Reports

Calcium Oxalate: Occurrence in Soils and Effect on Nutrient and Geochemical Cycles

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Science  23 Dec 1977:
Vol. 198, Issue 4323, pp. 1252-1254
DOI: 10.1126/science.198.4323.1252

Abstract

Whewellite and weddellite, calcium salts of oxalic acid, have been found in the litter layer of several different soils, indicating that oxalate is a major metabolic product of fungi in natural environments. The presence of oxalate in soil solution speeds weathering of soil minerals and increases the availability of nutrients to vegetation.