308 The Woburn Field Experiments , 1905 and 1906. 
Pulled October 10, 1906. Pulled November 12, 1906. 
T. 
c. 
q. 
lb. 
T. 
c. q. lb. 
Weight of cleaned roots per acre — 18 
4 
l 
4 
24 
7 2 0 
Analysis : — 
Moisture .... 
. 
89-32 
89*44 
Albuminous matters 
1-00 
1-06 
Sugar and digestible carbohydrates, 
woody fibre, &c. 
« 
8-83 
. 
8-55 
Mineral matter (ash) 
• 
0-85 
• 
0-95 
100-00 
100-00 
Nitrogen .... 
• 
0-16 
0-17 
It is clear from this that not 
only 
did the 
crop 
increase very 
materially in weight by keeping 
it 
in the 
ground the extra 
month, but that the roots were 
in 
no 
way inferior at the later 
period ; also that the increase is not due to water only. Of 
course one season will differ from another, and in 1906 frosts 
were late in making their appearance ; hut it may he concluded 
that it will be of advantage, rather than otherwise, to keep the 
crop in the ground until the winter frosts come. 
Lucerne {Stackyard Fikld ), 1905 and 1906. 
On these plots, which were re-sown in 1902, the manurial 
treatment (which had been given in 1902, 1903, and 1904) was 
given again in 1905, but discontinued in 1906. 
Two cuttings were obtained in 1905, and three in 1906, 
The results are given in Table XVII., below. Three new 
Table XVII. — Lucerne {Stackyard Field). 
Green produce per acre, 1905 and 1906 (fourth and fifth years). 
Plot 
Manures per acre, applied 1902, 1903, 1904-1906. 
Green produce per acre 1 
1905 
1906 
1 
No manure ...... 
T. c. q. lb. 
4 3 2 10 
T. c. q. lb. 
7 8 16 
2 
Superphosphate, 4 cwt. ; bone dust, 4 cwt. 
2 11 0 26 
5 11 3 17 
3 
Sulphate of potash, 4 cwt. 
3 15 2 0 
7 12 2 19 
4 
Sulphate of ammonia, 2 cwt. . 
3 10 0 12 
5 14 2 11 
5 
Nitrate of soda, 2 cwt. .... 
3 12 3 6 
8 5 0 17 
6 
Superphosphate, 4 cwt.; bone dust, 4 cwt.; 
sulphate of potash, 4 cwt.; sulphate of 
ammonia, 2 cwt. ..... 
11 14 2 10 
12 12 0 13 
7 
Superphosphate, 4 cwt. ; bone dust, 4 cwt. ; 
sulphate of potash, 4 cwt.; nitrate of 
soda, 2 cwt. ...... 
11 6 2 0 
14 18 3 25 
i Two cuttings in 1905, three in 1906. 
plots were started in 1905 and manured per acre respectively 
as follows : — 
Plot 8. No manure. 
,, 9. Lime, 2 tons. 
„ 10. Superphosphate, 3 cwt. ^ sulphate of potash, 1 cwt. 
