To download MANNER-NPK, existing registered PLANET users click here and new users click here to register.

What is MANNER-NPK ?

MANNER-NPK is a practical software tool that provides farmers and advisers with a quick estimate of crop available nitrogen, phosphate and potash supply from applications of organic manure. MANNER-NPK is applicable in England, Wales,Scotland and Northern Ireland

MANNER (MANure Nitrogen Evaluation Routine) version 3.0 was released in 2000. The new version of MANNER-NPK (due for release in early 2013) incorporates new research, improved usability and new features.

MANNER-NPK needs only a few simple inputs to run, which include;

  • Farm and field details, i.e. location, soil type, crop type.
  • Manure type and nutrient content. The results of laboratory analysis can be entered if available, or alternatively MANNER-NPK will use default nutrient analysis for the selected organic manure type.
  • Manure application details, i.e. application rate, application method and soil incorporation. Details of up to 3 manure applications to a single crop/field can be added

MANNER-NPK estimates the fate of organic manure N following land application, based on the latest research information on the mineralisation of manure organic N, and N losses via ammonia volatilisation, denitrification and nitrate leaching. The total N applied and an estimate of crop available N in the current cropping year and in the year following manure application is given.

MANNER-NPK also calculates the amount of total and available P2O5 and K2O applied, and the amount of total SO3 and MgO applied. The potential financial value of the manure application(s) in £/ha is calculated based on current fertiliser prices (which can be edited). MANNER-NPK generates a 1 page report summarising all input and output information, which can be saved or printed.

MANNER-NPK includes NVZ warning messages which highlight potential breaches of the NVZ rules specific to England, Wales, Scotland or Northern Ireland. A library of relevant guidance documents is included.

The MANNER-NPK calculation engine is incorporated into the PLANET software. Therefore results from MANNER-NPK are compatible with the output of PLANET and with guidance in Defra’s Fertiliser Manual (RB209)/ SAC Technical Note on the application of bulky organic fertilisers (TN622).

Who has developed MANNER-NPK

MANNER-NPK has been developed by ADAS with funding and support from AHDB (BPEX, DairyCo, EBLEX, HGCA, Potato Council), CSF, DARD, Defra, Environment Agency, Natural England, Scottish Government, Tried and Tested and WRAP.

How do I get a copy?

MANNER-NPK is available free of charge as a download from this site. To download MANNER-NPK , existing registered PLANET users click here and new users click here to register.

Cautionary note

The information supplied by the MANNER-NPK software is for guidance purposes only and is not intended to fully substitute for professional agricultural advice. The user is responsible for ensuring the accuracy and completeness of all data entered and used by MANNER-NPK , and for any commercial decisions taken based on any of the outputs from the MANNER-NPK software. Use of the MANNER-NPK software is subject to the terms and conditions of the MANNER-NPK User Licence. Use of the software implies that the user has accepted these conditions.