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A Comparison of In Situ Methods for Measuring Net Nitrogen Mineralization Rates of Organic Soil Amendments

Soil and Water Science Department, 106 Newell Hall, University of Florida, Gainesville, FL 32611-0510

View larger version (33K): [in a new window]   Fig. 1. Soil temperatures (°C) measured 10 cm below surface during the field experiment (5 May to 1 Nov. 1999).

View larger version (21K): [in a new window]   Fig. 2. Daily rainfall accumulation (mm) during the field experiment (5 May to 1 Nov. 1999).

View larger version (28K): [in a new window]   Fig. 3. Inorganic N accumulation on standard resin traps (•) and the new soil–resin trap () from unamended control soil and soil amended with poultry manure, biosolids, or yard-waste compost. The vertical line at each data point represents standard error of the mean.