Rémi Vezy

Researcher in plant modelling and digital twins @UmrAmap.

Rémi Vezy

About

I specialize in plant growth modeling, predicting plant development and yield based on genotype, environment, and management (G×E×M). My work bridges ecophysiology, agronomy, and computational modeling to better understand plant function and architecture.

A key focus of my research is digital twins —virtual models that replicate real plant systems to test hypotheses, predict responses, and optimize management strategies. By integrating high-resolution data acquisition (lidar, gas exchanges...) with cutting-edge modeling frameworks, I aim to make simulations both realistic and actionable.

Driven by a passion for sustainability and technology, I develop tools that enhance resource efficiency, improve yield, and strengthen resilience, ensuring that research translates into tangible benefits for growers and stakeholders.

Work Experience

CIRAD
Permanent position

2018 - Present

Researcher in functional-structural plant modelling

I develop models to simulate the development, growth and yield of plants in response to environmental conditions and management practices. I mostly use Julia nowadays, but still develop some software in R and Fortran. I am currently working on oil palm, cacao, sahelian agroforestry systems, and intercrops.

INRAE
Postdoc position

2018 - 2018

Postdoc in crop modelling

My role was to improve the intercrop version of the STICS soil-crop model using a comprehensive database from INRAE Toulouse. The model is in FORTRAN, and I developed an R interface called SticRs, one of the precursor of SticsRPacks.

INRAE
PhD

2014 - 2017

Doctorate in environmental physics

Simulation of alternative management practices for the adaptation of perennial plantations to global changes. I developed DynACof, the Dynamic Agroforestry Coffee Crop Model (see Vezy et al. 2020). The model is in R and Julia. I also helped improve the MAESPA model, a 3D biophysical model for plant canopies, with improvements on the computation of the energy balance (see Vezy et al. 2018).

Education

Bordeaux University

2014 - 2017
Doctorate in environmental physics: Simulation of alternative management practices for the adaptation of perennial plantations to global changes

Skills

Functional-structural plant modelling
Plant physiology
Agronomy
Plant architecture
Julia
R
FORTRAN
Arduino