366  The  Wohurn  Field  Experiments,  1909, 
Table  I. — Continuous  Growing  of  Wheat,  1909 
(33rrf  Season). 
(Wheat  grown  year  after  year  on  the  same  land,  the  manures  being  applied 
every  year.) 
Stackyard  Field — Produce  per  acre. 
Head  corn 
Tail 
corn 
Straw, 
Value 
per 
quarter 
on  basis 
of 
34s.  U. 
Plot 
Manures  per  acre 
No.  of 
bush. 
Weight 
per 
bushel 
s 
•Sf 
'5 
chaff, 
i&C. 
1 
Unmanured  .... 
7-5 
Lb. 
60-7 
Lb. 
43 
C.  q.  Ih. 
7 3 26 
s.  d. 
34  0 
2a 
Sulphate  of  ammonia  (=25  lb. 
ammonia)  .... 
12  9 
2aa 
As  2a,  with  5 cwt.  lime,  Jan., 
1905,  repeated  April,  1909  . 
_ 
4 0 7 
2b 
As  2a,  with  2 tons  lime,  Dec., 
1897  
13-7 
60-0 
117 
14  2 0 
32  0 
2bb 
As  2b,  with  2 tons  lime  (re- 
peated), Jan.,  1905 
11-7 
58-0 
112 
14  0 24 
31  0 
3a 
Nitrateof  soda{=50  Ib.ammonial 
15-6 
55-7 
201 
18  2 6 
31  0 
3b 
N i trate  of  soda(=25  Ib.ammonia) 
11-6 
55-7 
154 
18  3 12 
31  0 
4 
Mineral  manures  (superphos- 
phate, 3 cwt. ; sulphate  of 
potash,  \ cwt.) 
6-5 
60-7 
39 
7 1 12 
34  0 
53i 
Mineral  manures  and  sulphate 
of  ammonia  (=25  lb.  ammonia) 
18-4 
60-8 
95 
18  2 0 
34  6 
5b 
As  5a,  with  1 ton  lime,  Jan., 
1905  
23-5 
59-7 
95 
22  0 8 
34  6 
6 
Mineral  manures  and  nitrate 
of  soda  (=25  lb.  ammonia)  . 
13-5 
56-5 
94 
16  0 15 
33  0 
7 
Unmanured  .... 
8-0 
60-5 
46 
7 2 16 
34  0 
8a 
• 
Mineral  manures  and  (in  alter- 
nate years)  sulphate  of 
ammonia  (=50  lb.  ammonia) 
2-3' 
60-0 
20 
4 2 24 
34  0 
8aa 
As  8a,  with  10  cwt.  lime,  Jan., 
1905  
18-3' 
59-7 
129 
18  0 15 
34  0 
8b 
Mineral  manures,  sulphate  of 
ammonia  (=50  lb.  ammonia) 
omitted  (in  alternate  years). 
2-8* 
62-0 
24 
4 1 0 
34  0 
8bb 
As  8b,  with  10  cwt.  lime,  Jan., 
1905  
18-32 
61-2 
84 
16  1 17 
34  6 
9a 
Mineral  manures  and  (in  alter- 
nate years)  nitrate  of  soda 
(=50  lb.  ammonia) 
14-2> 
56-7 
105 
17  0 16 
33  0 
9b 
Mineral  manures,  nitrate  of 
soda  (=50  lb.  ammonia) 
omitted  (in  alternate  years). 
7-02 
60-6 
48 
9 0 6 
33  0 
10a 
Superphosphate  3 cwt.,  nitrate 
of  soda  (=25  lb.  ammonia)  . 
13-5 
57-7 
118 
14  1 24 
33  0 
10b 
Rape  dust  (=25  lb.  ammonia). 
22-5 
60-2 
106 
20  1 25 
34  0 
11a 
Sulphate  of  potash  1 cwt.,  ni- 
trate of  soda  (=25  lb.  am- 
monia) ..... 
11-1 
58-5 
41 
13  1 12 
33  0 
11b 
Faimyard  manure  (=100  lb. 
ammonia)  .... 
27-8 
58-1 
43 
33  2 12 
33  0 
^ Applied. 
Omitted. 
