Experiments on the Growth of Barley, Year after Year, on the same land, without Manure, and with different descriptions of Manure, Hoos Field, Rothamsted, England.
TABLE I.—SHOWING, taken together with the foot-notes, THE DESCRIPTION AND QUANTITIES OF THE MANURES APPLIED PER ACRE ON EACH PLOT, IN EACH YEAR OF THE TWENTY, 1852-1871 INCLUSIVE.
[N.B. This table has reference to all the succeeding Tables].
| Plots | manures per acre, per annum (unless otherwise stated in the foot-notes). | Plots |
|---|---|---|
| 1 O. | Unmanured continuously | 1 O. |
| 2 O. | 3½ cwts. Superphosphate of Lime* | 2 O. |
| 3 O. | 200 lbs. †Sulphate of Potass, 100 lbs. ‡ Sulphate Soda, 100 lbs. Sulphate Magnesia | 3 O. |
| 4 O. | 200 lbs. †Sulphate Potass. 100 lbs. ‡ Sulphate Soda, 100 lbs. Sulphate Magnesia, 3½ cwts. Superphosphate | 4 O. |
| 1 A. | 200 lbs. Ammonia-salts § | 1 A. |
| 2 A. | 200 lbs. Ammonia-salts, 3½ cwts. Superphosphate | 2 A. |
| 3 A. | 200 lbs. Ammonia-salts, 200 lbs. †Sulphate Potass, 100 lbs. ‡Sulphate Soda, 100 lbs. Sulphate Magnesia | 3 A. |
| 4 A. | 200 lbs. Ammonia salts 200 lbs. †Sulphate Potass, 100 lbs. ‡Sulphate Soda, 100 lbs. Sulphate Magnesia, 3½ cwts. Superphosphate | 4 A. |
| {1 AA. | 275 lbs. Nitrate Soda | 1 AA.} |
| {2 AA. | 275 lbs. Nitrate Soda, 3½ cwts. Superphosphate | 2 AA.} |
| ‖{3 AA. | 275 lbs. Nitrate Soda, 200 lbs. † Sulphate Potass, 100 lbs. ‡Sulphate Soda, 100 lbs. Sulphate Magnesia | 3 AA.}‖ |
| {4 AA. | 275 lbs. Nitrate Soda, 200 lbs. †Sulphate Potass, 100 lbs. ‡Sulphate Soda, 100 lbs. Sulphate Magnesia, 3½ cwts. Superphosphate | 4 AA.} |
| {1 AAS. | 275 lbs. Nitrate Soda, 400 lbs. ¶Silicate Soda | 1 AAS.} |
| {2 AAS. | 275 lbs. Nitrate Soda, 400 lbs. ¶Silicate Soda, 3½ cwts. Superphosphate | 2 AAS.} |
| {3 AAS. | 275 lbs. Nitrate Soda, 400 lbs. ¶Silicate Soda, 200 lbs. †Sulphate Potass, 100 lbs. ‡Sulphate Soda, 100 lbs. Sulphate Magnesia | 3 AAS.} |
| {4 AAS. | 275 lbs. Nitrate Soda, 400 lbs. ¶Silicate Soda, 200 lbs. †Sulphate Potass, 100 lbs. ‡Sulphate Soda 100 lbs. Sulphate Magnesia, 3½ cwts. Superphosphate | 4 AAS.} |
| {1 C. | 1000 lbs. Rape-cake | 1 C.} |
| {2 C. | 1000 lbs. Rape-cake, 3½ cwts. Superphosphate | 2 C.} |
| **{3 C. | 1000 lbs. Rape-cake, 200 lbs. † Sulphate Potass, 100 lbs. ‡Sulphate Soda, 100 lbs. Sulphate Magnesia, | 3 C.}** |
| {4 C. | 1000 lbs. Rape-cake, 200 lbs. †Sulphate Potass, 100 lbs. ‡Sulphate Soda, 100 lbs. Sulphate Magnesia, 3½ cwts. Superphosphate | 4 C.} |
| {1 N. | 275 lbs. Nitrate Soda | 1 N.} |
| ††{2 N. | 275 lbs. Nitrate Soda (550 lbs. Nitrate for 5 years, 1853, 4, 5, 6, and 7) | 2 N.} |
| M. | 100 lbs. ‡‡Sulphate Soda, 100 lbs. Sulphate Magnesia, 3½ cwts. Superphosphate (commencing 1855; 1852, 3, and 4, unmanured | M. |
| 5 O. | 200 lbs. †Sulphate Potass, 3½ cwts. Superphosphate (200 lbs. Ammonia-salts also, for the first year, 1852, only) | 5 O. |
| 5 A. | 200 lbs. †Sulphate Potass, 3½ cwts. Superphosphate, 200 lbs. Ammonia-salts | 5 A. |
| 6 {1 | Unmanured continuously | 1} 6 |
| {2 | Ashes (burnt-soil and turf) | 2} |
| 7 | 14 Tons Farmyard-Manure | 7 |
NOTES TO TABLE I.
* “3½ cwts. Superphosphate of Lime”—in all cases, made from 200 lbs. Bone ash, 150 lbs. Sulphuric acid sp. gr. 1.7 (and water).
† Sulphate Potass—300 lbs. per annum for the first 6 years, 1852-7.
‡ Sulphate Soda—200 lbs. per annum for the first 6 years, 1852-7.
§ The “Ammonia-salts”—in all cases equal parts of Sulphate and Muriate of Ammonia of Commerce.
‖ Plots “AA” and “AAS”—first 6 years, 1852-7, instead of Nitrate of Soda, 400 lbs. Ammonia-salts per annum; next 10 years, 1858-67, 200 lbs. Ammonia-salts per annum; 1868, and since, 275 lbs. Nitrate of Soda per annum. 275 lbs. Nitrate of Soda is reckoned to contain the same amount of Nitrogen as 200 lbs. “Ammonia-salts.”