I78 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
progress at first, especially mustard, while vetches were the best of 
the legumes. It was originally intended to dig in the whole of the 
crops in early winter, but on the upper and slightly lighter half of 
the plot the growth was so poor that it would have been manifestly 
unfair to treat it in the same way as the lower half. The experiment 
was therefore divided into two parts. The crops on the lower half 
(Plots 1-24) were dug in between December 4 and 12 (this part is 
subsequently referred to as the "Autumn Section"), while those on 
the upper half (Plots 25-48) were given a light dressing of basic 
Table II. 
Weights of Second Thinnings of Turnips, June 17, 1920. 
Autumn Section. 
Spring Section. 
Green Manure. 
Plot. 
Weight. 
Mean. 
Plot. 
Weight. 
Mean. 
oz. 
oz. 
Mustard . . j 
12 
IO 
[ 14 { 
36 
24 
} 
29 
13 
17 
37 
34 
Rape . . . { 
9 
20 
3 
4 
[ 4 { 
29 
40 
27 
22 
I 
; 
25 
Rye . . . { 
4 
21 
, 11 
6 
f 9 i 
28 
45 
16 
59 
) 
r 
38 
Oats . . . { 
5 
12 
\ 11 1 
33 
39 
1 
r 
39 
16 
9 
44 
39 
Turnip . . { 
8 
17 
nil 
3 
32 
41 
12 
30 
1 
f 
21 
Black Medick . { 
2 
15 
3 
7 
} 5 { 
34 
47 
19 
Lost 
I 
(19) 
Red Clover . . { 
3 
22 
5 
7 
f 6 1 
27 
46 
31 
61 
\ 
46 
Crimson Clover . j 
6 
19 
7 
4 
I 6 \ 
30 
43 
44 
61 
53 
Lupine . j 
7 
18 
4 
8 
f 6 1 
31 
42 
26 
27 
1 
f 
27 
Vetch . . . { 
10 
9 
} 7 { 
26 
30 
} 
43 
23 
5 
39 
55 
1 
3 
25 
15 
1 
f 
18 
Control . . | 
11 
14 
H 
35 
20 
14 
10 
38 
48 
20 
(20) 
24 
6 
Lost 
\ 
slag (8 cwt. to the acre) and left to grow on during the winter (this part 
is subsequently referred to as the " Spring Section "}. In the late 
winter and early spring the superiority of the crucifers over crimson 
clover and vetches rapidly disappeared on this section ; though rye 
was still among the biggest crops ; red clover and yellow trefoil 
made relatively little growth. The crops on this section were dug 
in on April 8-10. On May 12 and 13 the whole plot was then sown 
with a six-weeks' garden turnip (Early White Stone) at the rate 
of 7 lb. to the acre, in drills 18 inches apart, running at right 
angles to the length of the plot. In the seedling stage the turnips 
suffered a severe attack of flea beetle, but by prompt preventive 
measures this was kept in check and the crop passed success- 
fully to the rough-leaved stage. The crop on the spring section 
