198 The Woburn Field Experiments , 1904. 
On the lower half of the rotation area (also 8 acres) a 
different plan was pursued, the whole being put into mustard. 
White mustard seed, at the rate of 14 lb. per acre, was sown on 
July 21, and, coming up well, sheep (ewes) were put on it at 
the beginning of September, and fed it off until September 17, 
after which the land was ploughed, and the area drilled with 
wheat. 
Green-manuring Experiment {Lansome Field), 1904. 
In 1903 wheat had been grown after the ploughing-in of 
the green crops of mustard, rape, and tares respectively, and, as 
stated in the Report for 1903, had given a better crop after 
mustard than it did after tares. It had been suggested to take' 
a second corn crop in order to ascertain whether the enrichment 
of the land, assumed on theoretical grounds t^ result from the 
growth and ploughing-inof a leguminous and nitrogen-collecting 
crop like tares, as compared with the non-nitrogenous mustard 
crop, could not in this way be brought out, as it might not have 
had time to tell with the single corn crop (wheat). Accord- 
ingly, it was decided to grow barley in 1904 to follow the 
wheat of 1903. 
The land was ploughed in November, 1903, and a second 
ploughing given in March, 1904. “ Goldthorpe ” barley was 
drilled, 9 pecks per acre, on March 22, and came up well. In 
May the barley looked best after the tares, that after mustard 
being not so good ; but by the middle of June these differences 
were not so marked. The barley was cut on August 6, and 
Table III. — Green-manuring Experiment ( Lansome Field). 
Produce of Barley per acre, 1904, after Wheat in 1903. 
Head corn 
Tail 
corn 
Plot 
Manuring 
Straw, chaff, 
Weight 
Bush. 
Weight per 
bushel 
Weight 
&c. 
1 
f Tares ploughed in, with ) 
t mineral manures . . J 
Lb. 
1,038 
18-5 
Lb. 
56'0 
Lb. 
10-5 
C. q. lb. 
110 4 
2 
< Tares ploughed in, with- ) 
1 out mineral manures . 1 
1,036 
18-3 
56'6 
7*5 
9 3 13 
3 
f Rape ploughed in, with \ 
t mineral manures . . j 
906 
15-9 
56-7 
10-5 
9 1 17 
4 
f Rape ploughed in, with - 1 
t out mineral manures . j 
949 
16-7 
56-9 
9-0 
9 1 5 
5 
( Mustard ploughed in, with } 
t mineral manures . . J 
1,125 
19*7 
57-0 
9-0 
11 2 14 
6 
f Mustard ploughed in, ) 
t without mineral manures J 
1,068 
18-7 
57-0 
9-0 
12 0 21 
