Abstract:Soil extracts are used to provide a measure of plant nutrient bioavailability, but their predictive capacity is variable. In a greenhouse experiment, soil was amended with sewage sludge from textile manufacturing wastewater. We investigated the correspondence between maize (Zea mays L.) shoot uptake and concentrations in soil extractions for plant essential micronutrients concentrated in the sludge: B, Cu, Mn, and Zn. Hot water extract was used for B, whereas diethylene triamine pentaacetic acid (DTPA) extract… Show more
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