Evaluation of different approaches for estimating and mapping crop water status in cotton with thermal imaging

Evaluation of different approaches for estimating and mapping crop water status in cotton with... Canopy temperature has long been recognized as an indicator of plant water status, therefore, a high-resolution thermal imaging system was used to map crop water status. Potential approaches for estimating crop water status from digital infrared images of the canopy were evaluated. The effect of time of day on leaf temperature measurements was studied: midday was found to be the optimal time for thermal image acquisition. Comparison between theoretical and empirical approaches for estimating leaf water potential showed that empirical temperature baselines were better than those obtained from energy balance equations. Finally, the effects of angle of view and spatial resolution of the thermal images were evaluated: water status was mapped by using angular thermal images. In spite of the different viewing angles and spatial resolution, the map provided a good representation of the measured leaf water potential. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Precision Agriculture Springer Journals

Evaluation of different approaches for estimating and mapping crop water status in cotton with thermal imaging

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Springer US
Copyright © 2009 by Springer Science+Business Media, LLC
Life Sciences; Agriculture; Soil Science & Conservation; Remote Sensing/Photogrammetry; Statistics for Engineering, Physics, Computer Science, Chemistry and Earth Sciences; Atmospheric Sciences
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    Girona, J; Mata, M; Campo, J; Arbonés, A; Bartra, E; Marsall, J
  • Canopy temperature variability as an indicator of crop water stress severity
    Gonzalez-Dugo, MP; Moran, MS; Mateos, L; Bryant, R

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