Organic manures |
- slurry
- poultry manures
- solid manures (eg farmyard manure, sludge cake or compost)
- sewage sludge (also called biosoids)
- other liquid manures (eg abattoir waste or anaerobic digestate)
Slurry is a liquid organic manure
that is produced by livestock (other than poultry) while in a yard or building.
It includes animal bedding and water that drains from areas where animals are
kept.
You must separate slurry into solid
and liquid parts using a machine on a waterproof surface where you can collect
the liquid that drains from it. If the solid that remains can be stacked in a
heap without leaking liquid, it can be treated as farmyard manure. If not, it's
still slurry. If there is leakage from a stack, you must collect this and treat
it as slurry.
You must follow this guidance if a
part or all of the farm buildings from which your slurry comes is within an
NVZ. You must also follow the guidance on the rules for using nitrogen
fertilisers in NVZs and storing silage, slurry and agricultural
fuel oil.
Storing
slurry and poultry manure
You must be able to store all the
slurry you produce and all poultry manure produced in a yard or building,
during the storage period, unless you reduce the volume by:
- sending it off your farm
- spreading some of it on fields with a low risk of runoff
The storage period runs from:
- 1 October to 1 April inclusive (6 months) for pigs and poultry
- 1 October to 1 March inclusive (5 months) for cattle, sheep, goats, deer and horses
In addition to storing the slurry
you produce, you must provide storage for any slurry, rainfall, washings or
other liquid that enters the store during the storage period.
For rainfall, average figures for
each month of the storage period can be used for the storage capacity
calculation. Use the Defra PLANET and MANNER NPK nutrient management tools to get
rainfall information for your postcode.
You may need to use a longer average
rainfall period for your calculation to make sure you comply with the closed
period and non-spreading conditions. For example, 6 and 7 months respectively
to cover wetter than average years and spatial rainfall differences within a
postcode area (eg height above sea level).
You may need a greater storage
volume if in some years you can't empty the store before the start of the
closed period.
You should allow for:
- all rainfall expected to enter the store during the storage period (rain falling directly into the store and washings from elsewhere, including contaminated yards)
- any water or other liquids that enter the store during the storage period
To find out how much manure your
animals will produce, you can use standard values tables (XSLM, 128KB )
or farm software like the MANNER NPK tool.
Using
low risk land
You can spread slurry or poultry
manure on fields that have a low risk of runoff, to reduce the amount of
storage capacity you need to provide.
If you do this, you must still
comply with the closed period for spreading slurry.
You'll also need to take account of
the limits on spreading slurry or poultry manure from the end of the closed
period until the end of February.
Land with a low risk of runoff:
- has an average slope of less than 3 degrees
- doesn't have land drains (other than a sealed pipe)
- is at least 50 metres from a watercourse or conduit leading to a watercourse (eg a ditch or working land drain)
You must provide storage facilities
for an additional 1 week's manure as a contingency measure in case you can't
spread on fields with a low risk of runoff on some days.
Storing
solid manures
You must store poultry manure, other
types of solid organic manure or animal bedding that contains organic manure in
one of the following ways:
- in a container
- on a waterproof base, where you can collect and store runoff
- in a roofed building
- in a temporary field heap
Locating
and constructing temporary field heaps
You must:
- make sure your field heap is at least 10 metres from any surface water (eg a river, pond or ditch) or land drain, or 30 metres if the land slopes at 12 degrees or more
- make sure the location of the field heap isn't liable to being waterlogged or flooded
- locate field heaps at least 50 metres from a spring well or borehole
- move the field heap at least every 12 months
- leave a 2 year gap before returning to the same site
- keep a record of the sites used for field heaps and the dates of use
You must show all the low risk areas
suitable for temporary field heaps on your risk map if you plan to use them.
Temporary field heaps must:
- be made from manure solid enough to be stacked in a freestanding heap
- not give rise to free drainage from within the stacked material
- be covered with a waterproof material if they contain poultry manure without bedding or litter
- occupy as small a surface area as is needed to support the weight of the heap without it collapsing
Constructing
or enlarging your storage facilities
If you're constructing new storage
for slurry, reconstructing part of a storage facility or enlarging your current
storage facilities, you must follow the rules on storing silage, slurry and
agricultural fuel oil.
Keeping
storage records
You must record:
- the capacity of the storage facilities on your farm (and update any changes to this within 1 week of the change)
- your calculation of the volume of manure that will be produced by the livestock you'll keep in a building or on hard standing during the storage period
- your calculation showing the amount of storage you need
- any changes in volume and storage capacity due to introducing livestock onto your farm for the first time (within 1 month of the change)
- your calculations to show how you've reduced your volume by sending slurry off your farm or spreading it on low-risk areas (if relevant)
By 30 April each year make a record
of:
- the numbers and type ('category' in the standard values tables (XSLM, 128KB ) ) of livestock you kept in buildings or on hard standing during the previous storage period
- the dates for the start and end of use and locations of any field sites you use for storing solid manure
You don't need to record the start
and end dates for your use of field sites separately if you record them on your
risk map.
You must keep these records for 5
years.
Contact the Farming Advice Service
for more information on using and storing nitrogen fertilizers and manures.
Telephone: 0345 345 1302 (Monday to
Friday, 8am to 6pm)
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