Building Winogradsky Columns - University of Illinois ...

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dehydrate i.e. CaSO4·2H2O and other binders). Alternate: Epsom salt (magnesium sulfate i.e. MgSO4) can also be used. 1 tbs Plaster of Paris is the source of sulfur in the column. liquid fertilizer (N-P-K: 4 -12 -4) 3 tbs The liquid fertilizer is primarily a source of phosphorous. When choosing one, select the

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