Authors: Hummel, JW Sudduth, KA Hollinger, SE

Citation: Jw. Hummel et al., Soil moisture and organic matter prediction of surface and subsurface soils using an NIR soil sensor, COMP EL AGR, 32(2), 2001, pp. 149-165

Authors: Birrell, SJ Hummel, JW

Citation: Sj. Birrell et Jw. Hummel, Real-time multi ISFET/FIA soil analysis system with automatic sample extraction, COMP EL AGR, 32(1), 2001, pp. 45-67

Authors: Birrell, SJ Hummel, JW

Citation: Sj. Birrell et Jw. Hummel, Membrane selection and ISFET configuration evaluation for soil nitrate sensing, T ASAE, 43(2), 2000, pp. 197-206

Authors: Tian, L Reid, JF Hummel, JW

Citation: L. Tian et al., Development of a precision sprayer for site-specific weed management, T ASAE, 42(4), 1999, pp. 893-900

Authors: Stombaugh, TS Benson, ER Hummel, JW

Citation: Ts. Stombaugh et al., Guidance control of agricultural vehicles at high field speeds, T ASAE, 42(2), 1999, pp. 537-544