Soil Testing Equipment

Feature

• Detects stress earlier than visual monitoring
• Computes Normalized Difference Vegetative Index (NDVI)
• Laser guides outline the edges of the measured sample area
• Calculates and displays a running average for multiple readings
• Connects to any GPS receiver that has a serial output option*
• Equipped with internal data logger and RS-232 port
• Records over 3,000 measurements (1,350 with added GPS/DGPS option)
• Configure and download meter with FieldScout® software and USB-to-3.5mm-Stereo-Plug Adapther (Item 3661U.(included)**
•  Includes hard carrying case and batteries

    *GPS interface requires two cables.  The GPS/DGPS cable (item 2950CV5) is available from Spectrum.
      A PC serial interface cable supplied by the manufacturer of the GPS receiver is also required.
  **PC cable connects to a computer USB port.

The FieldScout SC-900 Soil Compaction Meter is a professional-grade handheld instrument designed to measure soil compaction in agricultural fields, turf, and research plots. Its precise readings help identify areas of compaction that restrict root growth and water infiltration, guiding decisions about tillage, crop rotation or cover crop planting. It includes cone tips for fine and coarse soils, an ultrasonic depth sensor, internal load cell for penetration resistance, and a data-logger with USB/RS-232 interface for mapping and analysis.

The Soil Sampling Ring Kit Model A53 is a high‑quality undisturbed soil sampling set designed for collecting soil samples in seamless stainless-steel rings (53 mm) up to a depth of 2 meters in soft soils.
It enables reproducible laboratory‑quality samples with exactly known volume and diameter — critical for soil physics tests such as bulk density, porosity, soil‑water‑air relationships and other physical property determinations.
The set is intended for use on the surface, in auger holes or profile pits, above as well as under groundwater level (in soft soils) as long as rocks do not interfere.

The SOILSPEC system requires very little maintenance - It will provide years of reliable service

The SOILSPEC Moisture Plot software is simple & easy to use

The Tensiometer Tube - an inexpensive tube filled with water. It has a porous ceramic tip at the bottom and a rubber stopper in the top (see diagram). This tube is installed into the ground where you want to measure the soil moisture.

The auge - a very accurate electronic vacuum gauge. This is used to measure the vacuum (or suction) at the top of the tubes. The Standard Gauge (Model SST101G) reads the vacuum in the tensiometer tube. You note down the readings and add this to your plots of soil moisture. The Computer Gauge (Model SST102G) stores readings along with the tube ID. time and date. This is downloaded to your PC using the Moisture Plot software, supplied with the gauge.

The System - A complete system consists of several monitoring sites around the area to be irrigated. Each site needs two or three tubes of different lengths. This allows for the monitoring of soil moisture at various depths and movement of moisture through the soil during the irrigation cycle. Tensiometers results are read and recorded regularly. Graphed figures from each tube provide an accurate picture of soil moisture.

Soil water sampler are most typically used to extract soil water samples from varying depths in the root zone of crops under drip irrigation that undergo frequent fertigation. For measuring nitrate levels, Salinity, EC or other chemical elements commonly associated with soil water management in irrigation (fertigation) regimes. Allow you to take full advantage of residual and mineralized nitrogen by delaying or minimizing fertilizer applications. Monitoring below the root zone can verify the presence of nitrate leaching.

Available in three sizes 30, 60 & 90 cm long and include a single suction line, stopper, finger clamp/valve. Hand vacuum pump with gauge and tubing adapter is used for putting the tube under vacuum for the sample collection. Syringe is used for extraction of the collected soil solution.

Features/Specifications:

·         Each sampler has ceramic tip, suction line, stopper and suitable valve/clamp.

·         Suitable Hand vacuum pump with gauge and tubing adaptor for putting the tubes under vacuum.

·         Suction syringe to extract soil water sample from different tubes.

·         Coring tool: 1” dia, 1-meter-long with handle for drilling suitable holes in soil.

The TEROS 11 from METER Group is a ruggedized, high-precision soil moisture and temperature probe built for long-term field installations even under challenging conditions. It uses 70 MHz capacitance technology with sharpened stainless-steel needles and an epoxy body that resists salts and harsh soil environments.
With a compact 9.4 cm length and an impressive one-liter “volume of influence”, it delivers highly reliable volumetric water content (VWC) readings while minimizing the sensor-to-sensor variability.
Additionally, it measures soil temperature (-40 °C to +60 °C range) and supports common datalogger protocols (SDI-12 / DDI) for seamless integration.

he TEROS 12 soil moisture sensor uses a completely new calibration procedure that maximizes accuracy and minimizes sensor-to-sensor variability while keeping the cost reasonable. So you can be confident that every sensor you install is going to read exactly like the next one. Unlike other sensors on the market which spec an unverifiable  ±1.0% VWC accuracy, the TEROS 12 was rigorously tested by our soil physicists across a challenging range of soil types and EC levels so you can be confident in the accuracy of your data.

Plus, TEROS sensor repeatability can be checked with an accuracy verification standard. No other soil moisture sensor has this ability. Just slide the verification clip onto a sensor and plug it into a logger. If it reads within the right range, your sensor is good to go

The TEROS 21 is a high‑precision, maintenance‑free soil water potential (matric potential) sensor designed for long‑term field or lab deployment. Unlike standard volumetric water content sensors, the TEROS 21 allows you to measure how much water in the soil is available to plants / moving — by measuring soil water potential rather than just water content.

Because matric potential is less dependent on soil type than volumetric content, the TEROS 21 provides more comparable data across different soils.

It has a rugged design, integrates temperature measurement, and supports digital communications (SDI‑12 / RS‑232) for easy data logging and networked monitoring.

The TEROS 22 water potential sensor is incredibly easy to use. It requires no maintenance, and it’s accurate enough for most applications. In fact, the TEROS 22 provides an even more accurate soil moisture picture than measuring water content alone. Plus, unlike water content, matric potential isn’t dependent on soil type, so you can compare moisture between different sites. Just like the TEROS 21, the TEROS 22 is surprisingly affordable and measures all the way from near saturation to air dry (0 to −100,000 kPa) making them both true full range water potential sensors.

direct measurement of soil water potential (matric and capillary) in outdoor conditions. With an integrated temperature sensor and no need for calibration, it offers plug‑and‑play operation The TEROS 32 is a rugged, high‑precision field tensiometer built by METER Group, designed for and reliable monitoring of pore‐water pressure across both negative and positive ranges.

Specifically designed for field deployment in agriculture, irrigation management, environmental monitoring and geotechnical settings, the TEROS 32 allows you to monitor when and how water moves in the soil profile, helping you optimize irrigation scheduling, soil‐water balance studies and root‐zone water status. With high resolution and accuracy in the range of ‑85 to +50 kPa, it excels in both wet and moderate dry soil conditions.

The Hood-Infiltrometer by Umwelt‑Geräte‑Technik GmbH (UGT) is a field-grade instrument designed to measure near-saturated and unsaturated soil hydraulic conductivity and infiltration under natural conditions. It consists of:

·         a sealed hood placed directly on the soil surface (open at the bottom) that is filled with water, forming a defined circular infiltration source area;

·         a Mariotte water supply system – an infiltration vessel, bubble tower and aeration tube to maintain a constant pressure head;

·         a U-tube manometer (and optionally pressure sensors) to precisely record the hydraulic pressure head at the soil surface;

One of its key advantages is that no contact layer (such as sand or filter cloth) is required between the hood and the soil surface, enabling infiltration tests with minimal disturbance and more realistic boundary conditions.

In its standard configuration the device measures infiltration under pressure heads ranging from zero to the air-penetration (bubble) point of the soil; with an optional tension chamber it can also perform infiltration under negative pressure (up to 60 hPa) for unsaturated conductivity measurements.

This instrument is well-suited for soil science, hydrology, irrigation research, environmental monitoring and field investigations where accurate infiltration and hydraulic conductivity data are needed.

The WP4C Soil/Plant Water-Potential Meter from METER Group is a high-precision laboratory instrument designed to measure total water potential (matric + osmotic) in soils, soilless substrates, plant tissues and other porous materials. It uses the chilled-mirror dew-point method, where a small sealed chamber equilibrates with the sample’s vapor, and a finely-controlled mirror is cooled until dew forms. Both the mirror and sample temperature are measured to determine the sample’s water potential with exceptional accuracy.

With a wide measurement range from 0 to -300 MPa, this instrument is ideal for research labs in agriculture, soil physics, environmental monitoring and geotechnical engineering. It dramatically speeds up water-potential measurement (5-20 minutes depending on mode), compared to older techniques.