260 
The Wohurn Field Experiments, 1907. 
the individual plots being no longer weighed. Lime (2 tons 
per acre) had been put (January, 1899) on a strip along the 
top side of the field, and basic slag (8 cwt. per acre in 1898) on 
a similar strip along the lower side, but both of these applica- 
tions failed to make any impression. In December, 1904, the 
lime dressing was repeated, and also 3 cwt. per acre of super- 
phosphate and 1 cwt. per acre of sulphate of potash given to the 
upper side, while in December, 1904, the basic slag was repeated 
on the lower side with the addition of 1 cwt. per acre of 
sulphate of potash. Though basic slag had, till then, made no 
improvement, it now, with the sulphate of potash added, began 
to show a marked change in the pasture ; clover began to come, 
first here and there, and gradually increased over the area, so that 
in 1906 there was quite a carpet of white clover which spread 
gradually to the upper end of the field, the improvement in 
which from the use of lime, superphosphate, and sulphate of 
potash had not been, hitherto, so decided. It is remarkable 
that such a change should have been effected, and the result 
would seem to point to some joint action of the two materials, 
basic slag and sulphate of potash, inasmuch as each had been 
tried separately on the grass land of the farm without benefit 
accruing. At one end of this field were the two plots more 
recently (1901) laid down with the grasses and deep-rooting 
plants suggested by Mr. R. H. Elliot, of Clifton Park, Kelso. 
These were grazed in 1905 with bullocks and sheep, and the 
stock seemed to eat both the chicory and the burnet very 
closely. In 1906 the field was put up for hay on July 14, and 
the produce of these plots was separately weighed, giving 
results as follows : — 
Produce of Hay per acre, 
1906 (fifth year) 
Plot T. c. q. lb. 
4a Elliot’s mixture — without rye grass . 1 6 2 15 
4b Elliot’s mixture — with rye grass . . 1 16 0 18 
1907. 
Although the field had been hayed in 1906, the grass “ came 
away” so rapidly, owing to the wet spring, that it was im- 
possible to feed it off, and it was once more cut for hay. The 
only plots actually weighed were the two plots 4a and 4b laid 
down in 1901 with the mixtures recommended by Mr. R. H. 
Elliot, of Kelso. These gave, in this the sixth season, the 
following weights of hay per acre : — 
Produce of hay per 
acre, 1907 (sixth year) 
Plot T. c. q. lb. 
4a . Elliot’s mixture — without rye grass . . 2 4 10 
4b . „ ,, with rye grass . . 2 0 0 0 
The field was subsequently grazed. 
