ICT Plant Science Instrumentation

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Sapflow	Plant Temperature Sensors
Dendrometers	Infra-Red Thermometers
Porometers	Light Sensors
Plant Hydraulic Conductance Meters	Ceptometers and Radiometers
Plant Water Potential	Plant Biomass & Leaf Area Index (Cropscan)
Leaf Wetness Sensors	Optical Sensors

Plant Science References

Sapflow Sensors

Heat Ratio Method (HRM)

HRM Installation Kit

The Heat Ratio Method (HRM) is a modification of the Compensation Heat Pulse Method (CHPM). The HRM improves on the CHPM by allowing very slow flow rates and even reverse sap flow to be measured. This allows water flows to be monitored in stems and roots of a wide range of different species, sizes and environmental conditions, including drought.

Energy or Heat Balance (Dynagage)

The stem heat balance (SHB) method was originally proposed by Sakuratani (1981) to measure the mass flux rate or sapflow in small stemmed herbaceous plants.

The SHB method is based on the energy balance of a stem segment to which regulated heat energy is constantly supplied by an external annular heater.

Thermal Dissipation (TDP)

The Thermal Dissipation Probe (TDP) directly measures sap velocity which can be converted to volumetric flow rate given an accurate measurement of sapwood area for the tree. TDP is an uncomplicated and inexpensive method ideally suited to whole plant transpiration measurements on large diameter trees.

Dendrometers
Electronic Dendrometers for the real time measurement and logging of fruit & stem growth
Manual Band Dendrometer DB20 (NEW)	Manual Band Dendrometers or increment gauges are used extensively in commercial forestry and forest research. They are a very reliable and low cost method of accurately measuring and monitoring tree growth rates.
Logging Band Dendrometer DRL26 (NEW)	Whole tree water relations research has just become easier and more accurate. The logging band Dendrometer now incorporates its own self-contained datalogger. Using an internal lithium battery there is no need for external batteries or solar panels to power the logger, meaning it can be attached to a tree and set logging with no other accessories or requirements.
DEX Dendrometers	The DEX20, DEX70, DEX100 and DEX200 are highly precise electronic dendrometers that measure the growth and size of plant stems and fruits. The DEX is a caliper-style device with a full bridge strain gauge attached to a flexible arm. The output signal is then recorded by a datalogger or computer in real time.

Porometers
Leaf Porometer	The SC-1 Leaf Porometer automatically measures stomatal conductance and eliminates human error by picking the end point. The direct readout displays data in terms of either conductance or resistance.

Plant Hydraulic Conductance Meters
High Pressure flow meters for measuring Hydraulic Conductance in plant stems and root systems
HPFM-C	The High Pressure Flow Meter (HPFM) is designed to perform quantitative root and stem analysis without having to dig up roots or drag limbs back to the lab. In most cases, the analysis of a sample root or shoot is completed in as little as 10 minutes.
HCFM-XP	The Hydraulic Conductance Flow Meter (HCFM-XP) is designed to perform quantitative root and stem analysis without having to dig up roots or drag limbs back to the lab. In most cases, the analysis of a sample root or shoot is completed in as little as 10 minutes.

Plant Water Potential Measurements
Scholander Pressure Bombs for field & lab measurement of plant leaf water status
Plant Water Status Consoles	The Model 3000 has been the standard of excellence in plant water status research for over 2 decades. This work horse has all the features needed to make extensive readings in record time. Supplied without a bottled gas tank & regulator it is designed for use within the lab where a large air supply tank or mains air supply is available.
Portable Plant Water Status Console	The 3115 is our newest model for measuring Plant Water Potential. Its 25 Bar operational range is perfect for the majority of readings.
Pressure Bomb Grommet Sets	All grommets, sleeves, and washers can be purchased in individual packs of 5 or as part of a kit of the various sizes.
Plant Water Status Console Regulator
Stem Hygrometer Stem Hygrometer Installation Kit	Stem Hygrometers offer significant benefits over more common leaf hygrometers through the ease of attachment which minimizes energy balance disruptions that improve measurement accuracy

Leaf Wetness
Leaf Wetness Sensor Used with the Em50 logger system LWS Brochure (140K PDF)	The Dielectric Leaf Wetness Sensor (LWS) enables accurate and affordable leaf wetness monitoring. The Leaf Wetness Sensor determines the presence and duration of wetness on a leaf’s surface, enabling researchers and producers to forecast disease and protect plant canopies.
Leaf Wetness	ICT International's LW2 and LWH leaf wetness sensors replicates the effect of moisture on leaf or artificial surfaces and can be used for a variety of situations such as leaf wetness, rain event or other applications where over-spray events need to be monitored or controlled.

Plant Temperature Sensors
Canopy Temperature
TT4 Smart Thermocouple Interface	The TT4 is a digital interface to allow connection of thermocouple temperature sensors to the SL5 SmartLogger. It provides a means of connecting up to four thermocouples of the same material type to the system, and will interface to most types of common thermocouple.
Leaf Temperature
TR4 Smart Thermistor Interface	The TR4 is a digital interface to allow connection of thermistor temperature sensors to the SL5 Smart Logger. It provides a means of connecting up to four thermistors of the specified type to the system.

Everest Infra-Red Thermometers
Everest 6110.4	A Handheld, Low Temperature Infra-Red Thermometer with light sighting, variable focus and selectable measurement mode.
Everest 100.3ZL	A Portable Low Temperature Infra-Red Thermometer ideal for research and natural applications, and is capable of forty hours of continuous use.
Everest Model 1000	The Model 1000 calibration source is used to check and verify the temperature reading of the low temperature, portable infrared thermometers.

Light Sensors
Net Pyrradiometer	The CN1-R Net Pyrradiometer measures the net total radiation flux (solar, terrestrial, and atmospheric) downward and upward through a horizontal surface. It is suitable for solar energy studies in agriculture and meteorology.
Quantum PAR Sensor PR1	The PR1 Photosynthetic Active Radiation (PAR) sensor has a similar construction to the SR2 (below) but with a spectral response range from 400 to 700 nanometres. Designed to measure light that promotes photosynthesis in the plant cell, the PR1 can be used above or within a canopy crop growing under either natural or artificial lighting (such as in glasshouses).
Solar Radiation Sensor SR2	The SR2 is a solar radiation shortwave (global) spectrum sensor with a spectral response from 400 to 950 nanometres, which is used to record sunshine hours or total incident solar energy.

Ceptometers and Radiometers
AccuPAR Ceptometer
Ceptometers and Solarimeters for measuring Leaf Area Index (LAI) and plant biomass
AccuPAR (LP-80)	With the new LP-80, you get instant real-time PAR measurements as soon as you turn it on, and your LAI data is updated with each PAR measurement.
Cropscan Multi-Spectral Radiometers
Multi-Spectral Radiometers for measuring plant biomass, NVDI, Leaf Area Index
Cropscan MSR5 Ground-truthing Landsat satellite images
Cropscan MSR87 General plant growth studies
Cropscan MSR16R Custom applications

Optical Sensors
Force A optical sensors for the assessment of physiological and health status of crops through their intrinsic fluorescence properties. These new tools needed for real-time crop monitoring and management, are dedicated to precision agriculture, and can be used for plant sciences research in general.
Multiplex 2	A NEW PORTABLE NON-CONTACT OPTICAL SENSOR FOR PLANT SCIENCES MULTIPLEX 2 is a hand-held multi-parameter optical sensor based on non-contact leaf or fruit autofluorescence measurements. It is operating on a long-life rechargeable battery.
Dualex 3	OPTICAL ABSORBANCE METERS FOR EPIDERMAL POLYPHENOLICS The DUALEX 3 Series is based on chlorophyll fluorescence screening. It is insensitive to variable chlorophyll fluorescence and it is independent of leaf chlorophyll content. The measurement is non-destructive, very rapid and simple. It does not need calibration or source adjustment. No preparation of the plant is required, and the measurement can be performed under ambient light outdoors.