trate of soda, 550 lb., and | | | | |
| mixed mineral manure | 36 | 6949 | 2834 |2883 | +49
16_a_|Unmanured* |13-1/2 | 2194 | 2907 |2557 | -350
2 |Farmyard manure, 14 tons |31-1/2 | 5356 | 4329 |4502 | +173
-----+----------------------------------+-------+--------+------+-----+---------
* During 1852-64 received annually ammonium salts, 800 lb., with mixed mineral
manure, and yielded an average product of 39-1/2 bushels of grain and 46-5/8
cwt. of straw.

NOTE VIII. (p. 141).

$1$2

--------------+--------+-----------------+----------------------------------
| | | Nitrogen as nitrates.
| | +-----------------+----------------
| | Amount of | Per million of | Per acre.
|Rainfall| drainage. | water. |
| +--------+--------+--------+--------+--------+-------
| |20-inch |60-inch |20-inch |60-inch |20-inch |60-inch
| |gauge. |gauge. |gauge. |gauge. |gauge. |gauge.
--------------+--------+--------+--------+--------+--------+--------+-------
|Inches. |Inches. |Inches. | | | lb. | lb.
March | 1.70 | 0.85 | 0.94 | 7.3 | 8.9 | 1.41 | 1.89
April | 2.25 | 0.72 | 0.79 | 8.3 | 9.0 | 1.35 | 1.61
May | 2.48 | 0.80 | 0.79 | 8.4 | 9.1 | 1.53 | 1.63
June | 2.59 | 0.78 | 0.78 | 9.2 | 9.1 | 1.62 | 1.60
July | 2.85 | 0.68 | 0.62 | 13.5 | 11.8 | 2.08 | 1.66
August | 2.69 | 0.84 | 0.76 | 15.1 | 13.3 | 2.87 | 2.28
September | 2.70 | 0.97 | 0.82 | 17.7 | 13.4 | 3.86 | 2.50
October | 3.12 | 1.86 | 1.68 | 13.8 | 11.9 | 5.83 | 4.53
November | 3.20 | 2.44 | 2.32 | 11.8 | 11.4 | 6.50 | 5.98
December | 2.34 | 1.88 | 1.88 | 9.5 | 10.6 | 4.06 | 4.51
January | 2.13 | 1.79 | 1.93 | 7.4 | 8.9 | 2.99 | 3.88
February | 2.16 | 1.84 | 1.74 | 7.7 | 9.1 | 3.19 | 3.57
+--------+--------+--------+--------+--------+--------+-------
March-June | 9.02 | 3.15 | 3.30 | 8.3 | 9.0 | 5.91 | 6.73
July-September| 8.24 | 2.49 | 2.20 | 15.6 | 13.0 | 8.81 | 6.44