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.
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Grazing Page
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| Dairy: Low Stocking Rate
(0.6-0.75) LU/acre. For stocking rates below (0.6 LU/acre), reduce N, P & K levels by 0.8 units/acre.
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| Table
4. Nutrient Requirements (units/acre) |
| Index |
N |
P |
K |
| 1 Very Low |
88 |
20 |
64 |
| 2 Low |
88 |
12 |
40 |
| 3 Medium |
88 |
4 |
16 |
| 4 High |
88 |
0 |
0 |
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| Figures in the table above are applicable to farmers in Zone B.
Nitrogen levels given are guidelines only. The maximum application rates of nitrogen are: For farmers in
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Zone A, increase (N) to a max of 168.2 units/acre |
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Zone B, increase (N) to a max of 166.6 units/acre |
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Zone C, increase (N) to a max of 165.1 units/acre |
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Zone D, increase (N) to a max of 163.5 units/acre |
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| Phosphorous levels given are the maximum permitted levels.
For farmers in
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Zone A, increase max (P) limits by 0.8 units/acre |
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Zone C, decrease max (P) limits by 0.8 units/acre |
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Zone D, decrease max (P) limits by 1.6 units/acre |
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- - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - |
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Fertiliser Recommendation
| Table
5 Application
Rate (bags/acre) |
| Index |
K1 Very Low |
K2 Low |
K3 Medium |
K4 High |
| P1 Very Low |
1x (10-10-20)
+
3 x (Replenish)
+
1 x (Richland) |
3 x (18-6-12) |
²/3 x
(16% Superphos)
+
3.5 x (Richland) |
0.5 x
(16% Superphos)
+
3 (Richland) |
| P2 Low |
3 x
(Replenish)
+
1.5 x (24-2.5-10) |
2.5 x (Replenish)
+
2½ x (Richland) |
1 x
(Replenish)
+
2 x (Classic NP) |
3 x (Classic NP) |
| P3 Medium |
1.5 x (Replenish)
+
3 x (Classic NK) |
1.5 x (Replenish)
+
1.5 x (Classic NK) |
1.5 x (24-2.5-10) |
1 x (Classic NP) |
| P4 High |
4 x (Classic NK) |
3 x (Classic NK) |
1 x (Classic NK) |
No P or K Required |
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For all situations, apply C.A.N., Sweetgrass or Urea to satisfy the extra Nitrogen requirement as recommended by your advisor. |
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Richland: 22.7 - 2.5 - 5 + 3% Sulphur (S) + Copper (Cu), Manganese (Mn), Magnesium (Mg) and Zinc (Zn). This product is ideal for supplying N, P, K and essential trace elements for growing top quality grass and silage.
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Sweetgrass: 23% Nitrogen + 2% Sulphur + 1.2% Magnesium + 5% Sodium.
This product is especially formulated with the grass farmer in mind. The Sulphur and Magnesium will help to increase grass protein while the Sodium will encourage cows to graze grass tighter, thus leaving a lower post-grazing height and so making it an excellent grassland management tool. The Sodium will also improve cow dry matter intakes
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Where Sulphur (S) is required, choose a product from our product list
with similar N, P, K contents to the products recommended above, and apply. The Teagasc recommended level for grazing is 10-20 units/S/acre/per year. For more information on Sulphur go to Fertiliser index system page.
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