2 
+2.1 
+2.6 
+5.3 
+6.4 
+4. 1± .9 
31 (no alfalfa) 
13.2 
10.9 
8.2 
10.4 
15.3 
15.7 
12.2 
13.8 
12.2 + 1.0 
12.7+1.0 
-2.3 
+2.2 
+ .4 
+ 1.6 
+ .5+ .7 
32 (no alfalfa) 
6.8 
8.3 
4.0 
4.8 
7.6 
8.5 
6.0 
9.9 
6.1+ .7 
7.9+ .7 
+ 1.5 
+ .8 
+ .9 
+3.9 
+ 1.8+ .5 
Huntley: 
20 (no alfalfa) 
15.1 
13.9 
8.3 
15.4 
15.3 
10.4 
9.6 
8.4 
14.6 
16.2 
12.6±1.2 
12.9±1.2 
-1.2 
+7.1 
-4.9 
-1.2 
+1.6 
+ .3 + 1.4 
22 (no alfalfa) 
10.4 
9.3 
6.8 
7.6 
11.1 
11.4 
11.3 
5.9 
10.2 
13.1 
10.0+ .5 
9.5+ .9 
-1.1 
+ .8 
+ .3 
-5.4 
+2.9 
-.5+ .9 
30 (no alfalfa) 
4.8 
12.9 
6.7 
7.4 
6.7 
8.3 
8.4 
14.2 
6.7+ .4 
60 (following alfalfa) 3d year 
10.7+1.6 
+8.1 
+ • 7 
+ 1.6 
+5.8 
+4.0+1.4 
31 (no alfalfa) 
9.1 
8.7 
10.0 
15.6 
9.6 
13.0 
10.6 
14.7 
9.8+ .2 
61 (following alfalfa) 3d year 
13.0+1.0 
Difference 
-.4 
+5.6 
+3.4 
+4.1 
+3.2+ .9 
In addition to recording the yield of beets from these rotation 
plats, it has been customary also to determine the average size of 
the beets by counting and weighing the product of several represent- 
