Importance of moisture control in pecans to preserve quality is discussed. The radio-frequency (RF), dual-frequency impedance measuring technique to sense moisture content in individual pecan nuts (in-shell pecans) and shelled pecan kernel halves is described. Previously developed calibration equations for impedance-sensing moisture determination in whole nuts and kernel halves are reviewed, and improved equations are presented for kernel halves. Data are presented on the performance of these equations in predicting the moisture contents of individual in-shell pecans and kernel halves from four validation lots representing different pecan cultivars. Standard errors of prediction (standard deviations of differences between predicted and vacuum-oven moisture determinations) of about 0.8% moisture content were achieved for kernel moisture determined from measurements on both individual whole pecan nuts and individual shelled kernel halves. The technique offers promise for practical use but requires further research and development.