Technical Abstract: Electrical conductivity of soil is useful information to manage agricultural systems, but tools for convenient and inexpensive measurements in the field are generally lacking. Three conductivity probes were designed to evaluate naturally occurring and man influenced total soluble electrolyte levels in soil and water. The probes were used to survey and monitor field and laboratory electrical conductivity to improve food production and soil quality. A pencil sized probe (PP) was connected to a hand held Hanna1 (DiST WP 4) conductivity meter, resulting in an economical, compact, and easy to use device. The tool provided accurate and precise results when compared to laboratory instrumentation. Soil samples ranging from 0.13 ' 2.32 dS m-1 had coefficients of variation ranging from 0.0 ' 25.3% with an average of 9.3%. Water samples ranged from 0.10 ' 10.00 dS m-1 and had coefficients of variation ranging from 0.7 ' 10.1% with an average of 3.4%.