* 
Report of Experiments on the Growth of Wheat. 
Experiments at Eothamsted on the Growth of 
Table XXX. — Average Produce, and Increase by Manure, 
Plots. 
3 
20 
4 
5 (a S{ b) 
21 
22 
~0 (a <f- b) 
7 (a # b) 
8 (a # 6) 
16 (a #6) 
(l7 (a £6) 
J oi- 
ls {a$b) 
10 0) 
10(6) 
11 (a#o) 
12 (a $ b) 
13 (a # 5) 
14 (a<$-6) 
9(a) 
9(«) 
15(a) 
15(6) 
19 
Manures per Acre, per Annum, for 12 Years ; 1852-1863. 
(For further particulars see Appendix Table IX. and Notes, pp. 102-3 ; and 
fur the Manures previous to 1852 see Appendix Tables I,- VIII. pp. 146-161). 
14 Tons Farmyard Manure, every year (20 years, 1844-63) 
Unmanured (20 years, 1844-G3) 
Unmanured (17 years, 1847-63) 
Unmanured (12 years, previously Superphosphate of Limet 
and Ammonia-salts) I 
Superphosphate of Lime 1 (10 years, 1848-63) 
Sulphates of Potass, Soda, and Magnesia (15 years, 1S49-63) 
Mixed Mineral Manure 3 
100 lbs. Muriate Ammonia, and Mixed Mineral Manure .. 
100 lbs. Sulphate Ammonia, and Mixed Mineral Manure .. 
200 lbs. Ammonia-salts 3 , and Mixed Mineral Manure 
400 lbs. Ammonia-salts, and Mixed Mineral Manure .. 
600 lbs. Ammonia-salts, and Mixed Mineral Manure .. 
800 lbs. Ammonia-salts, and Mixed Mineral Manure .. 
(Mixed Mineral Manure (in alternation with 400 lbs. Ammo-'j 
nia-salts) I 
400 lbs. Ammonia-salts (in alternation with Mixed Mineral ( 
Manure) J 
400 lbs. Ammonia-salts, alone (19 years Ammonia-salts alone, 1 
1845-63) J 
400 lbs. Ammonia-salts, alone (13 years, 1851-63) 
400 lbs. Ammonia-salts, and Superphosphate of Lime 
400 lbs. Ammonia-salts, Superphosphate of Lime, and Stil-") 
phate of Soda / 
400 lbs. Ammonia-salts, Superphosphate of Lime, and Sul-i 
phate of Potass J 
400 lbs. Ammonia-salts, Superphosphate of Lime, and Sul-1 
phate of Magnesia j 
550 lbs. Nitrate of Soda, and Mixed Mineral Manure 4 
550 lbs. Nitrate of Soda, alone 5 
Produce, &c. 
Dressed Corn. 
Quantity. 
bush. pks. 
35 U 
15 2 
15 2| 
16 3? 
18 1 
16 H 
18 l| 
22 Of 
21 2f 
400 lbs. Ammonia-salts, Mixed Alkalies 6 , and Superphos-1 
phate of Lime 7 I 
300 lbs. Ammonia-salts, Mixed Alkalies, 0 Superphosphate of| 
Lime," and 500 lbs. liape-Cake ] 
300 lbs. Ammonia-salts, Superphosphate of Lime, 7 andl 
500 lbs. Rape-cake / 
38 0 
38 2 
Weight 
per 
Bushel. 
18 
32 
22 
20 
29 
35 
34' 
35 
34 
25 
33 
34 
31 
2.1 
3f 
Of 
21 
lbs. 
59-3 
56- 5 
57- 0 
57*2 
57*5 
57-2 
57-9 
57*9 
57- 8 
58 - G 
58-4 
57-8 
57- 6 
58- 0 
58-7 
55- 9 
57- 0 
56- 5 
58- 3 
58-0 
58'3 
57'1 
55-4 
58-0 
58-7 
58-1 
1 " Superphosphate of Lime" — 4 parts Bone-ash, and 3 parts Sulphuric Acid, Sp. gr. V7. 
• " Mixed Mineral Manure" — Superphosphate of Lime, and Sulphates of Potass, Soda, and Magnesia. 
3 " Ammonia-salts " — equal parts Sulphate and Muriate of Ammonia of Commerce. 
* 0a— the Mixed Mineral Manure not applied until the 12th Season, 1854-5; and only 475 lbs. NitW 
