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Enabling better global research outcomes in soil, plant & environmental monitoring.

Data Logging Instruments For Drought Experiments

Continuous Data Logging Instruments For Drought Experiments

SFM-1
Research Question:
What is the effect of drought on total plant water use over a growing season?

arbotom127

Instrument: SFM-1; Sap Flow Meter

Variable Outputs:
Cumulative Transpiration (Litres) or Cumulative Sap Flow (Litres)

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SFM-1
Research Question:
What is the effect of extreme temperature on daily plant water use?

Instrument: SFM-1; Sap Flow Meter

Variable Outputs:
Sap Velocity (cm/hr) Daily Sap Volume (Litres per Day)

drought-experiments3

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SFM-HFD
Research Question:
Can plants redistribute water from wet roots to dry roots across the stem?

sfm-02

Instrument: SFM-HFD; Heat Field Deformation

Variable Outputs:
Sap Velocity (cm/hr) Sap Flux Density (cm3/cm2/hr)

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PSY-1
Research Question:
What is the effect of drought on stem water potential?

 dixon-tyree-sensor-on-tomato-01

Instrument:
PSY-1; Stem Psychrometer

Variable Outputs: Stem Water Potential (Ψ, MPa)

Example 5 day dataset of increasing drought; Logging Interval: 30min;

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DRL26
Research Question:
What is the effect of drought on daily stem shrinkage?

 

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Instrument: DRL26; Logging Band Dendrometer

Variable Outputs:
Maximum Daily Shrinkage (MDS, μm) Stem Increment (Growth; μm)

MDS = Maximum Daily Stem Diameter minus Minimum Daily Stem Diameter

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TSM-4000L
Research Question:
Does canopy temperature increase under drought due to less cooling from transpiration?

 

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Instrument: TSM-4000L; Infrared Thermometry

Variable Outputs:
Canopy Temperature (TC) with reference to air temperature (Ta)

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SMM-MP406
Research Question:
Following a rain event, what is the nature of the wetting front in a 2m soil profile?

 

drought-experiments13

Instrument: SMM-MP406; Standing Wave Principle

Variable Outputs:
Volumetric Soil Water Content (%)

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Figure. Drainage under cotton, Biloela, Queensland,Australia. Cotton root depth is to 70cm however data shows drainage below root zone. Therefore water is being wasted.