Atfarm - Crop biomass monitoring and Variable rate nitrogen

Atfarm is a digital tool to help farmers remotely monitor crop biomass and create variable rate nitrogen application maps with the aid of satellite imagery.

With the use of satellite images and Yara’s expertise in precision agriculture, every farmer can simply check the status of their crops and optimise the amount of nitrogen in top dressings to increase the crop’s yield.

Try Atfarm now for free !!

During 2020 season you can try Atfarm for free.*

Click here to Sign Up to Atfarm

What does Atfarm do?

Atfarm is a free online service that allows farmers to create biomass maps to identify variations in the biomass of crops even at any growth stage in any crop. 

Using Atfarm any farmer can create variable rate application maps for fertilisation using automatically updated satellite information based the N-Sensor index 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.

Crop biomass monitoring

Atfarm - Crop biomass monitoring and Variable rate nitrogen

Atfarm is a great tool to monitor the growth status of your crop. You can use the N-Sensor view to identify the growth evolution of your crop with new satellite pictures every five days. This allows scouting and monitoring of the crop from anywhere and can be accessed from smartphones and tablets using the mobile app or from traditional desktop view.

Atfarm helps you identify anomalies and where to turn your attention next, allowing you and your agronomist to identify areas where crop development is not going as expected and focus on areas of a field where an on the ground inspection is needed. 

Variable rate fertilisation

With variable rate fertilisation you can change the amount of fertiliser applied on different areas of a field. This way, you can increase the yield of your field up to 7%.

How does variable rate application work?

Using Atfarm is simple – you only need to sign up online and add your fields to check their biomass levels.

You can create an application map in few steps:

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

Do I need a variable rate spreader?

No- Atfarm can be used even if you don't have a variable rate spreader - Atfarm can be used via the Atfarm mobile app which is available for both iPhone and Android phones from the usual app stores.

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 recomendation 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.

Try Atfarm now for free !!

During 2020 season you can try Atfarm’ for free.*

Click here to Sign Up to Atfarm

* Please refer to FAQ's for details of free trial and cost of subscription

Atfarm demonstration

Watch a brief demonstration of Atfarm


Atfarm is an easy-to-use and intuitive tool that allows you to visualise biomass on your fields and create application maps to optimise your nitrogen fertilisation.

Atfarm and the N-Sensor complement each other. With the N-Sensor, the accuracy of the biomass measurement is better thanks to the sensors in the field and with Atfarm, you quickly have biomass maps updated several times a week.

In order to create an application map, first, choose the crop type that is planted on your field. Input all information and click on create application map. The application map is being created automatically for you based on Yara's N-Sensor algorithm.

Atfarm is free to use for biomass monitoring on unlimited fields and you can create a nitrogen application map for one field for free. To create unlimited nitrogen application maps you need to buy an annual subscription.

The cost of a year's subscription is currently (March 2020) £195 per year.

For more information visit Atfarm website

Atfarm is free to use for biomass monitoring and to create the first nitrogen application map, after this you need to buy an annual subscription which allows unlimited application maps.

The cost of a subscription is currently (March 2020) £195 per year.

For more information visit Atfarm website

Yes, it is possible to get an Atfarm subscription through the Yara Rewards scheme.

To find out more information simply sign up or login to Yara Rewards.

If you need to get in touch with the Atfarm team directly: