Abstract
AbstractMineralization of the nitrogen of two urea‐formaldehyde compounds has been studied in twenty soils having initial pH values ranging from 3·9 to 7·8. The results show highly significant negative correlations between soil pH and the accumulation of inorganic nitrogen throughout the experiments. For comparison, the initial rates of decomposition of a sample of hoof were also studied in the same soils. In contrast to the urea‐formaldehyde compounds, mineralization of the nitrogen of hoof was markedly retarded in three of the most acid soils, the results for the remaining soils showing no significant relationship to soil pH.
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