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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.

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

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