The Nutrient Action Programme Regulations (Northern Ireland) 2019 No. 81

SCHEDULES

Regulations 3(2) and 13(2)

SCHEDULE 3 Criteria as to nutrient management for phosphorus

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).

	Soil phosphorus index
(1) Subject to Table 2b.
	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 silage(1)	70	55	40	0	0	0
Hay(1)	55	43	30	0	0	0

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.

(1)

S.R. 2003 No. 493