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Relationship between Compost Stability and Extractable Organic Carbon

Department of Soil and Water Science, Univ. of Florida, Gainesville, FL 32611-0290

View larger version (15K): [in a new window]   Fig. 1. Relationship between compost CO2 evolution and organic carbon concentration. Water(2h)–extractable fulvic acid and NaOH(2h)–extractable fulvic acid represent samples sequentially extracted for 2 h with water and NaOH, respectively.

View larger version (13K): [in a new window]   Fig. 2. Relationship between organic carbon concentration of fulvic acid and absorbance at 420 nm. Water(2h)–extractable fulvic acid and NaOH(2h)–extractable fulvic acid represent samples sequentially extracted for 2 h with water and NaOH, respectively.