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Accumulation of amorphous silica in the Pampas

, : Accumulation of amorphous silica in the Pampas. Zeitschrift fur Pflanzenernahrung und Bodenkunde 132(1): 1-4

A virgin and a cultivated brown soil formed from aeolian sediments rich in minerals of volcanic origin with a calcareous layer at 50-60 cm were sampled at 10 depths down to 50 cm. The contribution of the vegetation to the accumulation of amorphous silica was restricted to the top 20 cm. It was estimated that about 300 years were needed for the formation of the phytolith present (1.5% SiO2).[116.284].


DOI: 10.1002/jpln.19721320102

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