Soil Monitoring

Over the past few decades, soil monitoring has become increasingly important. Environmental factors such as climate change, dwindling water resources, and threatened habitats are driving the need to monitor the environment and implement better policies to protect it. Many natural processes in the environment are driven by or in some ways related to soil hydrological processes. Monitoring soil moisture conditions provides important information for the protection of, and in the understanding of local and regional water resources.

Soil is an important natural resource, just as the air and water that surround us are. Unfortunately it has been overlooked in the past and taken for granted with disastrous results, such as the North American dust bowl of the 1930s. Today, the role of soil health on our climate as a whole is taken more seriously, with researchers at organizations such as the USDA-ARS (US Department of Agriculture, Agricultural Research Service) looking into how exactly soil interacts with the rest of our environment.

Receiving accurate and instantaneous information on soil moisture content, salinity, temperature, and other parameters, soil sensors are an important tool for anyone involved with soil.

Irrigation of crops represents 90% of the water used worldwide. Monitoring soil moisture in the root zone of crops will optimize irrigation. The benefits of optimizing irrigation scheduling with soil moisture sensors includes increasing crop yields, saving water, protecting local water resources from runoff, saving on energy costs, saving on fertilizer costs and increasing the farmer profitability.

Irrigation plays an increasingly important role in agriculture. Irrigation is essential but so is the proper management of the irrigation. Soil moisture monitoring is the key to ensuring good irrigation management decisions are made to maximize the benefit of irrigation.

Irrigation is not the only use for soil monitoring. Each year, erosion from changes in land use causes millions of dollars in damage to property and natural water systems. In order to understand the causes of erosion and make predictions about when and where erosion will occur, hydrologists need to record rainfall, sediment and soil moisture. 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. Monitoring soil moisture is an important input parameter into erosion prediction models.

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.

Soil monitoring is also critical to dust control, biofuel production, phytoremediation, reservoir recharge from snowpack, soil carbon sequestration studies, watershed hydrology studies, satellite groundtruthing, landslide studies, and is used in mesonets and weather station networks around the world.

 

Sensors

HydraProbe is a rugged soil sensor with patented technology that provides continual, consistent accuracy measuring the three most significant soil parameters simultaneously—moisture, salinity and temperature. The most scientifically researched soil sensor in the world.

The Stevens GroPoint Profile provides cost-effective measurement of volumetric water content over multiple depths using a single probe, eliminating the cumbersome excavation required for multiple sensors placed at different depths.

Systems

Stevens soil monitoring stations will typically use either cellular or GOES for telemetry. For cellular (CDMA/GPRS/HSPA),  eTracker is a cellular gateway which provides “virtual” cloud-based data logging, and therefore doesn’t require a physical data logger. All data is sent to the cloud for storage (with a backup stored locally) and the station can be configured remotely. For GOES, we offer the Stevens SatComm GOES transmitter which is also available with an integrated data logger.

A power source is required (battery and solar panel is typical for remote deployments) and a power regulator. SOLO is a great choice because it’s a solar charge regulator, intelligent power manager and power system sensor all-in-one (it also allows remote power cycling through eTracker).

Retrieving data is simple with Stevens-Connect, our cloud-based software that requires no infrastructure to scale to any number of stations or users. Use it to configure your station, visualize your data, analyze measurements, manage alarms, perform calculations, and set up data routing. Alternatively, you can have the data sent to any other HTTP or FTP destination or 3rd-party software like Aquarius or WISKI.

True cloud-based sensor configuration, logging, reporting and data analysis all-in-one. eTracker is the gateway between the sensors and the cloud—data communication and IT infrastructure merged under a single user interface experience.

Sensors

HydraProbe

Reliable soil insight. The most scientifically researched soil sensor in the world.

Smart Temp

SDI-12 / RS-485 temperature sensor for water or soil.

Stevens GroPoint Profile

Multi-segment soil moisture profiling probe that installs without excavating.

ecoTech Tensiomark

SDI-12 matric potential sensor.

Other sensors

Add additional SDI-12 or analog sensors as required.

Power

SOLO

Smart SDI-12 power manager that also provides remote power cycling.

JL-2

Temperature compensated, tapered solar charge controller.

Battery

Choose a 9 Ah, 17 Ah or 33 Ah battery to suit your needs.

Solar Panel

A 20W or 40W solar panel will recharge the battery and make the station autonomous.

Logging & Communications

eTracker

True cloud-based sensor configuration, logging, reporting and data analysis all-in-one.

Stevens SatComm

True cloud-based sensor configuration, logging, reporting, and data analysis all-in-one.

DLight

Data logger with 4 single-ended analog input channels.

Cell-Net

Reliable, 2-way cellular modem that’s easy to set up.

Data Retrieval & Configuration

Stevens-Connect

Stevens Connect is a cloud-based data acquisition and management system.

Soil Monitoring System Builder

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Sensors

Power

Logging & Communications

Data Retrieval & Analysis