ARCHIVE: Fertiliser Manual (RB209)

Poultry manures – total and avilable nutrients

(Information for duck manure is given on page 62)

Nitrogen – typical total and readily available nitrogen content (fresh weight basis)

 

Dry matter %

Total nitrogen (kg N/t)

Readily available
nitrogen (kg N/t)

Layer manure

35

19

9.5

Broiler/turkey litter

60

30

10.5

To convert kg/t to units/ton, multiply by 2.

Percentage of total nitrogen available to next crop following POULTRY MANURE applications (% of total nitrogen)  

 

Autumna (Aug-Oct, 450 mm rainfall to end of March) 

Wintera (Nov-Jan, 250 mm rainfall to end of March) 

Springa (Feb-April)

Summera use on grassland

 

Sandy / shallowb

Medium / heavyb

Sandy / shallowb

Medium / heavyb

All soils

All soils

Surface applied (i.e. not soil incorporated)            
Layer manure

10 [15]

25 [30]

25

25

35

35

Broiler/turkey litter

10 [15]

 25 [30]

 20

 25

 30

 30

Soil incorporated 24 hrs after applicationc            
Layer manure

 10 [15]

 35 [40]

 25

 40

 50

 N/A

Broiler/turkey litter

10 [15]

30 [35]

20

30

40

N/A

[use for grassland and winter oilseed rape cropping]
N/A = Not available

a. The nitrogen availability estimates assume 450 mm of rainfall (after autumn application) and 250 mm (after winter application) up to the end of soil drainage (end March). Where rainfall differs from these amounts, intermediate values of nitrogen availability should be used. For spring or summer applications, rainfall is not likely to cause movement of agronomically important amounts of nitrogen to below crop rooting depth.
b. Sandy/shallow = light sand soils and shallow soils (see Appendix 1).
Medium/heavy = medium, deep fertile silt and deep clay soils. Use this category for organic and peaty soils.
c. The values assume incorporation by ploughing. Cultivation using discs or tines is less effective in minimising ammonia losses and intermediate values of nitrogen availability should be used.

Phosphate, potash, magnesium and sulphur (fresh weight basis)

 

DM (%)

Phosphate

Potasha

Total
S

Total Mg

   

Total
phosphate kg P2O5/t

Availability %

Available
phosphate kg P2O5/t

Total
potash kg K2O/t

Availability %

Available
potash kg K2O/t

kg SO3/t

kg MgO/t

Layer manure

35

14

60

8.4

9.5

90

8.6

4.0

2.6

Broiler
/turkey litter

60

25

60

15

18

90

16.2

8.0

4.4

ND = No data
a. Values of potash may be lower for FYM stored for long periods in the open.
To convert kg/t to units/ton, multiply by 2.

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