Manure calculator for Dutch dairy farms
Put your manure where the crop needs it, not just where the rules allow it.
Most manure plans are built to fill the legal limit, field by field, at the same rate. The SoilBeat manure calculator plans every slurry and manure source per field and per cut, shows what each field still needs, and keeps your nitrogen within the legal limits as you plan.
€100 per year · add-on for Farmer Pro and Advisor · built with GroeiBalans, co-funded by the European Union
The usual manure plan
Why the usual manure plan costs more than it should
Most plans start from the legal limit and work backwards. That answers “how much may I spread?”, not “where does it do the most good?”.
The same rate on every field
Fields differ in soil, crop and history. Spreading one rate everywhere over-supplies some fields and leaves others short.
Nitrogen gets all the attention
Plans are built around the nitrogen and phosphate limits. Shortages in potassium, sulfur or calcium only show up later, in yield or silage quality.
Paying twice for nutrients
When nobody calculates what the manure already supplies, the top-up fertilizer often buys nutrients the field already has.
A spreadsheet per farm
For agronomists, every plan is rebuilt by hand. A new manure analysis or an extra cut means starting again, and checking the legal room per cut takes hours.
Manure is your largest fertilizer source. Planned per field and per cut, it covers most of what the grass needs, and what’s left to buy is small and specific.
How it works
From field needs to a manure plan and calendar in six steps
Set up your fields
Your management zones load automatically. Add soil type, planned crop, a soil biology score and the soil analysis to use, or none.
Calculate what each field needs
Soil balance plus crop uptake from the expected yield, minus nitrogen from soil biology and clover or cover crops. The agronomist can adjust each field.
Enter your manure sources
Slurry, thin fraction, solid manure and more, with your own analysis. Set the number of grass cuts, an autumn application, or application moments for arable land.
Distribute the manure
The calculator divides each source over fields and cuts, based on need, composition, nutrient availability and the stock you have. The agronomist reviews the result.
See what’s missing and your legal room
Per field, cut and nutrient you see what is still needed, and your nitrogen use against the legal limits, cut by cut.
Top up and plan
Get a top-up proposal from your own products, or build it by hand. Everything lands in one calendar per field and cut, ready to export as PDF or CSV.
The numbers come from a fixed calculation model, not from AI. Pulse AI can explain the plan and compare alternatives, and the agronomist approves the final plan.
What it gives you
Better use of manure, less fertilizer to buy
For dairy farmers
One clear plan per field and per cut: which manure, how much, what to top up and when. You see your remaining legal nitrogen room before each application, and you buy only the fertilizer the fields still need.
For agronomists
Build a full manure and fertilizer plan for every client from one model, instead of a spreadsheet per farm. Change the number of cuts or a manure analysis and the plan recalculates. Your own adjustments stay visible.
Built with GroeiBalans. Co-funded by the European Union.
The manure calculator was developed with GroeiBalans, agronomists with years of experience advising Dutch dairy and arable farms, as part of the EIP Digitalisering project. Their advisory practice is built into the calculation model.
Co-funded by the European Union — EIP Digitisation, funded through the National Strategic Plan (NSP) and the European Agricultural Fund for Rural Development (EAFRD). Application number 24574000153.
About the EIP project€100 per year, one payment
The manure calculator is an add-on for Farmer Pro (€449 per year) and Advisor (€995 per year) licenses. Book a demo with your own farm data, or compare plans first.
Questions about SoilBeat
What should I know before starting?
Who is the manure calculator for?
For dairy farmers in the Netherlands and the agronomists who advise them. It plans grassland per cut and maize, and can also use application moments for arable land. Explore SoilBeat for dairy.
Can I use my own manure analysis?
Yes. SoilBeat starts with a standard profile for each manure source, and you replace it with your own analysis: nitrogen, ammonium nitrogen, organic nitrogen, phosphate, potash, sulfur, magnesium, sodium and calcium. Check supported lab reports.
Does it check the legal manure limits?
It shows, cut by cut, the nitrogen from animal manure against the 170 kg N per hectare limit, and total effective nitrogen against the norm for the crop and soil type. It is a planning aid: you remain responsible for your official manure administration. Talk to us about your farm.
Is the plan calculated by AI?
No. Quantities, distribution and top-up are calculated by a fixed calculation model. Pulse AI can explain the plan and answer what-if questions, and the agronomist adjusts and approves the final plan. Explore agronomic intelligence.
Do I need a soil analysis for every field?
No. For each field you choose one soil analysis, or none. With an analysis, the soil balance is part of the calculation; without one, the plan is based mainly on crop needs, expected yield and nitrogen credits. Compare soil, tissue and sap analysis.
What does it cost?
€100 per year, paid once a year. The manure calculator is an add-on for Farmer Pro (€449 per year) and Advisor (€995 per year) licenses. See all plans.
What do I get at the end?
A complete plan as PDF with needs, manure, remaining needs, top-up products and calendar per field; the planning as CSV; and the full calculation data. Approved applications become activities in SoilBeat. See how advice becomes tasks.
Related pages
Explore more
SoilBeat for dairy and forage
Soil, manure and silage reports in one place for better forage decisions.
Fertilizer recommendation software
What to look for in software for fertilizer plans, and how SoilBeat does it.
SoilBeat for agronomists
Better recommendations with less admin, using your own methods.
Soil balance calculator
Build a costed fertilizer plan from your soil test, crop needs and nitrogen credits.
Plan next season’s manure per field and per cut.
Book a 30-minute demo and bring your fields and manure analyses.