Call for papers - Rencontres Comifer Gemas 2023

Deadline for subscription : 16th December, 2022

You want to participate in the 16th Rencontres Comifer-Gemas 2023 > Download the call for papers 


16th rational fertilisation and analysis congress - Rencontres Comifer-Gemas
November 21-22, 2023 - Tours, west of France  

Comifer (the French comittee for the study and development of rational fertilisation) and Gemas (an association that brings together more than 30 French agro-environmental analysis laboratories) organize on 21 et 22 November 21-22, 2023 the 16th rational fertilisation and analysis congress at the palais des congrès in Tours - France.

Annonce comifer 2020



The 16th rational fertilisation and analysis congress - Rencontres Comifer-Gemas - organized by Comifer (French Committee for the Study and Development of Reasoned Fertilisation) and Gemas, (Group of methodological studies for soil analysis) give appointment on November 21-22, 2023 in Tours, to all fertilisation professionals to update their knowledge and know-how in terms of innovations, technical references, scientific research and results, regulatory information and territorial projects. 

This edition of the 30th « Rencontres Comifer-Gemas » will once again be an opportunity to bring together all actors concerned by the rational fertilisation and soil fertility (research, development, education, industry, trade, services) and to share knowledge, feedback from field experience and recent results. 

Beyong the sharing of scientific information, it will also be part of a national and international context which has been trying for two years to reconcile management of the shortage of fertilising materials, resilient agriculture and food sovereignty, issues climatic and environnemental.

Rencontres Comifer-Gemas 2023 will open the debate on the concrete solutions mobilized by the whole agricultural sector through its research, development of innovative and virtuous agricultural practices and field experience.


Call for papers for the 16th Rencontres Comifer-Gemas 2023 is open to…

  • All subjects related to soil fertility, management of nutrient cycles, optimization of the use of fertilisers, decarbonization, carbon storage, adaptation of agronomic practices at the scale of production systems, biological indicators, analysis etc.   
  • The programme will shed light on the solutions mobilized in terms of soil fertility management in a context of tight supply of both mineral and organic fertilizers. 
    Geopolitical issues, feedback, perspectives … what optimisation of fertilisation ? What alternatives and future prospects for the supply of mineral and organic fertilizers? What other solutions?  


You contribute to the advancement of knowledge through your agronomic research work, supported by technical references, scientific results, so let us kwow! 

By emailing your communication proposal before December 16, 2022 to 

Communications may take the form of a 15-minute oral  intervention (15 minutes of presentations + 10 minutes of questions/answers) or a poster. 

The organizing comittee will confirm its decisions by the end of January 2023. 
The proceeding ot the 16th Rencontres Comifer-Gemas 2023  will be online at the end of November 2023.


Come and meet us on 21 and 22 November 2023  to take stock of the progress of the fertilisation sector and its abality to meet the challenges of the moment


Organizing comittee - 16th Rencontres Comifer-Gemas 2023

  • Lionel Jordan-Meille - Bordeaux Science Agro - President of Comifer
  • François Servain - Ldar - President of Gemas
  • Sophie Agasse - Unifa
  • Pascal Denoroy - Inrae 
  • Sophie Droisier - Comifer
  • Bruno Félix-faure - Eurofins-Galys
  • Marc Lambert - Yara
  • Christine Le Souder - Arvalis-Institut du végétal
  • Pascal Mathieu - Laboratoire César
  • Aurélia Michaud - Inrae
  • Bernard Verbeque 

For more information, please contact Sophie Droisier :




Tags: COMIFER, rencontres, Gemas, fertilisation , Fertilisation raisonnée, Analyse du sol, Azote, Phosphore, Potassium, Fertilité, Evenements, Amendements, Sol, Programme, biostimulants, nutriments, engrais mineraux, engrais organiques