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Figure 4: Distribution of Soil P Content in Tested Agricultural Plots in the 0–30 Cm Layer.
doi 10.7717/peerj.8396/fig-4
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Figure 5: Spatial Arrangement of Studied Agricultural Plots in the Puck Commune With Marked Soil pH and P Content in the 0–30 Cm Layer; Own Elaboration.
Figure 1: Total Organic Carbon (G/Kg) Present in the (A) 0–30 Cm, (B) 0–10 Cm, (C) 10–20 Cm, (D) 20–30 Cm Soil Layer.
Figure 4: Root Length of Maize in 0–20 Cm (A), 20–40 Cm (B) and 40–60 Cm (C) Soil Layer at Anthesis of Two Hybrid Variety Under Various Nitrogen (N) Application Rates in 2014 and 2015.
Figure 5: Root Active Absorption Area of Maize in 0–20 Cm (A), 20–40 Cm (B) and 40–60 Cm (C) Soil Layer at Anthesis of Two Hybrid Variety Under Various Nitrogen (N) Application Rates in 2014 and 2015.
Table 4: Share of Agricultural Plots With Soils in Various DPS Classes.
Figure 4: Linear Regression Plots of Indicator OTUs.
Figure 3: Soil C Stock (Mg Ha−1) Between 0–100 Cm Depth in Burned and Unburned Land Management Systems.
Figure 4: Effect of Grazing on N and P Nutrient and Stoichiometric Ratios in the Soil.
Figure 6: (A) Depth (Cm) vs. 40K Activity (Bq Cm−1) and (B) Depth (Cm) vs. 226Ra Activity (Bq Cm−1) in Average Soil Profiles From the Ambient (Open Circles) and Elevated-Co2 (Filled Circles) Plots at the Oak Ridge FACE Site.