294 The Woburn Field Experiments , 1905 and 1906. 
and, in place of it, to grow a green crop such as mustard. 
In other respects the former lines were adhered to, except 
that cake and corn were not given in such quantity as 
formerly (to avoid over-manuring), and were only fed once 
in the course of the rotation and not twice as before. In 
this way it was hoped that the real differences of manurial 
value between decorticated cotton cake and maize meal would 
be brought out. 
To return to Rotation I. On plot 1 the sheep were to have 
decorticated cotton cake given them, on plot 2 maize meal, 
while neither cake nor corn was to be given on plots 3 and 4, 
these being kept as “ control ” or “ standard ” plots. The 
actual quantities consumed per acre, with the 12 tons of roots 
and 1^ cwt. of clover hay chaff, were 920 lb. decorticated 
cotton cake on plot 1 and 920 lb. of maize meal on plot 2. 
This came to, on the average, \ lb. of cake or corn per head 
daily throughout the period of feeding (which would be an 
ordinary amount for a farmer to give) together with lb. 
of clover hay chaff. The sheep, 100 in number, fed off first 
the control plots (4 and 3) and then passed on to plot 2, and 
finally to plot 1. The whole period of feeding off the four 
plots (^ acre each) was 33 days (November 30, 1905, to January 
1, 1906). The land was then ploughed and cultivated, and 
“ Chevalier ” barley was drilled in on April 5, 1906, at the rate 
of 9 pecks per acre. The crop came very well, and it was soon 
noticeable that plot 1 (decorticated cotton cake) was much 
superior to the others, between which, however, there was 
little to choose. Heavy rains towards the end of June 
damaged the barley a good deal, and plot 1 went down in 
places somewhat, though it recovered later. The plots were 
harvested August 23-24, threshed on November 16, and subse- 
quently valued. The results are given in Table IY. 
Table IY . — Rotation I. Barley , 1906. 
Stackyard Field — Produce per acre. 
Plot 
Head corn 
Tail 
corn 
Straw, 
chaff, &c. 
Value of 
corn per 
quarter 
on basis 
of 27s. 
Weight 
Bush. 
Weight 
per 
bushel 
Weight 
C. q. lb. 
Lb. 
Lb. 
C. q. lb. 
s. d. 
1 
Swedes fed off with 
dec. cotton cake . 
26 3 3 
55-4 
54-1 
30 
35 1 10 
25 0 
2 
Swedes fed off with 
maize meal . 
23 1 3 
47-4 
55-0 
21 
28 0 17 
26 0 
3 
Swedes fed off with- 
out cake or corn . 
23 0 27 
47-0 
55-3 
34 
25 3 26 
27 6 
4 
Swedes fed off with- 
out cake or corn . 
22 1 10 
45-1 
55-5 
26 
24 1 4 
26 0 
