James A. Doolittle

TL;DR: Electromagnetic induction (EMI) has been used to characterize the spatial variability of soil properties since the late 1970s as mentioned in this paper, which can provide a more complete characterization of the spatial variations in soil properties than traditional sampling techniques.

TL;DR: In this paper, the utility of ground-penetrating radar (GPR) to measure tree root biomass in situ within a replicated, intensive culture forestry experiment planted with loblolly pine (Pinus taeda L.).

TL;DR: The ground penetrating radar (GPR) has been used as a pedologic tool in the United States since 1978 as discussed by the authors, and principal uses have been to estimate the variability and taxonomic composition of soils, chart the lateral extent, and estimate the depth and thickness of soil horizons and geologic layers.

TL;DR: In this paper, ground-penetrating radar (GPR) was used to map spatial and temporal variations in water-table depths and ground-water flow patterns within an unconfined aquifer located beneath an eolian landscape in northwestern Indiana.

TL;DR: In this paper, the influence of the weathered bedrock zone on plant growth was studied and it was shown that weathered granitic bedrock is an essential component of the plant water supply system and is thus an important contributor to forest soil quality.