Nutrient Availability and Changes on Chemical Attributes of a Paleudult Soil Amended with Liquid Sewage Sludge and Cropped with Surinam Grass

Figure 3

Soil micronutrient’s concentration, at two soil depth layers (0–20 and 20–40 cm), for treatments with and without sewage sludge (SS) during four years (2003 to 2006).

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