TY  - CONF
AU  - Lärm, Lena
AU  - Bauer, Felix
AU  - Weihermüller, Lutz
AU  - Rödder, Jan
AU  - Vereecken, Harry
AU  - Vanderborght, Jan
AU  - van der Kruk, Jan
AU  - Schnepf, Andrea
AU  - Klotzsche, Anja
TI  - Exploring the potential of using GPR to investigate the soil-plant continuumof maize crops
M1  - FZJ-2026-00183
PY  - 2025
AB  - The soil-plant continuum plays a vital role in regulating key processes that impact plant per-formance and agricultural productivity. Understanding these processes is becoming increas-ingly important as climate change affects agricultural systems. Diverging techniques likeagrogeophysics and crop science are currently used to investigate individual components ofthe soil-plant continuum at contrasting scales. However, since these components influenceeach other, integrated methods combining methods like ground penetrating radar (GPR)with root imaging and modelling techniques are needed. First, a study examined the impactof row crops like maize on horizontal variability in GPR-derived permittivities and root vol-ume fraction. Factors like soil type, water treatment, and atmospheric conditions were foundto influence this. A statistical analysis method was developed to visualize the trend-correctedspatial permittivity deviation, allowing correlation between permittivity variability and rootvolume fractions. Second, numerical modeling showed roots had a greater impact on GPRsignals than above-ground shoots. A new approach to derive available soil water was pre-sented, demonstrating that neglecting the root phase in petrophysical mixing models over-estimates soil water content. Third, horizontal crosshole GPR-derived soil water contents werecombined with a hydrological model to estimate soil hydraulic parameters for winter wheat.This sequential hydrogeophysical inversion was first used for a one-dimensional averagedcase, then upscaled to estimate pseudo three-dimensional spatially distributed parametersfor a dual-porosity Mualem-van-Genuchten model.
T2  - 85.Jahrestagung der Deutschen Geophysikalischen Gesellschaft
CY  - 24 Feb 2025 - 27 Feb 2025, Bochum (Germany)
Y2  - 24 Feb 2025 - 27 Feb 2025
M2  - Bochum, Germany
LB  - PUB:(DE-HGF)24
UR  - https://juser.fz-juelich.de/record/1050413
ER  -