Soil moisture meter (Spectrum TDR350)
With this device it can be used to measure soil moisture content, volume water content and temperature. Its operation is based on electrical conductivity. An excellent field tool that works with two pencil batteries. At one end of its rugged metal frame are two 20 cm electrode pins, each inserted into the ground, and at the other end, the two handles with the backlit display. The length of the frame is telescopically adjustable. Data can be transferred very easily via Bluetooth or USB connection, its memory can store 50,000 measurements. It is very important to calibrate the device based on the examined soil structure, to calculate its data based on it. The tool is used by mycorrhiza and stress research groups, and in addition to soil moisture, temperature data from the rhizosphere of plants (root zone) are also required during heat and drought stress testing.