Soil moisture assessment is a critical input to improve irrigation scheduling, water use efficiency, and sustainability in broadacre agriculture. However, there can be significant variability in soil moisture across fields and existing sensors typically only measure a single point. Multiple soil moisture sensing technologies have been demonstrated that enable spatial sensing, for example, the Geonics EM38 Mk2 which uses electromagnetic induction and the Skaha Labs P-band Polarimeter which uses P-band polarimetric radar. Both devices represent advanced tools for non-invasive soil moisture assessment, and have different sensing mechanisms and deployment methods, i.e. the EM38 is towed over a field while the polarimetric radar can be drone mounted. This research, supported by a CRDC Summer Research Scholarship, aims to evaluate and compare the performance of these sensors. The project focuses on how effectively each device detects and maps soil moisture under real-world conditions, particularly in the high-clay Vertosol soils of cotton-growing areas in the Darling Downs region and identifying the practical benefits and limitations of each sensor. The study involves field deployment, data collection, and comparative analysis of spatial resolution, depth sensitivity, accuracy, ease of use, and responsiveness to variable moisture levels. Findings from this research will support more informed decisions about soil moisture monitoring tools in Australian cotton systems.