630 
Rotation of Crops. 
Table IX. — Experiments on the Rotation of — Roots , Barley, Clover (or 
Beans), or Fallow, and Wheat ; in Agdell Field, Rotliamsted. 8 courses, 
32 years, 1852-1883. 
AVERAGE AMOUNTS OF POTASH PER ACRE IN THE ROTATION CROPS, COMPARED WITH 
THOSE IN THE CROPS GROWN CONTINUOUSLY. 
TJnmanured 
Superphosphate 
Mixed mineral and 
nitrogenous manure 
Roots carted 
| Roots fed 
Roots carted 
Roots fed 
Roots carted 
Roots fed 
Fal- 
low 
Beans 
or 
clover 
Fal- 
low 
1 
Beans 
or 
elovei 
Fal- 
low 
Beans 
or 
clover 
Fal- 
low 
Beaus 
or 
clover 
Fal- 
low 
Beans 
or 
clover 
Pal- | Beaui 
l0 ' v clover 
SWEDISH TURNIPS. 
| Rotation . . . 
Roots i Continuous 1 . . 
1 Rotn. + or — cont. 
lb. 
5-00 
3-48 
lb. 
3-04 
3-48 
lb. 
4-40 
3-48 
lb. 
2-82 
3-48 
lb. 
22-49 
12-08 
lb. 
21-67 
12-08 | 
lb. 
25-05 
1208 
lb. 
24-86 
12-08 
lb. 
66-62 
39-51 
ib. j 
67-99 
39-51 ! 
lb. 
72-48 
39-61 
lb. 
68-53 
39-51 
1-52 
-0-44 
0-92 
— 04)6 
10-41 
9-59 | 
12-97 
12-78 
27-11 
28-48 
32-97 
29-02 
( Rotation . . . 
Leaves \ Continuous 1 . . 
i Rotn. + or —cont. 
1-07 
0-94 
0*95 
0*94 
1*04 
0*94 
0-93 
0*94 
2-60 
2*38 
2-96 
2-38 
2-77 
2-38 
3-31 
2-38 
8-66 
9-98 
10-32 1 
9-98 
9-89 
9-98 
10-25 
9-98 
0-13 
0-01 
0T0 
-0*01 
0-22 
0-58 j 
0-39 
0-93 
-1-32 
0-34 [ 
-0-09 
0-27 
( Rotation . . . 
Total J Continuous ‘ . . 
( Rotn.+ or — cont. 
6-07 
4-42 
3- 99 
4- 42 
5*44 
4*42 
2 3*75 
4-42 
25-09 
14-46 
24-63 1 
14-46 | 
27-82 
14’46 
28-17 
14-4G 
75-28 
49-49 
78-31 ! 
49-49 
82-37 
49-49 
49-49 
1-65 
-0-43 
1-02 
-0-67 
10-63 
10-17 j 
13-36 
13-71 
25-79 
28-82 j 
32-88 
29-29 
BARLEY. 
( Rotation . . . 
8T3 
8-38 
7-97 
7-15 
8-09 
7-85 1 
10-23 
10-65 
12-33 
12-52 
14-14 
1404 
Grain - Continuous . . 
5-03 
5-03 
6-03 
6-03 
6-59 
6-59 1 
6-59 
6-59 
11-32 
14-32 
14-32 
14-32 
1 Rotn.+ or — cont. 
3-10 
3-35 
2-94 
2-12 
1-50 
1-26 ' 
3-64 
4*06 
-1-99 
-1-80| 
-018 
-0-28 
1 Rotation . . . 
10-83 
11-81 ! 
10-52 
10-09 
9-32 
9-50 
12-10 
12-54 
18-41 
18-97 
23-48 
23-31 
Straw t Continuous . . 
G-45 
6-45 
6-45 
6-45 
7-03 
7*03 
7-03 
7-03 
21-00 
21-00 
21-00 
2100 
1 Rotn.-h or —cont. 
4-38 
5-36 
407 
3-64 
2-29 
2-47 
5-07 
6-51 
-2*59 
-2-03 
2-48 
2-31 
( Rotation . . . 
18-96 
20-19 
18-49 
2 17-24 
17-41 
17-35 
[ 22-33 
23-19 
30-74 
31-49 
37-62 
37-35 
Total -! Continuous . . 
11-48 
11-48 
11-48 
11-48 
13-62 
13-62 
13-62 
13-62 
35-32 
35-32 1 
35-32 
35-32 
lRotn.+ or — cont. 
7-48 
8-71 
7-01 
576 
3-79 
3-73 
8-71 
9-57 
-4-58 
-3-83 
2-30 
203 
BEANS (6 COURSES), CLOVER (2 COURSES), OR FALLOW. 
( Rotation . . . 
Corn J Continuous . . . 
7-26 
2-98 
7-23 
2-98 
7-35 
3-46 
8-79 
3-46 
15-20 
8-94 
i 17-25 
8-94 
lRotn.+ or — cont. 
4-28 
4-25 
3-89 
5-33 
6-26 
| 8-31 
I Rotation . . . 
Straw -1 Continuous . . 
2-87 
1-54 
2-87 
1-54 
3-47 
1-82 
4-01 
1-82 
6-96 
4-33 
7-21 
4-33 
1 Rotn.+ or —cont. 
1-33 
1-33 
1-65 
2-19 
2-63 
2-88 
| Rotation . . . 
Total J Continuous . . 
1013 
4-52 
10-10 
4-52 
10-82 
5-28 
12-80" 
6-28 
22-16 
13-27 
24-46 
13-27 
\ Rotn.-f or — cont. 
5-61 
5-58 
5-54 
7-52 
8-89 
1119 
m I Rotation . . . 
Clover Continuous . . 
3418 
? 
3 29-67 
? 
57-63 
? 
65-48 
? 
123-12 
? 1 
132-62 
? 
Average of 8 courses, ) 
beans and clover J j 
16-14 
= 14-99 
22-52 
25-96 
47-40 1 
51-50 
WHEAT. 
Grain 
Rotation 
Continuous 
8-65 
4-45 
8-08 
445 
8-42 
4-45 
7*26 
4*45 
9-55 
5-27 
9-39 
5-27 
9-69 
5-27 
10-06 
6-27 
9-90 
8-12 
10-82 
8-12 
9-55 
8T2 
10-78 
812 
Rotn. + or - 
cont. 
4-20 
3-63 
3-97 
2-81 
4*28 
4-12 
4-42 
4-79 
1-78 
2-70 
1-43 
2-66 
Straw • 
Rotation 
Continuous 
19-12 
8-49 
17-94 
8-49 
18-30 
8-49 
16-31 
8-49 
20-25 
10-00 
1914 
10-00 
20-45 
10-00 
20-21 
10-00 
25-85 
18-81 
27-47 
18-81 
26-21 
18-81 
2712 
18-81 
Rotn.+ or — 
cont.. 
10-63 
9-45 
"9-81 
7-82 
10-25 
9-14 
10-45 
10-21 
7-04 
8-66 
7-40 
8-31 
Total - 
Rotation 
Continuous 
27-77 
12-94 
26-02 
12-94 
26-72 
12-94 
= 23-57 
12-94 
29-80 
15-27 
28-53 
16-27 
30-14 
15-27 
30-27 
15-27 
35-75 
26-93 
38-29 
26-93 
35-76 
26-93 
37-90 
26-93 
1 
Rotn.+ or — 
cont. 
14-83 
13-08 
13-78 
10-63 
14-53 
13-26 
14-87 
16-00 
8-82 
11-36 
8-83 
10-97 
* Average 19 years, 1819-1852 aud 1856-1870. 2 Probably crop too low owing to a dell. , 
