TreeSense Wiki

Your browser does not support the video tag. In the time-lapse video, we can clearly see how a lemon tree wilts due to a lack of water and then perks back up after being watered. The time-lapse is not only beautiful to watch, but also serves as part of a series of experiments. The tree is equipped with sensors. This allows us to observe the relationship between what we […]

The FDR sensor is a sensor used to determine the volumetric water content in the soil. FDR stands for Frequency Domain Reflectometry. The sensor measures the soil’s ability to store electrical charge and uses this to determine the water content. What is charge storage capacity? Capacitors are used to store electrical charge. A capacitor consists of two conductors […]

The retention curve illustrates the relationship between water content and soil water tension. This relationship is characteristic of each soil type and is influenced by various factors. One of the most important factors is the pore size distribution. This is closely related to the soil type, which is why it is common to specify typical retention curves for different soil types. The figure shows retention curves for sand, silt [...]

When we talk about soil moisture, we are referring to the water content. This indicates how much water is in the soil. The water content can be specified in two different ways. The volumetric water content is the ratio of the volume of water to the total volume of the soil sample. The gravimetric water content is the ratio of the mass of water to the mass of the dry […]