Variable N-Rate Application | Atfarm | Yara

Variable-rate application (VRA)

Atfarm allows farmers to create variable rate application maps for fertiliser application.
Atfarm uses automatically updated satellite information based on the N-Sensor algorithm, all in an easy-to-use platform. It is also possible to also adapt the application map according to individual needs and knowledge of a field.
For the analysis of satellite images, Atfarm combines an intuitive and easy-to-use platform with the N-Sensor algorithm, a technology developed by Yara using decades of field trials.

How does variable-rate application work?

Using Atfarm is simple – you only need to sign up online, add your farm and create fields then you're ready to get started.

You can create an application map in a few steps:

Choose the crop type, fertiliser and target N amount.
Generate an application card for working with the required information.
Export the file for your tractor’s monitor and you’re ready to go.

Do I need a variable-rate spreader?

Atfarm can be used even if you don't have a variable rate spreader by using the Atfarm mobile app which is available for both iPhone and Android phones.

This allows any farmer to variably apply nitrogen, even if they do not have a variable rate controller on their fertiliser spreader. This is possible by using the GPS location from the phone and manually adjusting the flow rate or forward speed (if this is possible without changing pto speed) based on the recommendation given by the app.

There will be some limitations depending on tractor and spreader capabilities but this should allow many more farmers to take advantage of variable rate spreading.

Atfarm supports your decisions through the season

Create a free Atfarm account and then get started with the N-tester BT, variable-rate fertilisation and remote crop monitoring.

Download Atfarm now for free

Let Atfarm help you optimise your nitrogen fertilisation, increase yields and save costs.

Monitor your fields and crops from anywhere.
Easily identify growth differences in the field to measure nitrogen absorption in the crop leaves for in-season nitrogen recommendations.
Share your maps with colleagues.