ops possess
of assimilating these ingredients._

_Amounts of Fertilising Ingredients removed from the Soil by different
Crops._

The most convenient way of instituting a comparison between the
requirements of the different crops in this respect is by calculating
the amount, in pounds, of nitrogen, phosphoric acid, and potash, which
average amounts of the different crops remove per acre. The following
table shows this for the common crops:--

FERTILISING INGREDIENTS REMOVED FROM SOIL.
----------------------------+-----------+------------+----------
| Nitrogen. | Phosphoric | Potash.
| | Acid. |
----------------------------+-----------+------------+----------
Mangels {Root, 22 tons | 87 | 36.4 | 222.8
{Leaf | 51 | 16.5 | 77.9
|-----------|------------|----------
Total crop | 138 | 52.9 | 300.7
|-----------+------------+----------
Turnips {Root, 17 tons | 63 | 22.4 | 108.6
{Leaf | 49 | 10.7 | 40.2
|-----------+------------+----------
Total crop | 112 | 33.1 | 148.8
|-----------+------------+----------
Beans {Grain, 30 bushels | 77 | 22.8 | 24.3
{Straw | 29 | 6.3 | 42.8
|-----------+------------+----------
Total crop | 106 | 29.1 | 67.1
|-----------+------------+----------
Red clover hay, 2 tons | 102 | 24.9 | 83.4
|-----------+------------+----------
Swedes {Root, 14 tons | 70 | 16.9 | 63.3
{Leaf | 28 | 4.8 | 16.4
|-----------+------------+----------
Total crop | 98 | 21.7 | 79.7
|-----------+------------+----------
Oats {Grain, 45 bushels | 38 | 13.0 | 9.1
{Straw | 17 | 6.4 | 37.0
|-----------+------------+----------
Total crop | 55 | 19.4 | 46.1
|-----------