Stress induced water content variations in mango stem by time domain reflectometry

  title={Stress induced water content variations in mango stem by time domain reflectometry},
  author={Arie Nadler and Eran Raveh and Uri Yermiyahu and Steve Green},
  journal={Soil Science Society of America Journal},
Close, direct, and accurate monitoring of the plant water status may serve as a practical (irrigation scheduling) and a research (climate-environmental induced physiologic changes) tool. Methods for highfrequency capacitance measurement (e.g., time domain reflectometry [TDR]) possess the potential for high resolution dielectric measurements with minimal dependence on properties of the measured matrix. The objective of this study is to test the accuracy, response time, and sensitivity of the TDR… 

Figures and Tables from this paper

Substituting Stem's Water Content by Electrical Conductivity for Monitoring Water Status Changes

Rapid and sensitive detection of stress in trees due to irrigation practices, draught, salinity, pollution, lack of nutrients, or diseases may be useful for research and practical purposes. Tree

Detecting Water Stress in Trees Using Stem Electrical Conductivity Measurements

Using time domain refl ectometry (TDR), we studied stem water content (θ stem ), stem electrical conductivity (σ stem ), and their ratio for 220 d in stressed, installation-cured, living trees of

Using the compensated heat pulse method to monitor trends in stem water content in standing trees.

The results of this work suggest that the CHP technique could be employed to monitor the dynamics of both θ and sap flow simultaneously in standing trees and evidence that seasonal changes in θ might be used as a long-term water status indicator is suggested.

TDR measurement of stem and soil water content in two Mediterranean oak species

Abstract Since 1990s, time domain reflectometry (TDR) has been applied to estimate the stem water content of living trees. Here, new calibration equations relating the apparent dielectric constant

Measuring water content variations in stems by Standing Wave Ratio principle

The sensor measuring stem water content based on SWR (Standing Wave Ratio) principle was presented in this paper. Laboratory and field tests were performed to examine the feasibility of SWR (Standing

Estimation of tree water stress from stem and soil water monitoring with time‐domain reflectometry in two small forested basins in Spain

Soil‐tree water relationships were studied using time domain reflectometry (TDR) in two small forested basins in Spain. The stem water content of two Mediterranean Quercus species (Quercus pyrenaica

A non-invasive plant-based probe for continuous monitoring of water stress in real time: a new tool for irrigation scheduling and deeper insight into drought and salinity stress physiology

The non-invasive, magnetic leaf patch clamp pressure probe (also termed ZIM-probe) allows for the first time to measure continuously turgor pressure changes of plant leaves over long periods of time

Response characteristics and tomographic monitoring of the electric capacitance after irrigation in the soil–plant (ginkgo tree) continuum in a laboratory

The temporal and spatial variations of electrical capacitance of the soil–plant continuum in a laboratory were investigated. Based on a potted ginkgo tree with six irrigations, the electrical



Non-destructive measurement of stem water content by time domain reflectometry using short probes

Time Domain Reflectometry (TDR) has previously been used to determine the water content of soils. Here, TDR is assessed as a method of tracking the seasonal change in water content of the stems of

Measuring stem water content in four deciduous hardwoods with a time-domain reflectometer.

Stem water contents estimated with a TDR broadly agreed with gravimetric analyses of excised stem segments and increment cores, although there was evidence that overestimation of water content was possible with TDR as a result of wounding following wave guide installation.

Relations between Soil and Tree Stem Water Content and Bulk Electrical Conductivity under Salinizing Irrigation

In a semiarid region in a grapefruit (Nucellar 'Marsh seedless, Citrus paradise Macf.) orchard irrigated with salinized waters, the water content (θ) and bulk electrical conductivity (σ a ) of the

Evaluation of TDR Use to Monitor Water Content in Stem of Lemon Trees and Soil and Their Response to Water Stress

The purpose of the study was to compare the response of TDR- determined stem (θ stem ) and soil (θ soil ) water content to different irrigation managements. θ stem (L L -1 ) was measured with

Monitoring moisture storage in trees using time domain reflectometry

Temperature‐Dependent Measurement Errors in Time Domain Reflectometry Determinations of Soil Water

With the recent development of improved time domain reflectometry (TDR) probe design, measurement systems, and calibration procedures, it is now possible to detect and quantify the effect or

Stem water potential and apple size.

The sensitivity of leaf (ψ leaf) and stem (ψ stem) water potential and stomatal conductance (g S) to soil moisture availability in apple (Malus domestics Borkh.) trees and their correlation with


Abstract Groups of apple trees within an orchard were irrigated by either releasing a fine mist within the canopy or spraying water on the soil. Diurnal changes in the water content of the xylem were

Response of effluent-irrigated Eucalyptus grandis and Pinus radiata to salinity and vapor pressure deficits.

It is concluded that stomatal response to high VPD, not soil salinity, accounts for most of the reduction in summertime water use in Pinus radiata D. Don and Eucalyptus grandis Hill ex Maiden.