The recommendations in this section are using the RoI fertiliser classification system and are based on Teagasc research. Due to slight differences between the RoI and NI classification systems, these recommendations are only a guide for Northern Ireland farmers. They can be converted between the RoI and NI classification systems using this CONVERSION TABLE
Before choosing your fertiliser products please consult your local advisor to ensure that you do not exceed the limits for your farm as determined by the nitrates directive (SI no 378) of 2006.
|
| Table
50. Nutrient Requirements |
| Index |
N |
P |
K |
| 1 |
0 |
32 |
100 |
| 2 |
0 |
20 |
48 |
| 3 |
0 |
16 |
32 |
| 4 |
0 |
0 |
0 |
|
|
| -
- - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - |
|
Fertiliser
Recommendation
| Table
51. Application rate (bags/acre) |
| Index |
K1 Very Low |
K2 Low |
K3 Medium |
K4 High |
| P1 Very Low |
3 x (0-7-30)
+
1 x (Muriate of Potash 50%) |
3 x (0-10-20) |
1 x (0-7-30)
+
1½ x (16% Superphos) |
2 x (16% Superphos) |
| P2 Low |
2¾ x (0-7-30) |
2 x (0-10-20) |
2 x
(0-10-20) |
1¼
x (16% Superphos) |
| P3 Medium |
2 x (0-7-30)
+
1 x (Muriate of Potash 50%) |
2 x (0-7-30) |
1½ x (0-10-20) |
1 x (16% Superphos) |
| P4 High |
2 x (Muriate of Potash 50%) |
1 x (Muriate of Potash 50%) |
¾ x (Muriate of Potash 50%) |
0 |
|
|
| -
- - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - |
| Nitrogen is not required; pea crops produce their own Nitrogen from the soil. |
| A farmer is in a low fertility area (P1,K1).
The fertiliser regime will be 3 bags of
0:7:30 and 1 bag of 50% Muriate of potash. |
| A farmer is in a medium fertility area (P2,K2).
The fertiliser regime will be 2 bags of
0:10:20. |
| A farmer is in a good fertility area (P3,K3).
The fertiliser regime will be 1.5 bags of
0:10:20. |
|
|
|
