Article Figures & Data
Figures
- Figure 1
Layout of the study site showing the six 0.2 ha experimental plots with three under conventional tillage (CT; plots 1, 3, and 5) and three under strip tillage (ST; plots 2, 4, and 6). The 0.4 ha upslope boundary plot is not shown.
- Figure 2
Annual averages of surface runoff and subsurface flow loads (kg ha−1) of (a) calcium, (b) iron, (c) potassium, (d) magnesium, (e) manganese, (f) sodium, (g) phosphorus, (h) sulfur, (i) silicon, and (j) zinc with conventional (CT) and strip tillage (ST) management. Significant differences (p ≤ 0.05) in surface runoff loads between tillage treatments are indicated by an asterisk (*).
- Figure 3
Principal component analysis of the element load data including (a) the score plot and (b) the loading plot. The first principal component (PC1) explains 60.4% of the variance and separates the element load data based on sample type (surface runoff vs. subsurface flow). The second principal component (PC2) explains 19.5% of the variance and separates the data based on years with high flow (2004 to 2005) and low flow (2006 to 2008).
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