Using sensors in agriculture and a study on a soil moisture

The purpose of this study is to design an economical soil moisture sensor that can be used as an alternative to soil moisture conventional sensors in the market. The calibration process of the sensor is provided by gravimetric method, which gives the most accurate results in soil moisture determination and compared with the Watermark soil moisture sensor, which is widely used in the fields. A total of 28 measurements were taken on different days in land conditions. Based on the results of these measurements, linear regression graphs were drawn and the determination coefficients between each measurement method were compared. As a result, a strong linear relationship was found between the designed soil moisture sensor and the gravimetric method, with a determination coefficient of 80,8%. The determination coefficient of the soil moisture sensor designed with the Watermark sensor was found to be 92,6% and a strong linear relationship was found between them. Both strong linear relationships detected showed that the designed moisture sensor can be used for soil moisture measurements.