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SL 209: Impact of Agricultural Land Use on Nitrate Levels in Lake Manatee, Florida

Figure 4. Deseasonalized NO3-N trends (from January 1989 to January 1993) compared with typical vegetable fertilization (indicated by downward-pointing arrows) and plastic removal dates (indicated by upward-pointing arrows) for S7 (neighboring vegetable production) and S2 (no agricultural activity).