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Dernière mise à jour : Mai 2018

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cSyNE

cSyNE
Calculation of the indicators SyNE (System Nitrogen Efficiency), SyNB (System Nitrogen Balance) and RNE (Relative Nitrogen Efficiency)

This tool allows users to calculate three indicators simply:

  • SyNE - System Nitrogen Efficiency of a production system. It is based on the NUE (Nitrogen Use Efficiency) indicator and corrects some of the latter’s biases and shortfalls by including, among other things, changes in soil nitrogen and emissions due to production of farm inputs.
  • SyNB - System Nitrogen Balance of a production system
  • RNE - Relative Nitrogen Efficiency - it expresses a production system’s nitrogen use efficiency as a function of the maximum efficiency that the system’s type of agricultural production can achieve

The tool is available online at www.nefficiencycalculator.fr/en/. Those who wish to use it must create an account on the website.

We hope that this tool will be used by researchers, engineers at technical institutes, agricultural advisers and students in our courses.

The current version of the calculator works for farms producing field crops, forage crops and dairy cows. It is freely available, with all of the limits inherent in a research project.

See also