Room: Poster Area
Date: Wednesday, 20 May 2026
Time: 11:30 - 12:45 CEST
Session code 1BV.4
Biomass supply from agriculture, forestry, and sustainable cropping systems
Miscanthus and Switchgrass’ Water Needs in Southwestern French Conditions
Short Introductive summary
Local adaptation of Miscanthus (Miscanthus × giganteus) and switchgrass (Panicum virgatum) has to be supported with additionnal references on water use regarding climate change issues. Water use efficiency and drought tolerance of both crops were assesed in a long-field experiment established in Southwestern France from 2006 to 2020. Biomass yield was measured under different water regimes : rainfed, maximum evapotranspiration and 50% of maximum evapotranspiration. A precise drip irrigation system and capacitive sensors were used. Cumulative evapotranspiration during growing cycle and water use efficiency were measured. Functions of production for water have been developped and would detail conditions of rainfall and soil water capacity.
Presenter
Sylvain MARSAC
ARVALIS, R&D Dpt., FRANCE
Presenter's biography
Sylvain, agriculture engineer since 2003, works for ARVALIS a French R&D company for cash crop farmers. He carries out research on economics - profitability, farm competitiveness - and strategies to adapt farming system : Crop rotation management, Biomass use, double cropping systems.
Biographies and Short introductive summaries are supplied directly by presenters and are published here unedited
Co-authors:
L. Hermet, ARVALIS, Baziège, FRANCE
P. Larsonneau, ARVALIS, Baziège, FRANCE
Session reference: 1BV.4.9