PRF1: Variable rate application of nutrients

What you must do to get paid for this action and advice on how to do it.

This is an action in the Sustainable Farming Incentive (SFI) scheme: expanded offer for 2024. You must read the SFI scheme information to understand the scheme rules and how to apply.

顿耻谤补迟颈辞苍听

3 years

How much you鈥檒l be paid聽

拢27 per hectare (ha) per year

Action鈥檚 aim聽

This action鈥檚 aim is that precision farming equipment is used to apply all major nutrients:

  • at a variable rate, which means the nutrient application rate is automatically varied
  • to match the nutrient needs of crops on different areas of land

The purpose of this is to:

  • reduce over-application of nutrients
  • improve yields from more consistent crop growth and quality
  • improve water and air quality

Where you can do this action

You can do this action on agricultural land located below the moorland line that鈥檚:

  • receiving applications of at least one major nutrient (nitrogen (N), phosphorus (P), potassium (K) and magnesium (Mg)) at a rate typically above 100 kilograms (kg) N per ha, 40kg P per ha and 40kg K per ha, per year
  • an eligible land type (as defined in section 5.1 鈥楨ligible land types for SFI鈥� in the SFI scheme information)
  • registered with an eligible land cover on your digital maps
  • declared with a land use code which is compatible with the eligible land cover

Eligible land

Eligible land type Eligible land cover Compatible land use code
Arable land used to grow crops Arable land Land use codes for arable crops or leguminous and nitrogen-fixing crops
Temporary grassland Arable land TG01
Arable land lying fallow Arable land FA01
Improved permanent grassland Permanent grassland PG01
Horticultural permanent crops Permanent crops TC01

Eligibility of protected land

Land or features with protection Eligibility
Sites of special scientific interest (SSSIs) Eligible 鈥� you must get SSSI consent before you do this action (read section 10.3鈥�SSSI 肠辞苍蝉别苍迟鈥� in the SFI scheme information to find out how to do this)
Historic and archaeological features Eligible 鈥� you must get a SFI HEFER before you do this action (read section 5.6鈥楲and with historic or archaeological features鈥� in the SFI scheme information to find out how to do this)

Available area you can enter into this action

Total or part of the available area in a land parcel.

Rotational or static action聽

This action is rotational or static. This means you can either:

  • move its location for the second and third years of this action鈥檚 duration
  • do it at the same location each year of this action鈥檚 duration

What to do

You must apply all major nutrients across the land entered into this action using variable rate application (VRA) equipment.

The VRA equipment must be either:

  • pre-programmed with a 鈥榲ariable rate file鈥� using data from zonal soil or crop testing and analysis or remote sensing
  • linked to a tractor or sprayer mounted crop reflectance sensor

You must make sure the VRA equipment automatically varies the application rate of the major nutrients in a way that can reasonably be expected to achieve this action鈥檚 aim.鈥赌�

For the purposes of this action, major nutrients include nitrogen (N), phosphorus (P), potassium (K) and magnesium (Mg), as relevant, contained in:鈥赌�

  • manufactured fertilisers 鈥� solid or liquid鈥�
  • solid manures 鈥� such as farmyard manure, poultry litter, sewage sludge or biosolids鈥�
  • slurry or digestate,鈥痠ncluding separated liquid鈥赌�

You do not need to use VRA equipment to apply:

  • micro-nutrients, such as boron or sulphur
  • lime, because is not a nutrient 鈥� it helps to increase the availability of major nutrients and controls soil acidity (pH)

鈥榋onal鈥� soil testing means you divide land parcels into soil management zones and take soil samples within each zone.

The data from zonal soil testing and analysis must cover a minimum of P, K, Mg and pH. You can use existing zonal soil testing analysis if it:

  • meets this action鈥檚 requirements
  • is less than 5 years old

When to do it聽

You must do this action from its start date, throughout each year of its 3-year duration.

How to do it聽

It鈥檚 up to you how you do this action, as long as you:

  • follow this action鈥檚 requirements 鈥� these are identified by a 鈥榤ust鈥�
  • do the action in a way that could reasonably be expected to achieve this action鈥檚 aim

You may find it helpful to read the 鈥榓dvice to help you do this action鈥�, but it鈥檚 not part of this action鈥檚 requirements.

Evidence to keep聽

You must keep evidence to show what you鈥檝e done to complete this action, such as:

  • invoices for zonal soil testing and analysis
  • the 鈥榲ariable rate file鈥� uploaded to the VRA equipment
  • an 鈥榓s applied鈥� VRA record at a land parcel level
  • field operations at a land parcel level and associated invoices
  • contractor鈥檚 invoice if you use a contractor to do this action

If it鈥檚 not clear that you鈥檝e done this action in a way that could reasonably be expected to achieve its aim, we may ask for this evidence. You must supply the evidence if we ask for it.

Other actions or options you can do on the same area as this action聽

You can do the following actions or options on the same area in a land parcel as this action.

Some actions or options can only be done on the same area if they鈥檙e done at a different time of year to this action. For example, winter cover followed by a summer companion crop. Read 鈥榃hat to do鈥� and 鈥榃hen to do it鈥� to find out when this action must be done.

Scheme Action or option codes
SFI 2024 actions AHW1, AHW5, AHW6, AHW7, AHW8, AHW10, AHW11, OFA1, OFA6, OFC1, OFC3, OFC4, OFC5, OFM1, OFM4, OFM5, OFM6, SOH4, WBD4, WBD5, WBD6, WBD7, WBD8, AGF1, AGF2, PRF2, PRF3, PRF4, SOH1, SOH2, SOH3, CAHL2, CIGL2, CIPM1, CIPM3, CIPM4, CNUM1, CNUM2, CSAM1, CSAM2, CSAM3
SFI 2023 actions AHL2, IGL2, IPM1, IPM3, IPM4, NUM1, NUM2, SAM1, SAM2, SAM3
CS options AB1, AB2, AB5, AB6, AB7, AB8, AB9, AB11, AB13, AB14, AB15, AB16, GS3, GS4, HS2, HS3, HS9, SW5, SW6, SW7, SW8, SW9, SW10, SW12, SW13, OP1, OP2, OP4, OP5, OR1, OR3, OR4, OR5, OT1, OT3, OT4, OT5
ES options No ES revenue options
SFI pilot standards SFI pilot arable and horticultural soil standard 鈥� all levels
SFI pilot arable and horticultural land standard 鈥� introductory and intermediate levels
SFI pilot improved grassland standard 鈥� introductory and intermediate levels
SFI pilot improved grassland soils standard 鈥� all levels

If an action or option cannot be located on the same area, you may be able to do it on a different area in the same land parcel. Read section 6 鈥楨ligible land in other funding schemes鈥� in the SFI scheme information for more details.

You can do the following actions or options on the eligible boundaries of a land parcel entered into this action:

  • SFI 2024 actions: CHRW1, CHRW2, CHRW3, BND1, BND2 and WBD2
  • SFI 2023 actions: HRW1, HRW2, HRW3
  • CS option BE3 (management of hedgerows)
  • the introductory level of the SFI pilot hedgerows standard

Advice to help you do this action聽

The following advice may help you to do this action, but it鈥檚 not part of this action鈥檚 requirements.

How to carry out 鈥榸onal鈥� soil testing

To carry out zonal soil testing, you can divide land parcels into soil management zones by using:

  • a grid to identify 1ha areas, and take soil samples from each 1ha area
  • soil scanning to map different areas, and take representative soil samples in each area (usually a minimum of around one per 3ha in each area)

Where possible, avoid taking soil samples on any area of land with historic or archaeological features identified on your鈥�SFI鈥赌�HEFER. If you need to take soil samples, read section 5.6 鈥楲and with historic or archaeological features鈥� in the SFI scheme information before doing so.

How to apply nitrogen using VRA equipment

To apply nitrogen (N), you can use VRA equipment that鈥檚 either:

  • pre-programmed with a 鈥榲ariable rate file鈥� using data from crop testing and analysis or remote sensing of crop reflectance 鈥� remote sensing will usually need to be carried out no more than around 14 days before the application of N to reasonably achieve this action鈥檚 aim
  • linked to a tractor or sprayer mounted crop reflectance sensor which varies the application rate in real time

Updates to this page

Published 21 May 2024
Last updated 5 August 2024 show all updates
  1. Action鈥檚 aim - added 鈥榤ajor鈥�, as this action applies to all major nutrients. Where you can do this action - land needs to be receiving applications of at least one major nutrient (nitrogen (N), phosphorus (P), potassium (K) and magnesium (Mg)) at a rate typically above 100 kilograms (kg) N per ha, 40kg P per ha and 40kg K per ha per year鈥�. This replaces 鈥榤ore than 12 tonnes of cattle farmyard manure (or equivalent amounts of available nutrients)鈥�. An eligible land type is defined in section 5.1 鈥楨ligible land types for SFI鈥� in the SFI scheme information. Eligibility of protected land - updated link to section 10.3 鈥楽SSI 肠辞苍蝉别苍迟鈥� in the SFI scheme information. What to do - updated wording to make it clear this action applies to all major nutrients (N, P, K and Mg, as relevant). You do not need to use VRA equipment to apply: - micro-nutrients, such as boron or sulphur - lime, because is not a nutrient 鈥� it helps to increase the availability of major nutrients and controls soil acidity (pH) You can use existing zonal testing analysis if it meets this action鈥檚 requirements and it鈥檚 less than 5 years old. Evidence to keep - the 鈥榓s applied鈥� VRA record needs to be at a land parcel level. Published voluntary advice to help you do this action, but it's not part of this action鈥檚 requirements.

  2. First published.