Organic gardeners make use of a number of different fertilisers. This table gives a typical analysis of their Nitrogen, Phosphorus and Potassium content, together with their speed of action.
| Type |
Action |
Nitrogen (N) |
Phosphorus (P) |
Potash (K) |
| Dried blood |
Quick |
9-13 |
0.80 |
- |
| Blood, fish & bone |
Medium |
5.1 |
5 |
6.5 |
| Bone meal |
Slow |
0.3-4.6 |
14.1-33.2 |
1.0 |
| Chicken compost, deep litter |
Medium |
0.80 |
0.55 |
0.48 |
| Comfrey compost |
|
0.77 |
0.29 |
0.92 |
| Cow dung, strawy |
|
0.54 |
0.31 |
0.67 |
| Cow dung, well-rotted |
|
0.59 |
0.45 |
0.49 |
| Farmyard manure |
Slow |
0.65 |
0.23 |
0.32 |
| Fish meal |
Quick |
6.3-8.9 |
6.0-8.9 |
1.0 |
| Guano |
Quick |
15 |
10 |
7 |
| Spent hops |
Slow |
4 |
2 |
|
| Hoof & horn meal |
Slow |
6.5-13.2 |
0.20 |
- |
| Kainit |
Slow |
|
|
13 |
| Mushroom compost |
|
0.80 |
0.63 |
0.67 |
| Rape meal |
Medium |
5 |
2 |
6 |
| Seaweed meal |
Medium |
2.88 |
0.22 |
2.29 |
| Seaweed, dried |
Slow |
2.88 |
0.22 |
2.29 |
| Urine-activated compost |
|
0.80 |
0.29 |
0.41 |
| Wool shoddy |
Slow |
12 |
|
|
©2004 Frann Leach. All rights reserved.
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