# The Water Resources (Control of Agricultural Pollution) (Wales) Regulations 2021, Paragraph 9: Maximum phosphate limits by crop


(1) Subject to sub-paragraph (2), the total amount of phosphate spread on any crop listed in the first column of any of the tables below must not exceed the figure under the applicable soil phosphorus index number in the same table.
Table 2 - Maximum phosphate for grass
Soil Phospshorus index (kg P2O5/ha)
0
1
2
3
4+
At grass establishment
120
80
50
30
0
Grazing
80
50
20
0
0
Hay
80
55
30
0
0
Silage
First cut
100
70
40
20
0
Second Cut
25
25
25
0
0
Third Cut
15
15
15
0
0
Fourth Cut
10
10
10
0
0
Table 3 - Maximum phosphate for other crops
P-index
0
1
2
3
4
5+
(a)At P Index 4 and 5, up to 60 kg P2 O5/ha can be used as a starter fertiliser, close to the seed. The amount of phosphate applied as a starter dose, together with the amount added in the base dressing, should not exceed the amount of phosphate required to replace that removed by the previous crop.
Crop
Phosphate (kg/ha)
Forage crops
Forage maize
115
85
55
20
0
0
Wholecrop cereals
115
85
55
0
0
0
Forage swedes and turnips (lifted)
105
75
45
0
0
0
Fodder beet (lifted)
120
90
60
0
0
0
Forage rape, swedes and stubble turnips (grazed)
85
55
25
0
0
0
Kale (grazed)
80
50
20
0
0
0
Rye-grass sown for seed
90
60
30
0
0
0
Arable crops (Straw incorporated)
Winter wheat
110
80
50
0
0
0
Winter triticale
125
95
65
0
0
0
Winter Barley
110
80
50
0
0
0
Spring barley
105
75
45
0
0
0
Spring wheat/spring triticale/rye/oats
110
80
50
0
0
0
Arable crops (Straw removed)
Winter wheat
115
85
55
0
0
0
Winter triticale
130
100
70
0
0
0
Winter barley
115
85
55
0
0
0
Spring barley
105
75
45
0
0
0
Spring wheat
110
80
50
0
0
0
Spring triticale/rye
110
80
50
0
0
0
Oats
115
85
55
0
0
0
Oilseeds
Winter oilseed rape
110
80
50
0
0
0
Spring oilseed rape or linseed
90
60
30
0
0
0
Peas (dried and vining) and beans
100
70
40
0
0
0
Sugar Beet
110
80
50
0
0
0
Potatoes
250
210
170
100
0
0
Vegetables and bulbs
Asparagus (establishment)
175
150
125
100
75
0
Asparagus (subsequent years following establishment)
75
75
50
50
25
0
Brussels sprouts, storage cabbage, head cabbage and collards
200
150
100
50
0
0
Cauliflower and calabrese
200
150
100
50
0
0
Celery
250
200
150
100
50
0
Peas (market pick)
185
135
85
35
0
0
Broad beans, dwarf and runner beans
200
150
100
50
0
0
Radish and sweetcorn
175
125
75
25
0
0
Lettuce and wild rocket
250
200
150
100
60
60
Onions and leeks
200
150
100
50
60
60
Beetroot, swedes, turnips, parsnips and carrots
200
150
100
50
0
0
Bulbs and bulb flowers
200
150
100
50
0
0
Coriander and mint
175
125
75
25
0
0
Courgettes
175
125
75
25
0
0
Fruit and vines before planting
200
100
50
50
0
0
Hops before planting
250
175
125
100
50
0
Established top fruit
80
40
20
20
0
0
Blackcurrants, redcurrants, gooseberries, raspberries, loganberries, tayberries, Blackberries, strawberries and vines
110
70
40
40
0
0
Established Hops
250
200
150
100
50
0
(2) Spreading phosphate on grass and other crops above the values stipulated within the tables above is permitted subject to prior receipt of written advice from a person who is a member of the Fertiliser Advisers Certification and Training Scheme.

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Source: https://www.legislation.gov.uk/wsi/2021/77/schedule/1A/paragraph/9 (the official version)
Page: https://openlegislation.uk/water-resources-control-of-agricultural-pollution-wales-regulations-2021/schedule-1A/paragraph-9
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.