Desarrollo de un nuevo indicador del estado hídrico de las plantas basado en el espectro foliar
- P. Berríos 1
- A. Pérez-Pastor 1
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1
Universidad Politécnica de Cartagena
info
- Francisco Artés-Hernández (coord.)
- Juan Antonio Fernández-Hernández (coord.)
- Eva Armero Ibáñez (coord.)
- María Dolores de Miguel Gómez (coord.)
- José Miguel Molina Martínez (coord.)
- Juan José Alarcón Cabañero (coord.)
- José Enrique Cos Terrer (coord.)
Publisher: Universidad Politécnica de Cartagena
ISBN: 978-84-17853-61-7
Year of publication: 2023
Pages: 16-19
Congress: Workshop on Agri-Food Research for young researchers (11. 2022. Cartagena)
Type: Conference paper
Abstract
Stem water potential is the most used indicator to assess plant water status due to its highsensitivity to climatic demand and irrigation regime, despite its low spatial and temporal scale. The aim of our work was to evaluate other indicators, such as the leaf-scale spectrumemitted by adult mandarin trees subjected to different water stress intensities, whichallow us to estimate the plant water status at a larger scale. The emission of radiation at awavelength of 1000 nm, and the range between 1540-1740 nm (SWIR) allowed us todifferentiate the levels of stress in a significant way. Through the combination of differentwavelengths and index structures we identified a new indicator highly sensitive to waterstatus, called Visible Infrared Ratio Index (VIRI), which correlates very well with stemwater potential. This index could be a valid complement for irrigation scheduling at alarger plot scale.