[1] INRA, UMR Sci Agron Appl Hort 0462, F-49071 Beaucouze, France
[2] INRIA Saclay Ile de France, EPI DigiPlante, F-91893 Orsay, France
[3] Ecole Cent Paris, Lab Appl Math, F-92295 Chatenay Malabry, France
[4] INRA, AgroParisTech, UMR Environm & Grandes Cultures 1091, F-78850 Thiverval Grignon, France