Citrus, a major horticultural crop in Florida, covers more than 748,000 acres and a large portion of this is on well-drained sandy ridge soils. A common ridge soil is Candler fine sand (Typic Quartzipsamments) which contains about 95% sand, 3% clay, and 1% organic matter. The narrow water holding capacity/cation exchange capacity and very high hydraulic conductivity of this soil pose a potential threat for groundwater contamination. One way to minimize such a problem is to manage irrigation effectively to avoid over-irrigation. Conversely, under-irrigation can lead to water stress which causes damage during critical growth stages. The purpose of this study is to determine the feasibility of using ECH2O soil moisture probes to schedule irrigation precisely. The ECH2O probe is a relatively low cost soil water probe that may help growers improve their irrigation management. These sensors need to be evaluated for the following: 1) accuracy and precision of performance under existing unique soil and climatic conditions, 2) ease of installation and maintenance, 3) durability in the soil environment, and 4) cost. We will discuss the advantages and disadvantages of these sensors to assist in the control of irrigation at predetermined soil water depletion levels.