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CONTRIBUTION OF ORGANIC BULKING MATERIALS ON CHEMICAL QUALITY OF SEWAGE SLUDGE VERMICOMPOST

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Academic year: 2019

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Table 1 – Analyses of variance nutrient contents and chemical properties of Type of bulking material (TM), Mixing proportion (MP) and TM×MP used in the experiment.
Figure 1 – pH, EC, and percentage of organic carbon of vermicomposts in different treatments, columns showed with similar capital letters have not significantly difference at 5% level (Duncan multiple range test).
Figure 2 – Percentage of nitrogen, calcium, magnesium and concentration of iron, manganesis, copper and zinc in produced vermicomposts, columns showed with similar capital letters have not significantly difference at 5% level (Duncan multiple range test).
Figure 3 – Concentration of cobalt, lead, cadmium and nickl in vermicompost, columns showed with similar capital letters have not significantly difference at 5% level (Duncan multiple range test).

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