Water status detection in California table grapes: from leaf to airborne

M.M. Alsina; T. Cheng; D. Riaño; M. Whiting; S. Ustin; D.R. Smart

Water status detection in California table grapes: from leaf to airborne

In: Precision agriculture '13

Authors:

M.M. Alsina

M.M. Alsina ¹Department of Viticulture & Enology, University of California, One Shields Avenue, Davis, CA 95616-5270, USA; mmalsinamarti@ucdavis.edu

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T. Cheng

T. Cheng ²Center for Spatial Technologies and Remote Sensing, Department of Land, Air and Water Resources, University of California, One Shields Avenue, Davis, CA 95616-5270 USA

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D. Riaño

D. Riaño ³Laboratorio de Espectro-radiometría y Teledetección Ambiental. Consejo Superior de Investigaciones Científicas (CSIC), C/Albasanz 26-28, 28037 Madrid, Spain)

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M. Whiting

M. Whiting ²Center for Spatial Technologies and Remote Sensing, Department of Land, Air and Water Resources, University of California, One Shields Avenue, Davis, CA 95616-5270 USA

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S. Ustin

S. Ustin ²Center for Spatial Technologies and Remote Sensing, Department of Land, Air and Water Resources, University of California, One Shields Avenue, Davis, CA 95616-5270 USA

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, and

D.R. Smart

D.R. Smart ¹Department of Viticulture & Enology, University of California, One Shields Avenue, Davis, CA 95616-5270, USA; mmalsinamarti@ucdavis.edu

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Type:: Chapter

Pages:: 225–231

DOI:: https://doi.org/10.3920/9789086867783_028

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The objective of this experiment was to investigate the suitability of airborne spectral reflectance for detection of plant canopy water status and its potential use as a tool for precision irrigation management of table grapes. The experiment took place in 2011 and 2012 in a table grape vineyard in Delano, CA, USA. Two deficit irrigation treatments were established, one per year, and compared to the grower’s usual irrigation schedule. In spring and summer of 2011 and in summer 2012, an airborne platform equipped with NASA’s MODIS/ASTER Airborne Simulator (MASTER) sensor overflew the vineyard. Coinciding with the flights, the leaf water potential, leaf specific water content and leaf area index were measured at field level, and crop evapotranspiration was measured using the surface renewal approach. Our results demonstrate that when the changes in vine water status caused by deficit irrigation treatments were measureable at the field level, they could also be detected from the airborne platform. Therefore, both methods have similar potential for irrigation scheduling.

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Precision agriculture '13

E-Book ISBN:: 9789086867783

Publisher:: Wageningen Academic

Print Publication Date:: 01 Nov 2013

Subjects
- Life Sciences
  - General
  - Agriculture & Environment

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Water status detection in California table grapes: from leaf to airborne

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Precision agriculture '13

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