Electronic Soil Offers New Possibilities for Soilless Cultivation and Crop Improvement

Hydroponics is a method of growing plants without soil, using water and nutrients instead. It has many advantages, such as saving space, water, and fertilizer, as well as preventing soil-borne diseases and pests.

However, hydroponics also has some challenges, such as maintaining the optimal pH, oxygen, and electrical conductivity levels in the water.

Researchers from Linköping University in Sweden have developed a novel solution to address these challenges: an electrically conductive "soil" that can mimic the natural conditions of soil and enhance the growth of hydroponic plants.

The electronic soil is made of cellulose fibers coated with carbon nanotubes, which can conduct electricity and sense various parameters in the water.

The researchers have demonstrated that the electronic soil can improve the yield and quality of lettuce, basil, and wheatgrass grown in hydroponic systems.

How does the electronic soil work?

(Photo : CHRISTOPHE ARCHAMBAULT/AFP via Getty Images)

The electronic soil can act as both a sensor and an actuator in the hydroponic system.

As a sensor, it can measure the pH, oxygen, and electrical conductivity levels in the water, as well as the temperature and humidity in the air.

As an actuator, it can adjust these parameters by applying electrical signals to the water or the air. For example, it can increase the pH by generating hydroxide ions, or decrease the oxygen by consuming it through electrolysis.

The electronic soil can also communicate with a computer or a smartphone, which can monitor and control the hydroponic system remotely.

The researchers have developed an app that can display the real-time data from the electronic soil and send commands to change the electrical signals.

.The app can also provide suggestions and feedback to the user, based on the optimal conditions for different types of plants.

Also Read: Moisture Is an Important Regulator and Sequestrant of Soil Carbon Stocks [STUDY]

What are the benefits of the electronic soil?

The electronic soil can offer several benefits for hydroponic farming, such as:

Improving the plant growth and health

The electronic soil can create a more natural and favorable environment for the plants, by mimicking the electrical signals and nutrient cycles of soil.

The researchers have found that the electronic soil can increase the biomass, height, and leaf area of the plants, as well as the content of chlorophyll, antioxidants, and essential oils.

Reducing the cost and complexity of the hydroponic system

The electronic soil can simplify the hydroponic system, by replacing the conventional sensors, pumps, valves, and controllers.

It can also reduce the need for external chemicals, such as pH buffers and oxygen generators, which can lower the cost and environmental impact of the hydroponic system.

Enhancing the user experience and convenience

The electronic soil can make the hydroponic system more user-friendly and accessible, by providing an intuitive and interactive interface.

The user can easily check the status and performance of the system, as well as adjust the settings and parameters, using the app on their device.

The user can also receive tips and alerts from the app, to ensure the optimal care and maintenance of the plants.

The electronic soil is a breakthrough for hydroponic farming, as it can overcome some of the limitations and challenges of the conventional methods.

The researchers hope that their invention can pave the way for more sustainable and efficient agriculture, as well as inspire new applications and innovations in the field of electronic plants.

Related article: Soil Loss Threatens Food Security