Characterization of salinity-induced effects in olive trees based on thermal imagery

R. Rud, Y. Cohen, V. Alchanatis, I. Beiersdorf, R. Klose, E. Presnov, A. Levi, R. Brikman, N. Agam, A. Dag, A. Ben-Gal

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

Olive, considered to be moderately salt tolerant, is commonly irrigated with marginal or low quality water. Exposure to relatively high salinity is detrimental to tree health and production. It was hypothesized that physiological response of olive trees to salinity leads to increased relative canopy temperature and thus is identifiable by means of thermal imagery. A controlled experiment was conducted in an arid climate zone with trees grown in lysimeters irrigated with water having 5 levels of salinity. Thermal images were acquired and tree-scale evapotranspiration, mid-day stem water potential (Ψ) and leaf stomatal conductance (g) were measured. Maximum canopy temperature differences between salinity treatments were more pronounced after the mid-day solar radiation peak. Canopy temperature increased as a function of salinity, similar to the response of Ψ and g, with significant differences found between the lower and higher salinity levels.

Original languageEnglish
Title of host publicationPrecision Agriculture 2015 - Papers Presented at the 10th European Conference on Precision Agriculture, ECPA 2015
EditorsJohn V. Stafford
PublisherWageningen Academic Publishers
Pages511-517
Number of pages7
ISBN (Electronic)9789086862672
DOIs
StatePublished - 1 Jan 2015
Event10th European Conference on Precision Agriculture, ECPA 2015 - Tel-Aviv, Israel
Duration: 12 Jul 201516 Jul 2015

Publication series

NamePrecision Agriculture 2015 - Papers Presented at the 10th European Conference on Precision Agriculture, ECPA 2015

Conference

Conference10th European Conference on Precision Agriculture, ECPA 2015
Country/TerritoryIsrael
CityTel-Aviv
Period12/07/1516/07/15

Keywords

  • Crop water stress index
  • Olives
  • Salinity
  • Thermal imagery

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