258 The Woburn. Field Experiments, 1.907. 
Globe ” mangold seed was drilled just after. The top-dressings 
of nitrate of soda and salt were given on June 20. For some 
time the absence of sun and warmth caused the crop to be 
rather backward, but it improved greatly towards the end of 
July, though showing, as was universal through o'ut the country, 
a large number of “ bolted ” roots. Ultimately an excellent 
crop, considering the light character of the soil, was obtained, 
and this was taken up on November 8-9. The weights are 
given in Table IX. 
Table IX. — Mangold Experiments, 1907 {Butt Furlong). 
Plot 
Manures per acre 
Produce of roots 
per acre, 
1907 
1 
Dung only ....... 
T. c. q. lb. 
33 7 2 0 
2 
Dung with nitrate of soda, 1 cwt. . 
33 8 2 0 
3 
Dung with nitrate of soda, 1 cwt. ; salt, 1 cwt. 
Dung with nitrate of soda, 2 cwt. . 
33 16 2 0 
4 
32 16 0 0 
In this experiment, as in the rotation barley experiments of 
this year, it is made abundantly clear that “ season ” rather than 
manuring had been the dominant factor. This is shown by the 
fact that on light land like this the plot without nitrate of soda 
has given the high produce of 33 tons 7 cwt. per acre. This 
has been just about the full capability of the land, and conse- 
quently the manures have been able to produce but very little 
more. It is interesting, however, to note that where increases 
are shown they are in the same direction as were the experi- 
ments of the two previous years, an application of 1 cwt. 
per acre of nitrate of soda along with 1 cwt. of salt per acre 
giving better results than either 1 cwt. or 2 cwt. per acre of 
nitrate of soda alone. 
Lucerne {Stacxyjju) Field), 1907. 
These experiments were continued in 1907, no further 
manurial applications being given. All the sets produced three 
cuttings, viz., on June 25, August 27, and October 28. These 
were weighed green, and the results are given in Table X., 
page 259. 
Plots 6 and 7, as in previous years, gave much the highest 
produce ; next in order came the unmanured plot (1), and 
that manured with sulphate of potash (3), the other applications 
appearing to have done harm. 
