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Welcome to ECOSYS

UMR ECOSYS - Ecologie fonctionnelle et écotoxicologie des agroécosystèmes

Pesticides

  

Coordinator : Pierre Benoit

The scientific questions treated are : 

Sol-Fosse
  • the prediction of pesticide availability in soils
  • the spatial distribution of the functions of microbial degradation of pesticides
  • the coupling between availability and transport of the contaminants in reactive transport models.
  • the improvment of risk assessment modeling approaches

The main scientific questions concern understanding and modelling the processes which determine the fate of pesticides in soils, with their interactions and retroactions.

One of the present barriers for modelling the (bio-)availability, and so predicting ecotoxicological effects, and the leaks toward waters and air, lies in the influence of hydric conditions, changing with climatic and agronomic constraints (crop succession, intercropping, plant association, soil tillage).

Modelling tasks are especially pursued in the frame of projects. E.g., CIREPPE is focused on the role of intercrop plant covers and uses recent developments of a general model of pesticide fate and transport (routines PASTIS-Mulch, Coupling DOC-Organic Pollutant).

Furthermore, the explicit spatial description of pores for modelling coupled physical and biological processes, taking into account the soil heterogeneity at a microscopic scale, provides a key for understanding the influence of hydric conditions on the dynamic of organic pollutants in different types of soils. 

Ecopest

2013-2016 ECoPESt

Evaluation and comparison of environmental performances of innovative cropping systems designed to reduce the use of pesticides: relating...
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2013-2016 PERFORM

Modeling approaches considering spatial and temporal variability and uncertainties propagation to assess and to compare the environmental...
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Colloque « Pesticides : des impacts aux changements de pratiques », Angers, 4-6 novembre 2014

Angers, 4-6 Novembre 2014
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