Growing innovation.

We are innovators in soil moisture monitoring technologies.

With thousands of sensors in use around the world, the GroPoint brand is known for high accuracy, extreme durability and an exceptional price:performance ratio with our soil sensors performing as good (in most cases better) as sensors costing much more.

Who Uses GroPoint?

A major market segment for us is agriculture. Our agricultural customers worldwide use GroPoint products to establish and maintain precise irrigation to increase crop yield and quality, and decrease fertilizer use, leaching and erosion and production costs overall. High-value crops like grapes, avocados, tree fruits and citrus, cranberries, asparagus, peppers, tomatoes and more have the most potential to benefit from optimizing moisture penetration through the root zone.

Because GroPoint soil sensors provide scientific-grade accuracy at a very affordable cost, there’s no reason to not employ moisture monitoring for every agricultural and silvicultural application. Our soil sensorsloggers and wireless communication solutions can be deployed easily without special training or equipment, and in a large variety of soils without special calibration.

GroPoint systems provide the information necessary to use precise irrigation methods. After implementation, our customers typically report:

  • water savings of up to 20%

  • increased product yield of 20% to 57%

Other applications for soil moisture monitoring


Soil moisture sensors are used to characterize the hydrological requirements of biomass crops, which need to be cultivated in order to produce ethanol. Agronomists that specialize in biomass look at new ways to ferment crops to increase the ethanol yields. The goal is to be able to produce ethanol from not only the fermentation of the fruit, but the stems, leaves, and roots.


Monitoring soil moisture is an important input parameter into erosion prediction models. The water infiltration rate of soil is a function of soil moisture. If the soil is dry, the infiltration rate will be sufficient to prevent run off. Overland water flow may occur if rain events happen at a time when soil is saturated.


Regional drought can severely affect the economy and even lead to starvation in some areas of the world. With advances in computer processing and environmental modeling methods, scientists are beginning to understand regional water budgets and hydrological processes. An important input into drought forecasting models is changes in regional soil moisture. Long-term soil moisture data over large regions can be used to predict and characterize harmful droughts.


In western North America, a large percentage of the water used for irrigation comes from the melting snowpack. There is increasing concern that climate change will affect not only the depth of seasonal snowpack but when the snowmelt occurs. Soil represents a large reservoir for water storage under snowpack. For example, a larger than average snowpack will still result in low reservoir recharge if the soil is dry in the autumn. Monitoring soil moisture is a critical parameter for the estimation of reservoir recharge. The USDA SNOTEL program has hundreds of sites in the US monitoring soil moisture for reservoir recharge models.


Each year, millions of dollars in damage to property and lives are lost due to landslides due to changes in land use. The inputs to landslide prediction models are slope, vegetation, toe slope, soil cohesiveness, and soil moisture. In some areas that experience perched water tables, the soil is very heavy as it becomes saturated, thus becoming more influenced by gravity.


There are thousands of golf courses and sports playing fields worldwide that are regularly irrigated. Just as in any other type of crop production, over irrigation will waste water, energy, fertilizer and will generate run off that will negatively affect the surrounding environment. Soil moisture sensors are a crucial tool to help optimize irrigation of sports turf.

Archeology   ●   Dust Control   ●   Mesonets and Weather Station Networks   ●   Phytoremediation   ●   Soil Carbon Sequestration Studies   ●   Watershed Hydrology Studies   ●   Wetland Delineation Indicators   ●   Satellite Ground Truthing   ●   Cannabis Cultivation

What Our Customers Are Saying


I like these probes because they have given us good reliability and have been out in the Arizona heat for almost three years, with little or no trouble. The ability to make a single insertion and get distinct soil moisture profiles, i.e., 0-30 cm, 30-60 cm, etc., has given us the advantage of minimal soil disturbance while getting reliable soil moisture values.

Edward C. Martin, PhD
Professor & Extension Specialist, Dep. Ag. & Biosystems Engineering
Maricopa Agricultural Center

This is what I openly say to not only my customers but also to NRCS engineers and other interested parties: ‘I believe that the GroPoint sensor provides the best value to my customer because of its accuracy, reliability and the fact that it requires no additional maintenance or calibration once installed.’

David Bower
Branch Manager
Ewing Irrigation

The instrument receives a fair amount of ‘abuse’, being carted over logging slash, through salmonberry and other brush vegetation and has been used in the rain. However, it has been rugged and reliable. The measurements generated are believable and repeatable and nicely relate to patterns of precipitation occurring at the site.

Kevin Brown, PhD, R.P.Bio., P.Ag.
KR Brown and Associates

The alternative to [the GroPoint Profile] is trenching with horizontal insertion of numerous (short) probes. The effort of trenching alone is a deterrent, and the disturbance of soil and root systems is yet more of a deterrent. I find it difficult to fathom why a researcher would use this alternative.

Vincent P. Gutschick
Prof. of Biology
New Mexico State University

I have used GroPoint sensors and data loggers to schedule deficit irrigation over thousands of acres of premium wine grapes since 1999. The data on soil moisture status has proved accurate and consistent during and between seasons. Importantly, running a network of 80+ sensors over this time, I have had only 2 sensors and one logger fail from non-mechanical causes. I also have a network of [competitive] loggers/sensors, which demonstrated a 15-25% failure rate in the first 2 seasons.

Doug Beck, PhD
Vineyard Manager
Monterey Pacific Inc.

We innovate to deliver more value from our sensors

Introducing the GroPoint Profile

TDT5: GroPoint's patented technique for soil moisture measurement

  • scientific-grade accuracy and consistency of measurements
  • simpler construction—more robust
  • less expensive to manufacture—better value

GroPoint™ sensors utilize the field-proven Time Domain Transmission (TDT) method of reliably measuring soil moisture, which is a refined version of the Time Domain Reflectometry (TDR) technique. TDT-based sensors do not need to be calibrated to each type of soil they will be buried in.

Our proprietary TDT5 technology further enhances TDT in five key ways:

  1. Measures with a patented antenna woven into the full length of the internal circuitry – reduces the impact of noise to achieve a high accuracy and averages measurements across the entire length of the probe 
  2. Averages 400,000 samples for each measurement – boosts accuracy to ±1% and repeatability to < 0.2%
  3. Captures measurement in less than 100ms – reduces power consumption
  4. Embeds antenna and circuitry on a single board – dramatically reduces cost to manufacture
  5. Encases entire sensor in a durable, sealed engineered resin housing – maximizes durability

The GroPoint Profile represents true innovation, with a design that allows for multiple simultaneous moisture readings at different depths with a single probe. It’s also the only probe of its kind that averages readings across each segment and does not require augured holes or installation of access tubes. Its low price point allows multiple sensors to remain permanently installed for ongoing soil profile monitoring.

The GroPoint Profile represents true innovation, with a design that allows for multiple simultaneous moisture readings at different depths with a single probe. It’s also the only probe of its kind that averages readings across each segment and does not require augured holes or installation of access tubes. Its low price point allows multiple sensors to remain permanently installed for ongoing soil profile monitoring.

GroPoint patented antenna
Antenna length (each side): 15cm
Effective length (if stretched out): 75cm

The Patented GroPoint Antenna

The antenna design is another key to producing robust sensors with such high accuracy at such a low price. Our patented design weaves the antenna through the circuit board 20 times per centimetre, and much like a coiled spring the effective length of the antenna is 5 times the physical length it consumes. A larger antenna increases the resolution of each sample, allowing more noise to be filtered out, and ultimately increasing the accuracy and the precision of measurements. GroPoint sensors based on this technology deliver scientific-grade measurement for less than the price of most competing probes.