1. Averages of 4 years, 4 years, and 8 years.
2. Averages of 9 years, (1853-’61), last 10 years, and total 19 years.
3. Averages of 7 years (1855-’61), last 10 years, and total 17 years.
4. Averages of 9 years (1853-’61), last 10 years, and total 19 years.
[Experiments with Manures on Permanent Meadow land at Rothamsted, England.]
| DESCRIPTION AND AMOUNT OF MANURES PER ACRE. | ANNUAL PRODUCE OF HAY PER ACRE IN LBS. | AVERAGE HAY PER ACRE. | HAY PER ACRE THE 20TH SEASON, 1875. | ||||||||||
| 1856 | 1857 | 1858 | 1859 | 1860 | 1861 | 1862 | 1st 7 Yrs 1856-62. | 20 Years. | 1st Crop | 2nd Crop | Total Hay per Acre. | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | No manure | 2433 | 2724 | 3116 | 2558 | 2822 | 3074 | 3238 | 2824 | 2534 | 2436 | 1491 | 3927 |
| 2 | 400 lbs. ammonia-salts = 82 lbs. of nitrogen | 4028 | 3774 | 3982 | 3644 | 2940 | 3808 | 3854 | 3719 | 2940 | 2702 | 2016 | 4718 |
| 3 | Superphosphate of lime | 2828 | 3176 | 3400 | 3252 | (4 yrs.) 3164 | (17 yrs.) 2492 | 2352 | 1722 | 4074 | |||
| 4 | 400 lbs. ammonia-salts and superphosphate of lime | 4996 | 4788 | 4968 | 4756 | (4 yrs.) 4877 | (17 yrs.) 3612 | 4102 | 1610 | 5712 | |||
| 5 | Mixed mineral manures | 3429 | 3666 | 4082 | 3416 | 3928 | 4488 | 4424 | 3919 | 3948 | 4564 | 2688 | 7252 |
| 6 | 400 lbs. ammonia-salts and mixed mineral manures | 6363 | 6422 | 7172 | 6198 | 5624 | 6316 | 6402 | 6357 | 5712 | 5824 | 2744 | 8508 |
| 7 | 800 lbs. ammonia-salts and mixed mineral manures | 7054 | 6940 | 7508 | 7150 | 5744 | 6710 | 7108 | 6876 | 6454 | 6222 | 5684 | 10,906 |
| 8 | 800 lbs. ammonia-salts and mixed mineral manures, including 200lbs. each silicates, soda, and lime | 7120 | 7000 | 6720 | 4592 | 11,312 | |||||||
| 9 | 275 lbs. nitrate of soda | 2952 | 3588 | 3948 | 4092 | 4446 | 1858-62 3805 | (18 yrs.) 3794 | 3360 | 1456 | 4816 | ||
| 10 | 550 lbs. nitrate of soda = 82 lbs. of nitrogen | 3564 | 4116 | 4410 | 4452 | 4086 | 4126 | (18 yrs.) 3962 | 3276 | 1470 | 4746 | ||
| 11 | Mixed mineral manures and 275 lbs. nitrate of soda | 4236 | 4956 | 4812 | 5514 | 5178 | 4939 | (18 yrs.) 5208 | 5040 | 1862 | 6902 | ||
| 12 | Mixed mineral manures and 550 lbs. nitrate of soda | 5636 | 6072 | 5586 | 5892 | 5718 | 5783 | (18 yrs.) 6384 | 7028 | 1974 | 9002 | ||
| 13 | 14 tons farmyard-manure | 4030 | 5328 | 4164 | 4584 | 5208 | 5052 | 5060 | 4775 | 4130 | 2996 | 1316 | 4312 |
| 14 | 14 tons farmyard-manure and 200 lbs. ammonia-salts | 5009 | 6008 | 5320 | 5356 | 5704 | 5320 | 5556 | 5468 | 4816 | 3766 | 1960 | 5726 |