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Contribution of remote sensing in analysis of crop water stress. Case study on durum wheat

Jolivot A., Labbé S., Lebourgeois V.. 2012. In : M. Erena, A. López-Francos, S. Montesinos, J-F. Berthoumieu. The use of remote sensing and geographic information systems for irrigation management in Southwest Europe. Zaragoza : CIHEAM, p. 209-216. (Options Méditerranéennes, Series B: Studies and Research, 67).

Precision irrigation requires frequent information on crop conditions spatial and temporal variability. Image-based remote sensing is one promising techniques for precision irrigation management. In this study, we investigated the use of broad band multispectral (visible, near infrared and thermal infrared bands) and thermal airborne imagery for the characterization of water status of durum wheat crop through two indices: the Water Deficit Index (WDI) and the Simplified Surface Energy Balance Index (S-SEBI). Compari - sons between these two indices and the ratio between actual and potential evapotranspiration (AET/PET) show that such techniques are promising for precision irrigation management. (Résumé d'auteur)

Mots-clés : technique de prévision; bilan hydrique; bilan énergétique; indice de surface foliaire; Évapotranspiration; température de l'air; rayonnement thermique; rayonnement infrarouge; déficit hydrique du sol; stress dû à la sécheresse; télédétection; imagerie; conservation de l'eau; irrigation; triticum durum; languedoc-roussillon

Thématique : Méthodes de relevé; Irrigation; Physiologie et biochimie végétales; Troubles divers des plantes; Chimie et physique du sol

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