This guide is for Extension personnel who may encounter questions from growers about the functioning and accuracy of soil moisture sensors (SMSs) for fruit tree production. The 4-page publication focuses on two types of handheld sensors currently used in Florida for irrigation management of citrus and other trees: the transmission line oscillator (TLO) and time-domain transmissometer (TDT). Written by Eric Herrera, Sandra M. Guzmán, and Eduart Murcia, and published by the UF/IFAS Department of Agricultural and Biological Engineering, February 2021.
Campbell Scientific. 2021. “Using a CS650 or a CS655, when should a soil-specific calibration be performed?” Accessed on January 12, 2021. https://www.campbellsci.com/faqs?v=1041
Muñoz-Carpena, R. 2004. Field Devices for Monitoring Soil Water Content. BUL343. Gainesville: University of Florida Institute of Food and Agricultural Sciences. https://edis.ifas.ufl.edu/ae266
Schumann, A., and L. Waldo. 2017. “Understanding Soil Moisture Sensor Data.” Citrus Industry Magazine 8(July): 1–15. https://citrusindustry.net/2017/07/10/understanding-soil-moisture-sensor-data/
Schumann, A., L. Waldo, D. Kadyampakeni, R. Ferrarezi, and C. Oswalt. 2018. “Using Soil Moisture Sensors for Citrus Irrigation.” Citrus Industry News. http://citrusindustry.net/2018/07/10/using-soil-moisture-sensors-for-citrus-irrigation/