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Limited Release of Soluble Organics from Roots During the Centrifugal Extraction of Soil Solutions
Author(s) -
Zabowski D.
Publication year - 1989
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1989.03615995005300030058x
Subject(s) - extraction (chemistry) , centrifugation , chemistry , chromatography , soil water , soil science , environmental science
Radioactive isotopes were used to determine if the extraction of soil solutions via centrifugation was rupturing biological tissues and introducing cellular contents into the solution. Fungal cells labeled with 32 P and root cells labeled with 14 C were added to soil samples prior to centrifuging. No 32 P was detectable in the soil solutions, and a maximum of 1% of the 14 C in the roots was recovered in solution. A comparison of dissolved organic C extracted using low‐ and high‐speed centrifuging showed no change in soluble C at the higher centrifugal force. This suggests that cell contents are not being introduced into soil solutions during centrifuging.