Fig. 12. Averaged surface soil water content as a function of distance from ground-penetrating radar (GPR)–identified flow pathways. Surface soil moisture data (0.10 m) were averaged for three buffer zones (0–5, 5–10, and 10–15 m) around the GPR-identified flow pathways. The vertical dotted line of the left identifies the planting date while the vertical dotted line on the right denotes when reproductive stage begins.