continuous data logging instruments for drought experiments
DESCRIPTION
Continuous Data Logging Instruments For Drought Experiments. INTERNATIONAL. SFM-1. Research Question: What is the effect of drought on total plant water use over a growing season? Instrument : SFM-1; Sap Flow Meter Variable Outputs: Cumulative Transpiration (Litres) or - PowerPoint PPT PresentationTRANSCRIPT
INTERNATIONAL
Solutions for soil, plant & meteorology
www.ictinternational.com
ContinuousData Logging
Instruments For Drought
ExperimentsINTERNATIONAL
INTERNATIONAL
Solutions for soil, plant & meteorology
www.ictinternational.com
SFM-1Research Question: What is the effect of drought on totalplant water use over a growing season?
Instrument:SFM-1; Sap Flow Meter
Variable Outputs:Cumulative Transpiration (Litres) orCumulative Sap Flow (Litres)
For more information see SFM-1, Small Stems or Hydraulic Redistribution
0
100
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900
IrrigatedDrought
Cum
ula
tive
Sa
p F
low
(L
itre
s)
Time – One MonthMay 1st May 31st
INTERNATIONAL
Solutions for soil, plant & meteorology
www.ictinternational.com
SFM-1Research 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)
Warm Temp (28°C) Daily Sap Volume = 24L
Extreme Temp (41°C)Daily Sap Volume = 17L
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45
0
500
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2000
Air t
empe
ratu
re o
c
Sap
flow
cm3
Sap flow for E. cladocalyx and air temp on 21/12/09ca 24lper day
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Air t
empe
ratu
re o
c
Sap
flow
cm3
Sap flow for E. cladocalyx and air temp on 10/01/10 ca 17l per day
Data & Graph: A. Doronila
For more information see SFM-1, Small Stems or Hydraulic Redistribution
INTERNATIONAL
Solutions for soil, plant & meteorology
www.ictinternational.com
SFM-HFDResearch Question: Can plants redistribute water from wet roots to dry roots across the stem?
Instrument:SFM-HFD; Heat Field Deformation
Variable Outputs:Sap Velocity (cm/hr)Sap Flux Density (cm3/cm2/hr)
For more information see Nadezhdina et al, 2009, New Phytologist, 184, 932-43.
INTERNATIONAL
Solutions for soil, plant & meteorology
www.ictinternational.com
PSY-1Research Question: What is the effect of drought on stem water potential?
Instrument:PSY-1; Stem Psychrometer
Variable Outputs:Stem Water Potential (Ψ, MPa)
Example 5 day dataset of increasing drought; Logging Interval: 30min;
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
0
Stem
Wat
er P
oten
tial (
MPa
)
Day
Night
Increasing drought
See - Downey & Arias 2011 Water Potential of Coffee. Technical note
INTERNATIONAL
Solutions for soil, plant & meteorology
www.ictinternational.com
DRL26Research Question: What is the effect of drought on daily stem shrinkage?
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
6.8
7
7.2
7.4
7.6
7.8
8
8.2
8.4
Stem
Incr
emen
t (m
m)
Feb-1st Feb-2nd Feb-3rd Fed-4th Fed-5th
Max Diam.
Min Diam.
MDS = 586μm MDS = 515μm MDS = 725μm MDS = 425μm MDS = 766μm
For more information see DRL26 Brochure and DRL26 Applications
INTERNATIONAL
Solutions for soil, plant & meteorology
www.ictinternational.com
TSM-4000LResearch Question: Does canopy temperature Increase under drought due to less cooling from transpiration?
Instrument:TSM-4000L; Infrared Thermometry
Variable Outputs:Canopy Temperature (TC) with reference
to air temperature (Ta)
Tota
l Dai
ly S
ap F
low
(L)
TC - TaFor more information see TSM-4000L Brochure
INTERNATIONAL
Solutions for soil, plant & meteorology
www.ictinternational.com
SMM-MP406Research Question: Following a rain event, what is thenature of the wetting front in a 2m soil profile?
Instrument:SMM-MP406; Standing Wave Principle
Variable Outputs:Volumetric Soil Water Content (%)
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.
For more information see SMM-MP406 Brochure
INTERNATIONAL
Solutions for soil, plant & meteorology
www.ictinternational.com
ICT International Pty LtdSolutions for soil, plant & meterology
[email protected]: 61 2 6772 6770Fax: 61 2 6772 7616PO Box 503, Armidale, NSW, Australia, 2350
INTERNATIONAL