Fig. 1
From: Chemical speciation and fate of tripolyphosphate after application to a calcareous soil
Site picture (Left) with location of the injection line indicated by orange dashed line. Schematic/site map (Right) of Meadow Lake owned and operated Federated Coop fueling station. Dashed (black) line indicates the amendment injection line used for nutrient application. The vertical borehole (C) for measuring TPP infiltration through the soil profile is located directly adjacent to the injection line, while the horizontal boreholes (A, B, D, and E) are 3 and 6 m from the injection system. Location A corresponds to site labels 1–2, B: 3–4, C: 5–7, D: 8–9, and E: 10–11