Variable-rate application (VRA) maps
An application map that controls the rate in the field
Nirby prepares a variable-rate map as ISOXML or Shapefile, ready for a compatible ISOBUS terminal. The machine changes rate by zone, and you can record the completed treatment in the field history.
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ISOXML and Shapefile
Formats supported by compatible ISOBUS terminals.
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Fertiliser, seed and sprays
Application maps for fertilisation, sowing and crop protection.
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From the fertiliser plan
The map comes from the zone plan, with no manual drawing.
How variable-rate maps work
The finished application map goes to the machine terminal.
The machine changes the rate across the field according to the map prepared in Nirby.
VRA map features
Variable-rate maps from zone to terminal.
Precision fertilisation in Nirby links zones, soil results, the fertiliser plan and export to the machine.
Map from the fertiliser plan
Zone rates turned into an application map in one click.
ISOXML export
The ISOBUS standard supported by terminals from many makers.
Shapefile export
A universal format for terminals and software that do not read ISOXML.
Fertiliser, seed and sprays
Application maps for fertilisation, sowing and crop protection.
Yield maps
Digital harvest maps help assess the effect of variable rates.
Treatment in the field history
Record the completed treatment in Nirby, so the whole process stays documented.
Related Nirby features
Everything works together across the whole farm.
Nirby is one farm management system. Data entered in one place is available straight away in every other module.
Farm management software pricing
Start with the essentials. Add only what you need.
Nirby’s core platform is free. Add paid modules to match the way your farm operates, and pay only for the functionality you actually use.
Field Management
- Digital field records (field cards)
- Land parcel and subsidy parcel management
- Field and parcel grouping
Field Analysis
- Crop monitoring
- 7-day hourly weather forecast
Farm Resources
- Inventory tracking
- Employee list
- Livestock register
- Machinery and equipment register
Mobile app for agronomists
- Satellite monitoring preview
- Field work notes
- Inventory access
Farm Management
- Crop rotation planning
- Fertiliser plans (Nitrates Directive / eco-schemes)
- Field operation planning
- Digital crop protection records
- Completed field operations register
- Season financial summary
Operator work management
- Operator scheduling
- Job card analysis (operator reports)
- Machinery management (telemetry data)
Mobile app for operators
- Completed field operations register
- Operator time tracking (job cards)
Satellite crop monitoring
- Crop condition
- Chlorophyll and high biomass
Stable management zones
- Productivity zones
- Topographic terrain map
Soil testing
- Satellite-based sampling zones
- Soil test processing and visualisation
Machine files
- Digital harvest maps
- Precision fertiliser plans
- Application maps (seed / fertiliser / crop protection)
Planet crop monitoring
- Crop condition
- Emergence and early vigor
- Chlorophyll and high biomass
Satellite moisture monitoring
- Plant water stress
- Soil surface moisture
Stable management zones
- Productivity zones
Offer: your first year of Nirby free
Get one year of platform access worth PLN 240 at no cost
Variable-rate maps are in the precision agriculture module. Your first year is free, up to PLN 240.
Start for freeha with:
Core, Farm Management, and Precision Agriculture
Choose modules| Standard annual price24 PLN / ha / year × 10 ha | |
|---|---|
| Offer: first year free, up to PLN 240 | − |
| Your first-year total |
FAQ: variable-rate (VRA) maps
Frequently asked questions about variable-rate maps
What is a variable-rate (VRA) map?
A file that tells the machine what rate to apply in each part of the field, so fertiliser, seed or spray goes where it is needed in the right amount.
How are variable-rate maps made in Nirby?
From soil results, nutrient zones and the fertiliser plan. Different parts of the field get different rates, so fertilisation matches real differences within the field.
How do I load a VRA map onto a machine?
Export the application map from Nirby as ISOXML or Shapefile and load it onto a compatible ISOBUS terminal, for example from a USB stick.
Which application map formats does Nirby support?
ISOXML and Shapefile. ISOXML is the ISOBUS standard; Shapefile is supported by many terminals and farm programs.
Do VRA maps work for sowing and spraying?
Yes. Nirby prepares application maps for fertiliser, seed and plant protection products.
Do I need a special machine for variable rates?
You need a machine with rate control and a terminal that reads ISOXML or Shapefile application maps. Most modern ISOBUS spreaders, drills and sprayers can do it.
How much do variable-rate maps cost?
Application maps are in the precision agriculture module, billed per hectare per year. Your first year worth up to PLN 240 is free.
For advisers, laboratories and distributors
Do you work with farmers? Let’s build something together.
Nirby can connect farmers, advisers, laboratories, distributors and crop buyers around the same data. Tell us how you work and we’ll suggest a practical partnership model.
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Distributors & advisers
Fertilisers, crop protection, seed and machineryAdd fertiliser plans, application maps and crop monitoring to your offer. Advisers can work from the same field data as the farmer and discuss specific management zones instead of relying on whole-field averages.
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Soil sampling companies
Laboratories and field crewsWe define sampling zones from satellite imagery and turn lab results into nutrient maps and precision fertiliser plans. You collect the samples; the farmer receives clear recommendations and machine-ready files.
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Agri-food supply chain
Processors, crop buyers and producer groupsBring supplier field-operation and crop-protection records into one digital standard. That makes crop traceability, reporting and contract-growing programmes easier to manage.
