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The Nutrient Action Programme Regulations (Northern Ireland) 2019
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Regulations 3(2) and 13(2)
SCHEDULE 3Criteria as to nutrient management for phosphorus
This schedule has no associated Explanatory Memorandum
Table 1
Phosphorus (as orthophosphate (P2O5)) limits for grassland on soils of different soil phosphorus index
| Soil phosphorus index | ||||||
|---|---|---|---|---|---|---|
(1) The amount of phosphate applied for establishment shall be deducted from the first season’s grazing, silage or hay crop requirement for phosphorus. | ||||||
| 0 | 1 | 2- | 2+ | 3 | 4 | |
| Phosphorus recommendation (kg P2O5 ha-1) | ||||||
| At grass establishment | 120 | 80 | 65 | 50 | 30 | 0 |
| Grazing(1) | 80 | 50 | 35 | 20 | 0 | 0 |
| Silage cut(1) | ||||||
| 1st | 100 | 70 | 55 | 40 | 20 | 0 |
| 2nd | 25 | 25 | 25 | 25 | 0 | 0 |
| 3rd | 15 | 15 | 15 | 15 | 0 | 0 |
| 4th | 10 | 10 | 10 | 10 | 0 | 0 |
| Hay(1) | 80 | 55 | 43 | 30 | 0 | 0 |
Table 2a
Maximum phosphate fertiliser application limits (kg P2O5 per hectare) for extensively managed grassland (under 60 kg chemical N/ha/year or under 120kg manure N/ha/year loading).
Table 2b
If silage or hay crops receive under 80 kg chemical fertiliser N/ha/year, the following maximum phosphate fertiliser application limits apply.
| Soil phosphorus index | ||||||
|---|---|---|---|---|---|---|
| 0 | 1 | 2- | 2+ | 3 | 4 | |
| First cut silage | 100 | 70 | 55 | 40 | 0 | 0 |
| Hay | 80 | 55 | 43 | 30 | 0 | 0 |
Table 3
Available phosphate (P2O5) values for fertilisers
| Liquid or slurry manure types | Dry matter content (%) | Soil phosphorus index of 0 or 1, available phosphorus (kg P2O5/m3)(1) | Soil phosphorus index of 2- or greater, available phosphorus (kg P2O5/m3) |
|---|---|---|---|
(1) For potatoes and vegetable crops, these availabilities should be used regardless of soil phosphorus index. | |||
(2) 50% phosphate availability assumed at soil phosphorus index of 0 or 1 and for potatoes and vegetables. | |||
(3) Figures in bold are the most common values. | |||
(4) 60% phosphate availability assumed at soil phosphorus index of 0 or 1 and for potatoes and vegetables. | |||
| Liquids(2) | |||
| Dirty water | 0.5 | 0.05 | 0.10 |
| Cattle slurries(2) | |||
| Cattle slurry(3) | 2 | 0.3 | 0.6 |
| 6 | 0.6 | 1.2 | |
| 10 | 0.9 | 1.8 | |
| Separated cattle slurries (liquid portion)(2) | |||
| Strainer box | 1.5 | 0.15 | 0.3 |
| Weeping wall | 3 | 0.25 | 0.5 |
| Mechanical separator | 4 | 0.6 | 1.2 |
| Pig slurries(2) | |||
| Pig slurry(3) | 2 | 0.5 | 1.0 |
| 4 | 0.9 | 1.8 | |
| 6 | 1.3 | 2.6 | |
| Separated pig slurry (liquid portion) | 3 | 0.8 | 1.6 |
| Solid manure types | Dry matter content (%) | Soil phosphorus index of 0 or 1, available phosphate (kg P2O5/t) | Soil phosphorus of 2- or greater, available phosphate (kg P2O5/t) |
| Poultry manures(4) | |||
| Broiler litter | 66 | 9.6 | 16 |
| Layer manure | 30 | 7.8 | 13 |
| Turkey litter | 60 | 15 | 25 |
| Duck manure | 25 | 3.3 | 5.5 |
| Farmyard manures(4) | |||
| Cattle manures | 25 | 1.9 | 3.2 |
| Sheep manures | 25 | 1.9 | 3.2 |
| Goat manure | 25 | 1.7 | 2.8 |
| Pig manure | 25 | 3.6 | 6.0 |
| Horse manure | 30 | 3.0 | 5.0 |
| Miscellaneous manures(2) | |||
| Spent mushroom compost | 35 | 1.7 | 3.4 |
| Separated cattle slurry (solid portion) | 20 | 1.0 | 2.0 |
| Separated pig slurry (solid portion) | 20 | 2.3 | 4.6 |
| Other organic manures | Dry matter content and total phosphorus content to be declared in accordance with the Waste Management Licencing Regulations (Northern Ireland) 2003(1). 60% phosphate availability assumed at soil phosphorus index or 0 or 1(1), 100% phosphate availability assumed at soil phosphorus index greater than 1. | ||
| Chemical fertilisers | Dry matter content and total phosphorus content as certified by the producer. Phosphate availability assumed to be 100% for all soil phosphate indices. | ||
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