# The Nutrient Action Programme Regulations (Northern Ireland) 2019, Schedule 3: Criteria as to nutrient management for phosphorus

Extent: N.I.

Table 1
Phosphorus (as orthophosphate (P2O5)) limits for grassland on soils of different 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.
Soil phosphorus index
0
1
2-
2+
3
4
Phosphorus recommendation (kg P2O5 ha-1)
At grass establishment
120
80
65
50
30
0
Grazing1
80
50
35
20
0
0
Silage cut1
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
Hay1
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).
1 Subject to Table 2b.
Soil phosphorus index
0
1
2-
2+
3
4
At grass establishment
80
65
50
30
0
0
Grazed grass (whole season)
50
35
20
0
0
0
First cut silage1
70
55
40
0
0
0
Hay1
55
43
30
0
0
0
Table 2b
If silage or hay crops receive over 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
1 For potatoes and vegetable crops, these availabilities should be used regardless of soil phosphorus index.
2 50% of phosphate availability assumed at soil phosphorus index of 0 or 1 and for potatoes and vegetables.
3 Figures in bold are most common values.
4 60% phosphate availability assumed at soil phosphorus index of 0 or 1 and for potatoes and vegetables.
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)
Liquids2
Dirty water
0.5
0.05
0.10
Cattle slurries2
Cattle slurry3
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 slurries2
Pig slurry3
2
0.4
0.8
4
0.75
1.5
6
1.1
2.2
Separated pig slurry (liquid portion)
3
0.55
1.1
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 manures4
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 manures4
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 manures2
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 . 60% phosphate availability assumed at soil phosphorus index or 0 or 11, 100% phosphate availability assumed at soil phosphorus index greater than 1. For anaerobic digestate the record of nutrient content analysis as required by regulation 12(1) shall be used.
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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Source: https://www.legislation.gov.uk/nisr/2019/81/schedule/3 (the official version)
Page: https://openlegislation.uk/nutrient-action-programme-regulations-northern-ireland-2019/schedule-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.